12V battery tube head amp....... for $ 19000 ??

aragon63 · « **on:** 6 Jan 2013, 02:11 am »

It has to be a typo ...... or is this guy for real ? ( yeah, you'll get free shipping )

http://www.ebay.com/itm/12V-Battery-Tube-Headphones-Amplifier-Possibly-the-best-amplifier-in-the-world-/330852970827?pt=US_Pro_Audio_Amplifiers&hash=item4d085fb14b

dB Cooper · « **Reply #1 on:** 6 Jan 2013, 02:50 am »

I call bullshit

saisunil · « **Reply #2 on:** 6 Jan 2013, 03:28 am »

batteries not included ... like with some toys

Chromisdesigns · « **Reply #3 on:** 6 Jan 2013, 03:38 am »

Was this originally posted on April 1?

Seriously, how is that even possible (forget the price)?

ecramer · « **Reply #4 on:** 6 Jan 2013, 03:51 am »

that's to much. I dont think theres anyway that could ever work

navi · « **Reply #5 on:** 6 Jan 2013, 05:41 pm »

how much would the volume control cost ? i'm almost afraid to ask!

milford3 · « **Reply #6 on:** 6 Jan 2013, 06:42 pm »

I ordered two. The second unit will be for spare parts.

Atlplasma · « **Reply #7 on:** 6 Jan 2013, 06:54 pm »

Q&A from the listing.

why this big price? it's only 2 tubes and a box... Jan-04-13
A: Thank you for your question. It is because it is the possibly the first amplifier on earth with no other usual components that reduce, degrade and color the sound quality of your source. This makes the amplifier go from 0Hz to extremely high frequencies, >>MHz. It also makes an amazing sound quality. You can make an offer if you wish and if it is reasonable you can have one. Or you can buy a kit and build one yourself. Or you can just buy the schematic and build one yourself. You need to have high impedance headphones. Kindest regards, Aetoulis

dB Cooper · « **Reply #8 on:** 7 Jan 2013, 03:05 pm »

C'mon. It's fake. I have never seen a tube amp circuit of any type that consisted only of two tubes and a power supply. No output tranny and neither the listing nor the Q&A mentions it being OTL. Maybe someone with some EE knowledge can tell for sure. What is the blob in the lower right? Either a volume control or headphone jack, one or the other seems to be missing. You can almost read the tube type and see well enough to deduce the schematic- assuming it even is a circuit.

JohnR · « **Reply #9 on:** 7 Jan 2013, 04:13 pm »

It must be a joke, I'm guessing the inputs are wired straight to the outs.

dB Cooper · « **Reply #10 on:** 23 Jan 2013, 11:24 pm »

Damn, I shoulda bought in at 19K... It's up to 90K now. Word of its fantastic quality must be getting around.

http://www.ebay.com/itm/12V-Battery-Tube-Headphones-Amplifier-For-Sennheiser-HD-580-600-650-Beyer-DT880-/330855211430?pt=US_Pro_Audio_Amplifiers&hash=item4d0881e1a6

I notice the handling time is listed as 'greater than 31 days', probably to give him time to disappear in South America.

I think some guy is willing to pay the cost of an ebay listing to make fun of audiophiles. Don't they have a policy against fraudulent listings?

saisunil · « **Reply #11 on:** 24 Jan 2013, 12:04 am »

Well there is some value to be had ... it has free shipping after all

steve in jersey · « **Reply #12 on:** 26 Jan 2013, 08:19 pm »

Quote from: dB Cooper on 23 Jan 2013, 11:24 pm

Damn, I shoulda bought in at 19K... It's up to 90K now. Word of its fantastic quality must be getting around.

http://www.ebay.com/itm/12V-Battery-Tube-Headphones-Amplifier-For-Sennheiser-HD-580-600-650-Beyer-DT880-/330855211430?pt=US_Pro_Audio_Amplifiers&hash=item4d0881e1a6

I notice the handling time is listed as 'greater than 31 days', probably to give him time to disappear in South America.

I think some guy is willing to pay the cost of an ebay listing to make fun of audiophiles. Don't they have a policy against fraudulent listings?

Alright,I just have to ask .... What "serious Audiophile" would spend that kind of "serious money" on a "seriously unknown" piece of "equipment" ?

If his intention was to spend money to "poke fun" at a group of people that he has some strange perception of he gets my vote for wacko of the decade (The monetary value of this award is far short of the 90k he's seeking it is only worth $25 & 42 cents) (You've heard of the Nobel Awards... This is'nt one of them...yet)

Noseyears · « **Reply #13 on:** 27 Jan 2013, 02:35 am »

No resistors, no caps, no volume pots

I bet it sounds "Transparent" ?

j123my · « **Reply #14 on:** 19 Feb 2013, 10:28 pm »

will it even make any sound? =p

Vlad · « **Reply #15 on:** 20 Feb 2013, 08:53 pm »

I think it might even work - there are low-voltage tubes available: 12V for both heater and anode.
It is either anode or cathode follower topology, but it doesn't make it 'first in the world' and the signal quality might be questionable. There is no other specs except bandwidth - what about THD, frequency response, stability, EMI?
Great kit for DIY learning electronics (or is it accounting?). Cost of goods - $10 max (two tubes, wires, some aluminum pieces and connectors). The rest of the price - his 'genius' or assembly?
Yet another reason not to trust ebay - this guy has 100% positive feedback!

Vlad

cheap-Jack · « **Reply #16 on:** 20 Feb 2013, 09:10 pm »

HI.

Quote from: Chromisdesigns on 6 Jan 2013, 03:38 am

Was this originally posted on April 1?

Seriously, how is that even possible (forget the price)?

Seriously it is NOT impossible to build one provided we can find Hi gain tubes operable at 12V plate voltage.

It is to drive Sennheiser 300R type Hi-Z headpnes. I already know the schematic to build one similar Hi-Z headphone amps with OTL topology using standard HV hi-gain tubes. No big deal for much.....less money.

The key issue is to find such hi-gain 12V low-voltage tubes. Maybe we can locate such tubes from some
military outlets.

If I could find such tubes, I can esily build one for your guys for say, USD10,000, making tons of money.

Anyone interested?

c-J

medium jim · « **Reply #17 on:** 20 Feb 2013, 09:11 pm »

Will we have a Fanboy on this one

Jim

cheap-Jack · « **Reply #18 on:** 20 Feb 2013, 09:34 pm »

Hi.

Quote from: medium jim on 20 Feb 2013, 09:11 pm

Will we have a Fanboy on this one

Jim

NO fancy Star War fantasy, my friend. It's for real.

It can be built NO sweats once I am paid enough to have it going!

c-J

medium jim · « **Reply #19 on:** 20 Feb 2013, 09:43 pm »

Quote from: cheap-Jack on 20 Feb 2013, 09:34 pm

Hi.
NO fancy Star War fantasy, my friend. It's for real.

It can be built NO sweats once I am paid enough to have it going!

c-J

Oh if it were real, there would be a Fanboy...

Jim