What is the Sound of Impedence Mismatch?

Thanks guys.

I use HT Pro Silway II 2M interconnects between the two.

Could you give us the complete system?

Interesting coincidence, "sounds" like my problem as well. I posted the thread just below this one. Any help on that thread would be greatly appreciated. Cal Audio Alpha DAC mismatch with Adcom GFP 750 Preamp.

Thanks,
Doug

So...I asked Nelson Pass (duh!). He says that, yes, it is 11K single ended. He added that I could insert
resistance in series with the input if I like. The gain of the X150 is about 30 dB, so if I put 22K in series I would still get 20 dB gain.

What do people think of this idea?

By the way, the reduction in gain should not be a problem, at least on the face of it. The lowest setting of the First Sound is sometimes too loud as it is.

The insertion of a series resistance in order to achieve higher input Z may be worthwhile, or may introduce some other undesirable nasties & so could be a tradeoff situation.
In order to do this properly you'll need to get high quality resistors & also find a place to interrupt the signal path, possibly at a point where an input signal coax is running from an input-RCA connector to an input board. If you can desolder the coax connection from the input board & solder in a resistor there then that would likely be a good place. Regarding the proper selection of resistors, if you can get the same brand & type that Pass uses in their equipment then the sonic signature would be compatible with what's already in there. If not then make a call to Michael Percey audio at:
http://www.bainbridge.net/percyaudio/