2. amps-preamps
  3. 1140360469

Preamp Connections - Balanced vs. RCA

I didn't know quite where to put this, so I figured this would be a good spot.

I just replaced my old preamp with a Pass X1, which has the choice of either balanced or single ended connections from the source components. My old preamp was RCA only. So right now I'm using my existing RCA ICs to get to the X1.

I'd like to consider trying some balanced interconnects (rumour has it that the X1 runs optimally with balanced connections), but I'm worried about the voltage delivered to the preamp. My sources (like my D/A) have the standard nominal 2 volts out from RCA and - what is it? - 4 volts for balanced. The thing is that X1, even with the gain set to 4 dB, seems to amplify the signal a lot faster than my old preamp. I'm only using a small portion of the volume control to get the needed volume. If I go to a balanced in on the X1 will that range now be even less since there's 4 volts at the input instead of 2?
tonyptony

Showing 2 responses by rgodin

rgodin
85 posts
 
I had an X2.5, which uses a similar design to the X1. Even at the lowest gain settings I was getting too much volume. I used a pair of ultimate attenuators between my source and the X2.5 to drop the source gain, for an addition $300.

Also, I found that the 3 dB steps on the volume control were spaced too far apart. I was always stuck between too loud and too soft.

I thought the sound of the X2.5 was very good, but the lack of a volume control with small incremental steps just got to me. I replaced it with a Placette Active that had a dual range volume control, each with 127 steps. I like the Placette much better and I can always get the volume exactly where I want it.

Rick
rgodin
85 posts
 
http://www.tweakaudio.com/Ultimate%20Attenuators.html

You can sometimes find them here used for $250 to $300. That is how I found mine.
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