Primary responsibilities will

TWS casque sans fil Bluetooth écouteurs écouteurs pods intra-auriculaires SC Specification: 1.  Colour: Black 2.  Material: ABS, lithium battery 3.  Shell size 8*5*3cm (Due to manual measurement, there will be an error of 1-3cm.)   Feature: 1.Open the shell and connect the wireless bluetooth headset The A1 Plus wireless headset Bluetooth is designed to automatically restore the connection with the last paired device when the phone case is opened, without having to take out two earplugs. The easiest way to restore the connection is to close/open the case. And our A1 Bluetooth headset is not divided into primary and secondary earbuds, both of which are primary earbuds. The connection of our A1 is very fast and convenient. 2.The HD stereo you want to hear There is a 6mm driver inside the wireless sports Bluetooth headset, which can deliver clear sound. Bluetooth 5.0 provides a faster and more stable wireless connection for your device. The chip can also drive voice-enabled assistant access and provide ultra-low game latency. Therefore, whether you are playing games, listening to music or enjoying podcasts, you will experience higher quality sound. This is a good gift for men. 3.IPX7 waterproof protection Both the headset wireless and portable charging boxes are sealed with IPX7 protection level to prevent heavy rain and water splashing. This resistance ensures that the earbuds and charging case can withstand strong jets for at least three minutes. IPX7 waterproof can provide anti-sweat protection for the headset, and has a rain and sweat-proof microphone. So that you can exercise in the gym or enjoy your favorite sports through sports Bluetooth headsets. 4.Random use of single earplugs Unlike other TWS Bluetooth headsets that work in master/slave mode, headsets with microphones allow each earbud to work individually. Just choose one at random and use it immediately, whether it's on the left or right. It can be an ideal choice for her birthday gift. 5.Easy touch Gently touch the earplugs to control all functions without discomfort. Playing, pausing, skipping songs, answering calls and volume control are all done by its smart touch sensor. 6.The smallest wireless headset The single earplug weighing only 4.4 grams is as light as A4 paper. No matter how long you listen to it, it can bring you a more comfortable wearing experience without burdening your ears. Choose from one of the two most suitable earplugs and insert the correct earplug into the corresponding ear. 7.The earplugs are marked with L (left ear) or R (right ear) because the angle of each earplug has been carefully designed to perfectly fit your ear shape.  After inserting the earbuds into your ears, gently rotate and rotate clockwise to ensure a fit, please adjust as needed.   Package Including: ·  Headphone*2 (bring a pair of earplugs) ·  Charging box*1 ·  Earplugs*3 pairs ·  usb charging cable*1 ·  Manual *1   Le 21-nov.-20 à 11:21:13 Paris, le vendeur a ajouté les informations suivantes: Payment Nous n'acceptons que Paypal comme moyen de paiement. L'article sera envoyé dans 24 heures suivant le paiement reçu du lundi au vendredi, et les commandes reçues le samedi et le dimanche seront affichées le lundi suivant. Shipping Nous fournissons des choix multiples pour les méthodes d'expédition et la date d'arrivée estimée, mais veuillez comprendre que nous ne pouvons pas contrôler la condition d'expédition actuelle et la date d'arrivée. Terms of Sale Si vous n'êtes pas satisfait de votre achat, contactez-nous sans hésiter. Les articles peuvent être retournés dans 30 jours en état inutilisé, nous effectuerons un échange et un remboursement une fois que nous aurons reçu l'objet. Gardez les étiquettes entières et les éléments propres sans saveur, si non nous n'accepterons pas le retour. About US Si vous avez des questions, contactez-nous par l'intermédiaire de l'onglet «Demandez-nous un vendeur» au bas de la page d'inscription. Répondre à votre satisfaction est la chose la plus imotante pour nous, nous souhaitons résoudre chaque problème pour vous. Et laissez-nous une note de  5 étoiles  si vous vous sentez heureux de notre produit et service. Specification: 1.  Colour: Black 2.  Material: ABS, lithium battery 3.  Shell size 8*5*3cm (Due to manual measurement, there will be an error of 1-3cm.)   Feature: 1.Open the shell and connect the wireless bluetooth headset The A1 Plus wireless headset Bluetooth is designed to automatically restore the connection with the last paired device when the phone case is opened, without having to take out two earplugs. The easiest way to restore the connection is to close/open the case. And our A1 Bluetooth headset is not divided into primary and secondary earbuds, both of which are primary earbuds. The connection of our A1 is very fast and convenient. 2.The HD stereo you want to hear There is a 6mm driver inside the wireless sports Bluetooth headset, which can deliver clear sound. Bluetooth 5.0 provides a faster and more stable wireless connection for your device. The chip can also drive voice-enabled assistant access and provide ultra-low game latency. Therefore, whether you are playing games, listening to music or enjoying podcasts, you will experience higher quality sound. This is a good gift for men. 3.IPX7 waterproof protection Both the headset wireless and portable charging boxes are sealed with IPX7 protection level to prevent heavy rain and water splashing. This resistance ensures that the earbuds and charging case can withstand strong jets for at least three minutes. IPX7 waterproof can provide anti-sweat protection for the headset, and has a rain and sweat-proof microphone. So that you can exercise in the gym or enjoy your favorite sports through sports Bluetooth headsets. 4.Random use of single earplugs Unlike other TWS Bluetooth headsets that work in master/slave mode, headsets with microphones allow each earbud to work individually. Just choose one at random and use it immediately, whether it's on the left or right. It can be an ideal choice for her birthday gift. 5.Easy touch Gently touch the earplugs to control all functions without discomfort. Playing, pausing, skipping songs, answering calls and volume control are all done by its smart touch sensor. 6.The smallest wireless headset The single earplug weighing only 4.4 grams is as light as A4 paper. No matter how long you listen to it, it can bring you a more comfortable wearing experience without burdening your ears. Choose from one of the two most suitable earplugs and insert the correct earplug into the corresponding ear. 7.The earplugs are marked with L (left ear) or R (right ear) because the angle of each earplug has been carefully designed to perfectly fit your ear shape.  After inserting the earbuds into your ears, gently rotate and rotate clockwise to ensure a fit, please adjust as needed.   Package Including: ·  Headphone*2 (bring a pair of earplugs) ·  Charging box*1 ·  Earplugs*3 pairs ·  usb charging cable*1 ·  Manual *1   Le 21-nov.-20 à 11:21:13 Paris, le vendeur a ajouté les informations suivantes: PAYMENT Nous n'acceptons que Paypal comme moyen de paiement. L'article sera envoyé dans 24 heures suivant le paiement reçu du lundi au vendredi, et les commandes reçues le samedi et le dimanche seront affichées le lundi suivant. SHIPPING Nous fournissons des choix multiples pour les méthodes d'expédition et la date d'arrivée estimée, mais veuillez comprendre que nous ne pouvons pas contrôler la condition d'expédition actuelle et la date d'arrivée. Terms of Sale Si vous n'êtes pas satisfait de votre achat, contactez-nous sans hésiter. Les articles peuvent être retournés dans 30 jours en état inutilisé, nous effectuerons un échange et un remboursement une fois que nous aurons reçu l'objet. Gardez les étiquettes entières et les éléments propres sans saveur, si non nous n'accepterons pas le retour. ABOUT US Si vous avez des questions, contactez-nous par l'intermédiaire de l'onglet «Demandez-nous un vendeur» au bas de la page d'inscription. Répondre à votre satisfaction est la chose la plus imotante pour nous, nous souhaitons résoudre chaque problème pour vous. Et laissez-nous une note de  5 étoiles  si vous vous sentez heureux de notre produit et service. Le 02-déc.-20 à 09:42:20 Paris, le vendeur a ajouté les informations suivantes:

Specification: 1.  Colour: Black 2.  Material: ABS, lithium battery 3.  Shell size 8*5*3cm (Due to manual measurement, there will be an error of 1-3cm.)   Feature: 1.Open the shell and connect the wireless bluetooth headset The A1 Plus wireless headset Bluetooth is designed to automatically restore the connection with the last paired device when the phone case is opened, without having to take out two earplugs. The easiest way to restore the connection is to close/open the case. And our A1 Bluetooth headset is not divided into primary and secondary earbuds, both of which are primary earbuds. The connection of our A1 is very fast and convenient. 2.The HD stereo you want to hear There is a 6mm driver inside the wireless sports Bluetooth headset, which can deliver clear sound. Bluetooth 5.0 provides a faster and more stable wireless connection for your device. The chip can also drive voice-enabled assistant access and provide ultra-low game latency. Therefore, whether you are playing games, listening to music or enjoying podcasts, you will experience higher quality sound. This is a good gift for men. 3.IPX7 waterproof protection Both the headset wireless and portable charging boxes are sealed with IPX7 protection level to prevent heavy rain and water splashing. This resistance ensures that the earbuds and charging case can withstand strong jets for at least three minutes. IPX7 waterproof can provide anti-sweat protection for the headset, and has a rain and sweat-proof microphone. So that you can exercise in the gym or enjoy your favorite sports through sports Bluetooth headsets. 4.Random use of single earplugs Unlike other TWS Bluetooth headsets that work in master/slave mode, headsets with microphones allow each earbud to work individually. Just choose one at random and use it immediately, whether it's on the left or right. It can be an ideal choice for her birthday gift. 5.Easy touch Gently touch the earplugs to control all functions without discomfort. Playing, pausing, skipping songs, answering calls and volume control are all done by its smart touch sensor. 6.The smallest wireless headset The single earplug weighing only 4.4 grams is as light as A4 paper. No matter how long you listen to it, it can bring you a more comfortable wearing experience without burdening your ears. Choose from one of the two most suitable earplugs and insert the correct earplug into the corresponding ear. 7.The earplugs are marked with L (left ear) or R (right ear) because the angle of each earplug has been carefully designed to perfectly fit your ear shape.  After inserting the earbuds into your ears, gently rotate and rotate clockwise to ensure a fit, please adjust as needed.   Package Including: ·  Headphone*2 (bring a pair of earplugs) ·  Charging box*1 ·  Earplugs*3 pairs ·  usb charging cable*1 ·  Manual *1   Le 21-nov.-20 à 11:21:13 Paris, le vendeur a ajouté les informations suivantes:

Bomaster 1900 Youtube demo link: https://www.youtube.com/watch?v=sGseuFLROKU Manufactured: 1976 - 1982 Designer: Jacob Jensen Colours: Rosewood, Teak, White, Oak The 1970's were exciting times for Bang & Olufsen. Another breakthrough during this decade was Beomaster 1900, a radio receiver and amplifier launched in 1976. Once again, design and operation differed dramatically from other contemporary products. Originally designed by Jacob Jensen, Beomaster 1900, together with Beomaster 2400-2 were two advanced FM stereo receivers. They had identical technical specification and performance. Both were easy to use and easy to live with. Beomaster 2400-2 had the additional convenience of a cordless ultrasonic remote control module by which you could operate radio, amplifier and Beogram 2400 or 4004 record deck from a distance. Both receivers had touch-sensitive controls for operating the features and functions you used every day. All the secondary switches and adjustments were protected beneath a hinged lid, but an illuminated readout panel showed you the set's operational status at a glance. Beomaster 1900 boasted a powerful 2 x 30 watts RMS amplifier with distortion of less than 0,13%, five pre-set FM stations and comprehensive connection facilities. To operate it you simply touch the application "dimples" on the set's front panel. The radio section had 4 pre-set stations which could be summoned at a touch and the phase-lock loop decoder provided excellent stereo separation even in difficult reception conditions The volume level could be pre-set at low, medium or high, and the music would always start at this level however much the volume control was altered last time the set was used. The sets' controls were divided into primary and secondary functions. The latter, which were less frequently used, were placed underneath the hinged aluminium panel where they were protected from dust and accidental movement. A clear distinction was therefore made between the primary choice - accessible through a light touch - and the secondary choice, concealed under a lid hiding what the user did not need for daily use. At a stroke, what had been the norm for hi-fi in the past, with its macho grip and buttons, was eliminated. Instead, designer Jacob Jensen created a new design language, flat 'flush-designed' and electronically communicating, which did not target a few techno-freaks, but a much wider audience who wanted music rather than hi-fi equipment. Beomaster 1900 had connections for two pairs of speakers, headphones, record player and cassette recorder. The receiver won the ID Award in 1976. Livraison Internationale (cotation sur demande) (please feel free to contact me for further details) Worlwide shipment: please contact before bidding   BIEN LIRE AVANT D’ENCHERIR; READ CAREFULLY BEFORE BIDDING   Attention pour la livraison (Be careful for the delivery)   Les objest ne sont pas exemptés des vibrations ou chocs dû au transport (item are not free from vibrations or damages due to the fret)   En cas d'objets endommagés ou problèmes quelconques,  je ne suis pas responsable et donc pas de retour.  Si vous n’êtes pas d’accord avec ces condition de vente,  ne pas enchérir … In case of damages or problem with the fret, I decline all responsabilities and no retunrs accepted. If your not agree with the terms, please don't bid or buy anything.   Tout le matériel qui vous est proposé est testé avant la mise en vente et avant la livraison pour assurer le bon fonctionnement All items are tested before the sale to ensure the perfect work of the item.   L'acheteur potentiel dispose de toute la durée de la mise en vente pour me demander toute information/précision/photo qui lui paraîtraient utiles ou nécessaires pour enchérir. The Seller can ask all the informations and pictures that he needs before bidding or buying any item, I will a

Schoeps DSP-4 KFM 360 This unit is in good cosmetic condition and turns on, but I did not test it myself. I bought it used from the exclusive Schoeps French distributor Areitec in 2017, so it should be in good working condition. Invoice is available. I never had any opportunity to use this fantastic piece of gear. Sold as is. Comes in its original Schoeps wooden box with a Schuko power cord (France), a stereo XLR cable (5 pins) and a XLR split Y cable. The DSP-4 KFM 360 is a 24-bit processor unit. Together with the sphere microphone KFM 360 and two bidirectional compact condenser microphones CCM 8L, it forms a compact 5.1 surround recording system with excellent spatial imaging capability. The processor derives the six 5.1 surround channels from only four microphone signals (the two pressure transducers in the KFM 360 plus two figure-8s) and offers a wide range of selectable settings. The primary characteristics of the DSP-4 KFM 360 are:  – analog and digital inputs and outputs  – integrated 48 Volt phantom powering and microphone preamplification  – built-in equalization for the microphones  – digital processing can be performed during or after the actual recording  – analog control “feel”  – capability to store control “presets”  – directionality of the front and rear channel microphones is independently selectable  – the stereo basis width of the front channels is independently variable  – adjustable time delay and low-pass filtering for the rear channels  – sampling rate 44.1, 48 or 96 kHz, 24 bit In addition to amplifying the microphone signals, in the “B: SURR” operating mode the DSP-4 KFM 360 provides compensation for the low-frequency response of the figure-8 microphones and appropriate diffuse-field equalization for the pressure transducers. The front-channel outputs result from summing the outputs of the pressure transducers with the outputs of the figure-8s, while the rear-channel outputs result from subtracting these signals (see drawing on next page). The resulting “virtual microphones” face frontward and backward as do the actual figure-8s. The directional patterns of the front- and rear-facing “virtual microphones” may be set independently, from omnidirectional through cardioid all the way to figure-8 (though the extreme settings are of only limited usefulness). This permits flexible adaptation to the particular acoustic conditions of the recording venue, since the choice of directional pattern affects the amount of reverberant energy that will be picked up. If the unprocessed microphone signals are recorded (four channels), the effective directional settings can be chosen retroactively during post-production playback. The center channel signal is derived from the front channels by a matrix. An additional channel contains only a low-frequency signal up to 80 Hz, which is obtained by summing the pressure transducer outputs and reducing the total level by 6 dB. To prevent the disturbing effect of rear channel localization of sound sources, the rear channel signals can be reduced in level, delayed and/or processed by an adjustable low-pass filter. In addition to these primary functions, each selector switch also has a secondary function that allows, for example, the relative front-to-back channel gain or the left/right balance to be adjusted. While recording there is also a monitoring function which permits twelve different signals to be heard through Output III, as determined by the set- ting of the REC MONITOR knob.

Schoeps DSP-4 KFM 360 This unit is in good cosmetic condition and turns on, but I did not test it myself with mikes. It is a former demo unit from the exclusive Schoeps French distributor Areitec. I bought it from them in 2017, so it should be in good working condition. Original invoice is available. I never had any opportunity to use this fantastic piece of gear. Sold as is. Comes in its original Schoeps wooden box with a Schuko power cord (France), a stereo XLR cable (5 pins) and a XLR split Y cable. The DSP-4 KFM 360 is a 24-bit processor unit. Together with the sphere microphone KFM 360 and two bidirectional compact condenser microphones CCM 8L, it forms a compact 5.1 surround recording system with excellent spatial imaging capability. The processor derives the six 5.1 surround channels from only four microphone signals (the two pressure transducers in the KFM 360 plus two figure-8s) and offers a wide range of selectable settings. The primary characteristics of the DSP-4 KFM 360 are:  – analog and digital inputs and outputs  – integrated 48 Volt phantom powering and microphone preamplification  – built-in equalization for the microphones  – digital processing can be performed during or after the actual recording  – analog control “feel”  – capability to store control “presets”  – directionality of the front and rear channel microphones is independently selectable  – the stereo basis width of the front channels is independently variable  – adjustable time delay and low-pass filtering for the rear channels  – sampling rate 44.1, 48 or 96 kHz, 24 bit In addition to amplifying the microphone signals, in the “B: SURR” operating mode the DSP-4 KFM 360 provides compensation for the low-frequency response of the figure-8 microphones and appropriate diffuse-field equalization for the pressure transducers. The front-channel outputs result from summing the outputs of the pressure transducers with the outputs of the figure-8s, while the rear-channel outputs result from subtracting these signals (see drawing on next page). The resulting “virtual microphones” face frontward and backward as do the actual figure-8s. The directional patterns of the front- and rear-facing “virtual microphones” may be set independently, from omnidirectional through cardioid all the way to figure-8 (though the extreme settings are of only limited usefulness). This permits flexible adaptation to the particular acoustic conditions of the recording venue, since the choice of directional pattern affects the amount of reverberant energy that will be picked up. If the unprocessed microphone signals are recorded (four channels), the effective directional settings can be chosen retroactively during post-production playback. The center channel signal is derived from the front channels by a matrix. An additional channel contains only a low-frequency signal up to 80 Hz, which is obtained by summing the pressure transducer outputs and reducing the total level by 6 dB. To prevent the disturbing effect of rear channel localization of sound sources, the rear channel signals can be reduced in level, delayed and/or processed by an adjustable low-pass filter. In addition to these primary functions, each selector switch also has a secondary function that allows, for example, the relative front-to-back channel gain or the left/right balance to be adjusted. While recording there is also a monitoring function which permits twelve different signals to be heard through Output III, as determined by the set- ting of the REC MONITOR knob.

Fonctionne parfaitement, très bon état général. Avec télécommande. This receiver should provide plenty of power for most home theater rooms with a total of 500 watts of power (100 watts per channel x 5 channels,).  The rear panel has spring clip connections for the primary speakers (front L&R, Center, and surround) which will accept banana plugs.  Regular spring clips are provided for the B channel speakers which will take bare wire up to around 16 gauge.  The receiver also includes a rear panel output for a powered subwoofer (not included).

Tube Amplifier Bias Board. Input 230v ac, output up to -160 vdc. Controls 4 tubes bias voltage and  current independantly. Set it once for all and bias will never move. Ideal when using a toroidal power transformer as an output one, to cancel DC current in primary. Will be shipped from France. Please ask for shipping cost depending on your location. Best regards

Rare paire Luxman C300 et M300:Amplificateur et préamplificateur (avec phono). État : "Occasion" En excellent état de fonctionnement, notez qu' il faudra remplacer une ampoule du voyant Led  "classe A". Voltage 220V. Les deux appareils sont visibles chez Jefferson Hifi à Pérouse où je les ai déposés. Livraison possible en France, en Europe,etc nous consulter pour les frais d'envoi internationaux. Le M300 a été produit en même temps que la série C300. Je crois qu’il n’en a été produit que 2000 dans le monde. C’est non seulement une paire de collection, mais le haut de gamme des luxman des années 1980. Ils sont les dernières combinaisons pré/ampli, à avoir été fabriquées sans implication de Alpine(qui a ensuite  modifié sérieusement la qualité Luxman  hélas.). ils ont été primés "produit de l'année" au début des années 80.  Le M300 se laisse utiliser soit en classe A, où il développe 2x42 w sous 8 ohms en classe A, ou alors 172w en classe AB sous 8 ohms. Comme toujours chez Luxman, on peut espérer une dizainede watts supplémentaires dans chaque modes, vu qu'ils utilisent unsystème de mesure très strict sur leurs fiches techniques. Il faut surtout savoir qu’il ne faut basculer de classe AB en classe A que à l’arrêt, en redémarrage à froid.  Voici  les caractéristiques techniques (https://audio-database.com/LUXMANALPINE-LUXMAN/amp/m-300-e.html) et https://audio-database.com/LUXMANALPINE-LUXMAN/amp/c-300-e.html 1)Préampli C300: Frequency response: 0.5Hz to 140kHz   Total harmonic distortion: 0.005% Input sensitivity: 0.09mV (MC), 2mV (MM), 140mV (line)      Signal to noise ratio: 80dB (MM), 100dB (line) Output: 140mV (line), 1V (Pre out), 20V (Pre out Max)  Dimensions: 478 x 163 x 384mm     Weight: 9kg 2)amplificateur M300 Form Duo beta plusX poweramplifier Succession effectiveoutput (20Hz - 20kHz, both channel simultaneous operation) Class-A: 40W+40W (8ohms) AB class: 270W+270W (4ohms) 170W+170W (8ohms) THD (8 ohms) 20Hz- 20kHz-3dB Class-A: 0.005% or less AB class: 0.005% or less Cross modulationdistortion (8 ohms) 60Hz: 7kHz=4:1, -3dB Class-A: 0.005% or less AB class: 0.005% or less Output bandwidth Class-A: 10Hz-100kH-3dB(0.015% of distortion) AB class: 10Hz - -100kHz three dB(0.04% of distortion) Frequency characteristic 10hz-100kHz-1dB (aClass-A and AB class) Input sensitivity Class-A: 0.45V ABclass: 1V Input impedance 50kohm (a Class-A and ABclass) SN ratio (IHF-Acorrection) Class-A: 115dB ABclass: 120dB Remains noise (IHF-Acorrection) 30 microvolts (a Class-Aand AB class) Dumping factor 120 (1kHz, 8 ohms, aClass-A, and AB class) Protection network DC drift detectionspeaker protection network Overcurrent detection amplifierprotection network Attachment Circuit operationswitchpoint (indicator) Peek indicator Inputattenuator Headset jack Speaker-off switchpoint(indicator) Line phase sensor Supply voltage AC100V, 50Hz/60Hz Power consumption (Electrical Appliance and Material Control Law) Class-A: 420W ABclass: 430W Dimensions Width 478x height 214xdepth of 484mm Weight 30kg Stereo power amplifier which adopted the Duo beta plusX circuitry. In order to control NFB of an amplifier circuitry appropriately, the Duo beta circuitry was developed and it is adopted as M-300. After this makes amplifier to the extent that it is used also from a nakedness property as it was, it adds proper-quantity NFB and DC servo as finish of a tone quality, and is suppressing the transitional distortion of a supression of play sound, TIM, etc. by superfluous NFB etc. Furthermore, in M-300, the thought of a suitable control is introduced also into a power circuit, and it is considered as the power-source Duo beta plusX. At plusX, the stability of a comfortable tone quality and an operation is reconciled because the bottom gives controlling force calmly on the assumption that a generous power-source part. M-300 can change and use a Class-A and AB class. The Class-A operation has a structure which amplifies a signal wave form as it is. Therefore, it becomes unrelated to switching distortion or crossover distortion, and does not have the cause that it is distorted in addition to an element's own linearity. In M-300, the Class-A operation excellent in adopting a Duo beta as LAPT which excelled [element] in the high region property, and an amplifier circuitry, and adopting plusX as a power circuit is realized. In AB class, Oide power which drives transitional distortion below into a limit of measurement in pursuit of a nakedness property also in an operation, and is not made in a Class-A operation on it is realized. At the time of a switching of a Class-A / AB class, in a performance, sound does not break off and a noise is not generated, either. Circuitry constituted all the amplification stages from a push-pull circuit from the input stage to the output stage, and the amplifier which was excellent in the nakedness property which will be the requisite for a Duo beta circuitry is realized. The pre-driver stage is making the input stage the transistor which was excellent in the high region property with the cascode interconnection with the stream composition of the cascode bootstrap and the differential push pull by complimentary FET of a Pch type and a Nch type. And the driver stage and the power stage are considered as the push pull stream composition by a three-step Darlington connection. A linearity makes an output element high speed power transistor linear arithmetic processor-T which was well excellent in the high region property with a triple push pull stream composition, and the electric current is sent. In this way, the static characteristics and the dynamic behavior improved. And proper-quantity NFB and DC servo are added. The power-source part had the twin monophonic stream composition of right-and-left full independence, and has acquired the merit of a linearity covering all the bands, and the outstanding crosstalk property. The power transformer is performing and using the coil mandatory adopted and put into practice among the object for Rch, and two Lch. First, the power stage and the drive stage were made into another coil, and also the primary side and secondary side has unified the orientation of a coil. This is because it is checking having influence on play sound with the potential (polarity) which a transformer begins to roll, rolls and the last each has between opposite groundings. Moreover, four right and left adopt the type only with a capacity of 12,000 micro F for an audio as a filter capacitor, and low-impedance-ization of the power-source part is attained to it. In order to cope with the rush current which becomes large as the capacity of a power-source part becomes large, the rushes current preventing circuitry is adopted. The speaker protection network and the amplifier protection network are carried. The internal organs of the speaker protection network which detects DC output in an output-terminal and separates an output are carried out. Furthermore, when the speaker code etc. short-circuits, even if there is a big input, an amplifier circuitry is protected or the electric-current preventing circuitry is carried. After the elements currently used examine, it is using it, carrying out a tone-quality mandatory strictly uniquely. The film capacitor generally called non-polar is also arranging a polarity etc., and the capacitor is carrying out the tone-quality mandatory strictly. Moreover, the precision succession good transformation Detent volume excellent in the tone quality and a feeling of an operation is adopted as input attenuator. Furthermore, in terminals, the small gilding pin jack of contact resistance was adopted as the input terminal, and the large-sized screw type is adopted as a speaker termination. The product line was packed into the shortest distance, and also it has chosen high materials of the tone-quality effect, such as a shielded cable of oxygen free high conductivity copper and 500 core. Moreover, in order to suppress an elevation of the source impedance of the pattern side of a substrate, the power bus by a copper plate was adopted and the performance of a power source is employed efficiently. The line phase sensor is carried, by the functionality which detects this polarity, the polarity of the equipment was unified and the tone quality is improved. The indicator turned on at the clipping point of an output is carried, and a peek can be supervised.

OneOdio Bluetooth Headphones used Active Noise Cancelling Headphones wireless Over Ear with 40 Play Time Hi-Fi Sound Deep Bass, Quick Charge, ANC for Travel Office TV Mobile Phone PC (Upgrade Version)  About this item     Superb noise cancellation - OneOdio upgraded Active Noise Cancelling function for this headphone, which make it more useful for suppressing outside low or middle noise, preventing your music, podcasts and audiobooks from being ruined by the outside world, especially on planes, trains and city streets - You can focus on your what matters most.     Incredible Sound Quality - Custom 40mm Large-aperture Drivers offer clear, natural, and balanced audio quality that’s decent for most music genres, a robust sound that perfectly balances clarity with just the right amount of bass.     Bluetooth V5.0 and CVC 8.0 -We use upgraded QCC3003-CSR Bluetooth 5.0 chip product by CSR. It’s primary benefits are improved speed and greater range to make sure you're getting the most stable connection. A built-in CVC 8.0 microphone guarantees hands-free calls in clear voice.     Upgraded Soft Ear Cushions - 90° Swiveling over ear pads use hi-grade memory foam cushion for the ultimate in comfort and long life. When you’re ready to give them a rest simply fold them in the travel case, which due to the portable design.     A built-in 750mAh battery and Fast Charge - Outstanding 40-hour battery life will last you multiple long days of audio playback. Up to 40-hours of playtime in Bluetooth ANC mode. Only take 5 minutes to rapidly charge and get 2 hours of playback. The noise cancellation function can work well both in wire and wireless mode.