80's Technics Integrated Amps
- Thread starter GreenV
- Start date
ReverendFunk
Active Member
I haven't seen those two on any of my early SU-Vs, but the SU-V707 has a little "Computer Drive Monitor" with several LEDs next to the New Class A logo. I would guess they're similar to that.
Model is SU-v650
First led is yellow and labeled 'voltage control'
Second is red and labeled 'current drive'
Second Led is active when it connect speakers and have some kind of diagnostic messages, but first is a puzzle to me. Sometimes it lit and sometimes not, with no noticeable impact on anything... I guess that it have something to do with current operation mode of so called AA Class.
ReverendFunk
Active Member
It's a short-circuit protection circuit.
But it will not work if in short circuit, and it is working no matter this yellow led lit or not....
ReverendFunk
Active Member
If the protection is engaged (i.e., the amp shuts down for whatever reason), the red LED won't be lit.
Like i seed everything is working no matter state of the led.
Daunia 70
Lunatic Member
The SU-V90 was one of the most expensive Technics amps due to it's built in DAC.I have a couple of these,they're truly excellent.I've found to get the very best sound from CD,you need to connect some good quality interconnects to the power amp direct analogue inputs at the rear,and not use the normal CD input or optical input (but you cannot record of CD connecting this way).
Thanks for your input ryuuoh. It does have
a robust sound to it, if that's an accurate
description....
The SU-V90 was one of the most expensive Technics amps due to it's built in DAC.I have a couple of these,they're truly excellent.I've found to get the very best sound from CD,you need to connect some good quality interconnects to the power amp direct analogue inputs at the rear,and not use the normal CD input or optical input (but you cannot record of CD connecting this way).
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Duania thank you for for your comments and information.
Unfortunately, D'uh, I've mistakenly described it as
the SU-V90, when it is really a SU-V91.
Is it different enough to change your assessment of
this amp.
It and the SU-V96 both sound great to my old ears.
Any information on the SU-V91 and/or the SU-V96 is
very welcome.
Thanks to all in advance.
ReverendFunk
Active Member
Dave, I have an SU-V76 that is almost identical to the 96. It's a good amp, but it weighs quite a bit less than what a 100 WPC New Class A amp of earlier vintage would have weighed, if they made one. The 70 WPC SU-V7 is massive compared to the 76. The 76 is also noticeably less clear than the earlier models. It's a very good find in a thrift store amp, and if you like its sound, you will be blown away by a the silver-faced SU-V3 (30 WPC) or SU-V7.
