Video Asylum

Posted by monk (A) on November 09, 2005 at 01:26:58

In Reply to: using a seperate preamp for some sources on Denon AVR-5700? posted by Victorymoto on November 5, 2005 at 21:57:21:

My question is if I wanted to use a seperate preamplifier for some audio scources (I have an audio research SP-16) with the amp section for the front left and right speakers, is this possible?

Yes, you can do this, but you may need a different stereo preamp. Hook the Denon up driving all speakers except the front L and R. Take the preamp outputs for the front L and R and plug them into the processor loop input on a compatible stereo preamp or integrated.

When you use the Denon, your stereo preamp will allow the Denon to have direct access to *its* amp.

What makes all this work is having the processor loop feature on the stereo preamp/integrated. When something is pluged into the processor loop input, the pre takes no control on the signal ; were you to spin the volume on the stereo preamp it would have no effect, all control on that signal is from the Denon.

Many machines have this feature, a few off the top of my head are the Sonic Frontiers Line 1, 2 and 3 , Adcom GFP-750 preamps, the Krell integrateds and likely many more.

As long as the home-theatre receiver has pre-outs for the front L and R chanels, any one will work (and I don't know specifically, but I have to believe the Denon has such outputs?)

So you can do what you want, but you might have to change stereo preamp to one with a processor-through put feature.