Quote Originally Posted by mister_e View Post
well yes and no, but yeah they're good for most case.

VCA such as SSM2164 produce better results.. well for much sensitive ears...
Hmm, it has higher THD and is controlled by analog voltage. So a DAC is really needed. More noise source and more difficult PCB. I can assure you Steve, it is a HI-FI device. I am high fidelist myself too.

Quote Originally Posted by Melanie View Post
Actually this got me thinking... about the earliest known occurance of Remote-Control of a Hi-Fi (or Lo-Fi)... - and I've managed 1957/58... That's FIFTY YEARS AGO!!!! All done with steam, mirrors and bits of string (wire!).

http://www.radiopagajiba.latbs.lv/RRR/festival.htm
Very nice indeed! This is what can be called art!

Quote Originally Posted by T.Jackson View Post
They're very good figures for thd (total harmonic distortion) Willing to bet that PCB layout would play a key role in obtaining them though.
Yes, but I suppose that is a dominant rule in almost all electronics designs though. Good ground, capacitors on power lines, and seperatew analog and digital voltage sources to name a few. The vero board I can guess will not give optimum results in this case. It is not a LED test circuit...

Ioannis