• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

Looking for info: Sony TA-V7 (part of SYSCON 353CD system)

faust3d

faust3d

New Member
I needed a small amp to drive my transformer boxes of my electret / electrostatic headphones.:music: I was looking for a small, preferably class A, MOSFET amp but instead somehow stumbled onto Sony TA-V7 in all it's 80's glory.

ta-v7.JPG


Specs and info that I found:
2x80W (20-20.000Hz/0,05THD/6Ohm)
Frequency response: 10-30.000Hz
Damping factor: 50 (6Ohm/1kHz)
Distortion: <0,05%
S/N ratio: 80dB, 75dB (Phono)
Tone controls: ±10dB@50Hz, ±10dB@10kHz
Filter: -6dB/Oct below 15Hz, -6dB above 9kHz
Muting: -20dB
Power supply: P.P.S.
Transistor devices type: Hi-fT
Click to expand...

It was cheap so I pulled a trigger. I found some info on VK but could not find any other info in the web about it except that it was 70-80K yen when it sold in 1984.

Does anyone have info about this amp? I want to mentally prepare for when it comes :huge:
 
Register to hide this ad
Hi wualta

Heh. Well as soon as I get it I will post here for future generations to know if it's junk or treasure. :banana:
 
So I got the amp and although it's somewhat beat up it works and sounds OK. Not done testing it yet. Here some pics of the insides of the amp:

Pic1 Pic2 Pic3

And this is my use for it; driving my TK33 headphones:

Sony%20TA-V7_TK33s.jpg
 
So after some listening with headphones through headphone jack, tret headphones through speakers outs via adapter box, and my little desktop speaks I came to the conclusion that this amp sounds a bit dry, accurate, with nice dynamic range and plenty of speed and details. It is in no way hi-end, but the sound is well balanced and adequate for my needs. :thmbsp:

Amp is working like a champ after being shipped in a flimsy thin walled box from across the country and probably abused for 25 years. Looks like Sony made some nice stuff even in the 80's and even for lower end lineups, sweet. :music:
 
"Dry" is a good descriptive adjective for the sound of a lot of older gear (AKers please note that most of my stuff is "vintage", but TOTL if I can get it), that feeling that though everything is present, all the lube's gone, and I'm not talking about euphonic coloration. Easier to understand after you've heard it.

Anyway, part of the Grand Cheapskate Quest is to get good usable stuff for a close-to-yardsale price. My Yamaha R100 receiver is an example of this, and F3D's Sony certainly qualifies. Plus it's got a technically interesting early attempt at a switching power supply, something that's common nowadays but was far out back then.

Which is something that might be said for his headphones. I wonder where he got them....
 
Last edited:
You must log in or register to reply here.
Back
Top Bottom