[pushpulltriode]

Hello!
My friend and I are interested in the DVA Digital Preamplifier. As it has one set of RCA output and one set of XLR output. Anyone able to tell me whehter they both share the same output voltage and output impedance?

We need this piece of information as both of us are bi-amping.

If both are not having the same output voltage. Would I use the ARX De Balancer to achieve 2 pairs of RCA outputs?

https://www.arx.com.au/worldwide/audibox-debalancer.htm

Thanks!

[Rusty Jefferson]

This was recently covered somewhat in this thread beginning at post #20:
https://www.audiocircle.com/index.php?topic=190241.0

There are gain differences between the outputs and I don't believe they would recommend converting the balanced output to single ended and running a bi-amp system "for best sound quality" though it may be able to do it. Someone from AVA will probably see this and comment but if not reach out to them directly.

[pushpulltriode]

I assume the XLR output of DVA Digital Preamp is double the output voltage of its RCA output, my amplifier 's input sensitivity can be adjustable between 28dB and 38dB.

Since my system must be bi-amping, can I have one amp connected via RCA for the high / mid, and the other connected through XLR for the bass?

Then adjust the gain on the amp for gain matching.

[Dart87]

Any reason not to use a quality "Y" or splitter cable from the DVA RCA output to the amplifiers' RCA inputs? XLR splitter cables are also an option but tend to be more expensive and may be a waste if the amp is not balanced/differential.

I have used Blue Jeans Cable for some specialized cables and would recommend.

Out of curiosity what amps and speakers are you connecting?  Sounds interesting.

[morganc]

Give Mary a ring. She will know the answer…..

[Mary]

I asked the designer about this and here is his reply:

The DVA Digital Preamplifier's XLR output level is effectively twice the RCA output's level. Or, to look at it another way, if you look just at the "hot" side of the XLR output, you'll see that it has the same level as the RCA output. In fact, these two outputs are the same signal. So, if you use the RCA output to drive one amplifier and the hot side of the XLR output to drive another, both amplifier inputs will be connected in parallel. This shouldn't present an issue for the DVA Digital Preamplifer as long as neither amplifier has an unusually low input impedance. (The DVA Digital Preamplifer should be OK driving loads of 2kΩ or higher.)

If you use the cold side of the XLR output to drive the other amp, the two outputs will be electronically isolated. However, the cold XLR signal will be out of phase in relation to the RCA signal.

Mary