Bidding has ended on this item. The seller has relisted this item or one like this.

Posts to:
Americas, Europe, Asia, Australia  |  See exclusions
Posts to:
Americas, Europe, Asia, Australia  |  See exclusions

Details about  Battery Tube Only Headphones Amplifier For Sennheiser HD 580 600 650 Beyer DT880

See original listing
Battery Tube Only Headphones Amplifier For Sennheiser HD 580 600 650 Beyer DT880
Item Ended
Item condition:
Brand New
24 Aug, 2013 19:11:40 AEST
Starting bid:
US $47,000.00
Approximately AU $66,327.97(including postage)
0 bids ]
FREE Standard Postage | See details
Item location:
Athens, Greece, Greece


eBay item number:
Seller assumes all responsibility for this listing.

Item specifics

Brand New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ... Read moreabout the condition
Type: Headphone Amplifier
Number of Channels: 2 Brand: Pleides
Country of Manufacture: Greece Model: Electra

Pleiades Electra, possibly the most transparent amplifier on earth. No other components except 2 tubes for both stereo chanels. For the schematic Only please visit my other items.

An electron tube on its own has a flat frequency response from 0Hz to many MHz. Surrounding components restrict this and limit the magic of music in other ways too. This is possibly the first amplifier on earth using electron tubes and only.

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. Volume control may be added if you request.

Item may not look exactly the same, reserving the right to make revision changes. Handling time aproximately 30 days. This amplifier is only suitable for high impedance stereo headphones like the Sennheiser HD-580, Beyer DT880 or equivalent..



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, 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 shure you attenuate your source signal adequately before sending to this headphone amplifier.




Questions and answers about this item

No questions or answers have been posted about this item.


Place bid

Time left:
Current bid:
(Approximately ##1##)
Import charges:
Your max bid:
Your max bid:
By clicking Confirm bid, you commit to buy this item from the seller if you're the winning bidder.
By clicking Confirm bid, you are committing to buy this item from the seller if you are the winning bidder and have read and agreed to the Global Shipping Program terms and conditions - opens in a new window or tab. Import charges previously quoted are subject to change if you increase you maximum bid amount.
Resume bidding, if the page does not update immediately.
Place bid
Review and confirm your bid
Bid confirmation
FREE postage
See item description
(Approximately ##1##)
(Enter ##1## or more)
(Enter more than ##1##)
Your max bid:
Increase max bid
Place bid
Confirm bid
Increase max bid
Change bid
, you've been outbid. Don't let it get away - bid again!
, you're the highest bidder on this item. Good luck
, you're the first bidder. Hope you win!
, you're currently the high bidder, but you're close to getting outbid.
, this auction is almost over and you're currently the high bidder.
, you're the high bidder, but the reserve price hasn't been met.
Please enter your bid again.
Please enter a valid number as the bid price.
Enter an amount that is equal or greater than the minimum bid required. This can be found under the bid entry box.
Maximum bids can't be lowered once they're submitted.
This seller requires the buyer to have a PayPal account to purchase this item. Get a PayPal account here .
Your bid is greater than or equal to the Buy It Now price. We recommend you purchase this item via Buy It Now. If you still wish to bid, you may do so below.
Time left:
Current bid:
(approximately ##1##)
Your maximum bid:
(approximately ##1##)
Increase your maximum bid:
By clicking 1 Click Bid, you commit to buy this item from the seller if you're the winning bidder. Learn moreabout 1-click bid - opens in a new window or tab
(approximately ##1##)
Winning bid:
Starting bid:
Congratulations! The auction has ended and you're the winner.
The auction has ended, but the reserve price was not met.
Sorry, the auction has ended and you were outbid.
Good news, you're the high bidder.
Sorry, you've been outbid.
You're the high bidder, but the reserve price is not met.
Please enter a higher amount than the current bid.
Maximum bids can't be lowered once submitted.
Please enter a valid number.