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Battery Tube Only Headphones Amplifier for Sennheiser HD 580 600 650 Beyer DT880
Estimated price for orientation: 47 000 $
Category: Amplifiers
Class:
Description Condition: New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. See all condition definitions- opens in a new window or tab ... Read moreabout the condition Type: Headphone Amplifier Model: Electra Brand: Pleiades Number of Channels: 2
The Pleiades Electra is possibly the most transparent amplifier on earth. Contains no other components except 2 EF98 tubes for both (stereo) channels. The tubes are in cathode follower configuration and the headphones themselves are the cathode resistors. For the schematic Only please visit my other items or the euroelectron blogspot. An electron tube on its own has a flat frequency response from 0Hz to many MHz. The surrounding components restrict this and limit the magic of music in other ways too. This is possibly the first amplifier on earth using 2 electron tubes and no other component.
Since the signal passes through an electron tube and nothing else, the amplifier is possibly the closest there is to a wire with power gain. Gain being fixed it must be connected to a passive preamplifier or a source that has variable output. A volume control may be added upon your request. Reserving the right to make revision changes. Handling time is approximately 30 days. This amplifier is only suitable for high impedance stereo headphones such as the Sennheiser HD-580, Beyer DT880 or equivalent.. Specifications: ---Bandwidth <<0.000001Hz to >>MHz (DC to RF) ---12V extremely low noise battery operation ---Power consumption < 7W ---Input impedance >>MOhm ---No resistors, potentiometers ---No capacitors---No transformers or inductors ---No solid state, diodes, transistors, FETs, ICs ---The signal is amplified by only 2 electron tubes in class A. ---Only suitable for headphones with impedance 150-600 Ohms Caution: Headphones can damage hearing at high levels. Please make sure you attenuate your source signal adequately before sending to this headphone amplifier. Feedback on Pleiades Electra from eBay buyers: ___I wanted to tell you that I enjoy your world class lamps headphone preamplifier.Thanks for your quality I have been through e-bay a akg k240 (600 ohm) ordered and let you know what the result is likewise the k340 electrostatic dynamic headphone akg's (400 ohm) I'm going to test it on your world best préamplifier.I spread the word to other music lovers what kind of quality you can supply. Heartfelt greetings ___very nice little amp- you should try it! Thanks a lot ___Interesting item, looking forward to building one. Nice helpful seller. Thanks! ___I paid for the knowledge. It is a good concept. And advertising was fun! Apr 02, 2014
Description
| Condition: | New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. See all condition definitions- opens in a new window or tab ... Read moreabout the condition | Type: | Headphone Amplifier |
| Model: | Electra | Brand: | Pleiades |
| Number of Channels: | 2 |
The Pleiades Electra is possibly the most transparent amplifier on earth. Contains no other components except 2 EF98 tubes for both (stereo) channels. The tubes are in cathode follower configuration and the headphones themselves are the cathode resistors. For the schematic Only please visit my other items or the euroelectron blogspot. An electron tube on its own has a flat frequency response from 0Hz to many MHz. The surrounding components restrict this and limit the magic of music in other ways too. This is possibly the first amplifier on earth using 2 electron tubes and no other component.
Since the signal passes through an electron tube and nothing else, the amplifier is possibly the closest there is to a wire with power gain. Gain being fixed it must be connected to a passive preamplifier or a source that has variable output. A volume control may be added upon your request. Reserving the right to make revision changes. Handling time is approximately 30 days. This amplifier is only suitable for high impedance stereo headphones such as the Sennheiser HD-580, Beyer DT880 or equivalent.. Specifications: ---Bandwidth <<0.000001Hz to >>MHz (DC to RF) ---12V extremely low noise battery operation ---Power consumption < 7W ---Input impedance >>MOhm ---No resistors, potentiometers ---No capacitors---No transformers or inductors ---No solid state, diodes, transistors, FETs, ICs ---The signal is amplified by only 2 electron tubes in class A. ---Only suitable for headphones with impedance 150-600 Ohms Caution: Headphones can damage hearing at high levels. Please make sure you attenuate your source signal adequately before sending to this headphone amplifier. Feedback on Pleiades Electra from eBay buyers: ___I wanted to tell you that I enjoy your world class lamps headphone preamplifier.Thanks for your quality I have been through e-bay a akg k240 (600 ohm) ordered and let you know what the result is likewise the k340 electrostatic dynamic headphone akg's (400 ohm) I'm going to test it on your world best préamplifier.I spread the word to other music lovers what kind of quality you can supply. Heartfelt greetings ___very nice little amp- you should try it! Thanks a lot ___Interesting item, looking forward to building one. Nice helpful seller. Thanks! ___I paid for the knowledge. It is a good concept. And advertising was fun! Apr 02, 2014
Since the signal passes through an electron tube and nothing else, the amplifier is possibly the closest there is to a wire with power gain. Gain being fixed it must be connected to a passive preamplifier or a source that has variable output. A volume control may be added upon your request. Reserving the right to make revision changes. Handling time is approximately 30 days. This amplifier is only suitable for high impedance stereo headphones such as the Sennheiser HD-580, Beyer DT880 or equivalent.. Specifications: ---Bandwidth <<0.000001Hz to >>MHz (DC to RF) ---12V extremely low noise battery operation ---Power consumption < 7W ---Input impedance >>MOhm ---No resistors, potentiometers ---No capacitors---No transformers or inductors ---No solid state, diodes, transistors, FETs, ICs ---The signal is amplified by only 2 electron tubes in class A. ---Only suitable for headphones with impedance 150-600 Ohms Caution: Headphones can damage hearing at high levels. Please make sure you attenuate your source signal adequately before sending to this headphone amplifier. Feedback on Pleiades Electra from eBay buyers: ___I wanted to tell you that I enjoy your world class lamps headphone preamplifier.Thanks for your quality I have been through e-bay a akg k240 (600 ohm) ordered and let you know what the result is likewise the k340 electrostatic dynamic headphone akg's (400 ohm) I'm going to test it on your world best préamplifier.I spread the word to other music lovers what kind of quality you can supply. Heartfelt greetings ___very nice little amp- you should try it! Thanks a lot ___Interesting item, looking forward to building one. Nice helpful seller. Thanks! ___I paid for the knowledge. It is a good concept. And advertising was fun! Apr 02, 2014