Hi Rtn1,
I own Soundlab A1s PX and the XA.5 series from Nelson Pass has raised my curiosity. As you, I can not imagine my system without a great tube preamplifier, but I have been worried about the 20/30Kohm specification of the input impedance of the XA.5's - usually unbuffered tube preamps prefer to see an impedance of more than 50kohms. Any issues with that aspect?

microstrip March 16, 2010 23:33

Hi Rtn1,

Congratulations on your new Pass amplifiers. How do the Pass compare with the much more powerful Karans?

microstrip February 23, 2010 00:23