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How to connect two amps with one source?

I want to connect my modded Ack dac (with one set of RCA outputs) to my tubed headphone amp (Singlepower Supra) and power amp (AVA FetValve Ultra 550).

What is a way of doing this that will have the least effect on the sound? Do I need to use a line router or switch box, or will an inexpensive y-splitter work at the output of the RCA terminals?
kevin_mcdonough
kr4's avatar
kr4
3,424 posts
 
Well, if the units are well-designed, a pair of Y-connectors will be fine. This means that the dac has a low output impedance and decent current output and that the two loads each have a relatively high, constant and similar input impedance. I do not know any those devices, so I cannot advise further.

A switch, of course, will do fine, too.

Kal
stanwal's avatar
stanwal
3,147 posts
 
I would not use a cheap one. In the past when I was a dealer for them I had Audio Quest and XLO make up ones for me. You can try Signal Cable and Morrow and others to see if they would make them. The chain is no better than it's worst cable so if I had good ones elsewhere I wouldn't use a cheap on at the beginning of the chain.
mrtennis
3,295 posts
 
i suggest a simple mod to the dac, which will create a second pair of analog out females.

i have often thought that digital designers furnish dacs and/or cd players with 2 sets of analog out connectors.

tsuch an approach would solve your problem.
kr4's avatar
kr4
3,424 posts
 
Mrtennis
i suggest a simple mod to the dac, which will create a second pair of analog out females.

i have often thought that digital designers furnish dacs and/or cd players with 2 sets of analog out connectors.

You mean an internal Y-connection. Why not?

Kal
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