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TTVJ FET-A Desktop Headphone Amp - Page 2

post #16 of 31
1/14/09 at 6:57pm
Thread Starter 
Hi,

The amp is a little behind schedule but it is moving forward now. I am currently in the middle of production on 10 units. They should be done soon - like in a few days. The ONLY part I am waiting for is the front and rear panels but they are due to arrive in a week or so.

Look for the first ones to start shipping in 10 days.

Todd
TTVJ – Home of High End Audio Home featuring TTVJ and Apex High Fi Audio products! Providing great products, service, and pricing to our customers
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post #17 of 31
1/14/09 at 6:59pm
Intriguing. Will be looking forward to the final specs and photos of the final product.
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post #18 of 31
2/8/09 at 1:06am
Todd,

Can you provide the dimensions (H x W x D) and the weight of the JFET-A? Also, does it come with a warranty?

Thanks,
minimus
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post #19 of 31
2/13/09 at 8:11am
Quote:
Originally Posted by minimus View Post
Todd,

Can you provide the dimensions (H x W x D) and the weight of the JFET-A? Also, does it come with a warranty?

Thanks,
minimus
In the first post it says three years.

Anyone care to chime in for an english explaination of a FET amp?
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post #20 of 31
2/13/09 at 12:42pm
guys - what PSU would you use for 240V in the UK???
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post #21 of 31
2/13/09 at 12:54pm
Quote:
Originally Posted by Brighten View Post
In the first post it says three years.

Anyone care to chime in for an english explaination of a FET amp?
FET = field effect transistor and is a pretty generic term.
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post #22 of 31
2/13/09 at 1:06pm
Quote:
Originally Posted by Brighten View Post
In the first post it says three years.

Anyone care to chime in for an english explaination of a FET amp?
You can check it out on TTVJ.com, but here is the basic info from the product listing:

"The TTVJ Fet-A headphone amp is a slightly different take on the general-purpose desktop headphone amp. Instead of using opamps, it's circuitry consists of entirely single-ended, class-A discrete transistor circuitry. Precision, low-noise JFET transistors are used for voltage amplification, and power MOS transistors are used for the output stage. Bipolar transistors are used for biasing.

Since JFET transistors make very linear amplifiers, no overall feedback is used in the design - only local feedback around one stage to stabilize the gain. The result is excellent overload characteristics and unmeasurable high-order distortion products.

The single-ended power MOS output stage is DC-coupled to the headphones, providing low output impedance and a very flat frequency response. It is capable of driving any headphones, and can deliver up to 9V RMS into 100 ohms.

The result is a combination of the best characteristics of tube and solid-state circuits: very low noise, low distortion, wide frequency response, and low output impedance, along with the excellent overload response and, of course, excellent sound."
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post #23 of 31
2/13/09 at 2:17pm
Thread Starter 
Hi All,

We have a 3 year warranty on the amp .

It measures 8"x5"x2". The length includes the RCA's and volume pot in the measurement.

The power supply is an ELPAC WM071-1950. It has a +/-15 volt output with .24 amps. I would guess that there is an equivalent 240v supply made. I wil look into that ans try to provide one for customers outside the USA.

Todd
TTVJ – Home of High End Audio Home featuring TTVJ and Apex High Fi Audio products! Providing great products, service, and pricing to our customers
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post #24 of 31
2/24/09 at 7:20am
If the D7000s don't ship from J&R soon, maybe I'll take a look into this depending on how the impressions go.
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post #25 of 31
3/15/09 at 12:31am
I got to hear the FET amp for a while this afternoon at the Champaign meet in IL. It is a very nice sounding amp, and very small. Powered everything I tried very well, though it was a little bright for my taste with the Grados and Denons that I tried it with. The senns were fantastic though. The FET drove them with a lot of authority and there was no veil to speak of.
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post #26 of 31
4/3/09 at 3:54am
Quote:
Originally Posted by Todd View Post
HI All,

We are now taking pre orders for our new desktop headphone amp - the TTVJ FET-A Headphone Amp. It will sell initially for $649 and be available in 4-6 weeks. It is on our website or you can call to order.

The TTVJ FET-A has both a mini and a 1/4" ouptut jack. It will take 2 inputs and has a line out too! The input switch is on the front panel to allow for ease in changing inputs. AND it sounds great!

It was designed by Pete Millett and we will back it with a 30 day money back guarantee and a 3 year warranty.

Todd
Looks to be a nice piece of electronics. How would you compare your amp, with Headrooms desktop amp. In its basic configuration, I believe the price is right around $699.99?
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post #27 of 31
4/20/09 at 10:55pm
I posted my review in the amp forum with the link below:

http://www.head-fi.org/forums/5623842-post1.html
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post #28 of 31
4/29/09 at 10:54am
is the picture that is floating around correct, power switch up for off and down for on?
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post #29 of 31
4/29/09 at 2:03pm
Thread Starter 
Hi,

Yes the switch is off up and on down. We found it sounded better that way

Todd
TTVJ – Home of High End Audio Home featuring TTVJ and Apex High Fi Audio products! Providing great products, service, and pricing to our customers
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post #30 of 31
4/29/09 at 6:41pm
Quote:
Originally Posted by Todd View Post
Hi,

Yes the switch is off up and on down. We found it sounded better that way

Todd
Priceless. And the dial goes to eleven as well I presume?
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