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Pre amp for Pass Labs XA30.5 – Tube or SS

I’m updating my system from the bottom up and have settled on the Pass Labs XA30.5 for power amp. The speakers are a pair of Harbeth C7-es3. Now I’m debating between getting a tube or solid state pre amp. Below are the ones I consider:

SS pre amps - Pass XP10, Ayre K-5xeMP

Tube pre amps – Audio Research Ref 3, LS27 used, LS 26, LS-17SE; Conrad Johnson ET-3, ET-3SE used, Premier 17; Leben pre amp.

Can you share your experience in any of these pre-amp with Pass Labs power amps? Any other SS or Tube pre amp that are worth exploring? Obviously, the Audio Research Ref 3 and LS 27 command a higher price.

I’m looking for a good synergy between pre-amp and power with correct output/input impedance matching. Music I listen include: vocal – both female and male, jazz, pop, chamber, symphony, etc. I’m looking for full-body mid, solid bass and extended treble, accurate sound stage, with a focus on vocal presentation.

Any suggestions are appreciated.
r0817
czbbcl's avatar
czbbcl
1,752 posts
 
Out of what you listed I would chose the XP-10 for the ss choice nothing like system synergy IMO. Then either the ARC ref 3 or 17ls series II cj for the tubed units. The ARC has balanced outputs so that may present an advantage over the cj unit if that matters to you.

Nelson Pass has commented that either cj or ARC work well with his power amps; so take it from there. The ARC will be more analytical (ss) in its presentation whereas the cj will sound more like a tubed unit at least in my experience; both are great pre-amps.

Chuck

Good Luck and Great Amp Choice by the way.
marakanetz's avatar
marakanetz
5,473 posts
 
far not too many tube amps will be good with your amp and definitely not ARC of any model
you can try BAT VK51 or VK31SE, but using solid state preamp is encouraged. I'd choose Wyred4Sound for clarity and transperency.
tls49's avatar
tls49
1,351 posts
 
I’m looking for a good synergy between pre-amp and power with correct output/input impedance matching.
How could anything be better than a Pass preamp?
czbbcl's avatar
czbbcl
1,752 posts
 
Directly from the mouth of Nelson Pass.

"Our experience is no problems at all with the ARC or CJ products with regard to interface. The amp doesn't care about source impedance. It's actual input impedance is close to 0 ohms, and the input impedance spec comes from the resistors we put in series with that input. Adding a little more from the source doesn't create issues."

Tls49 I agree and the one I would go with if it were my decision.

Chuck
charles1dad's avatar
charles1dad
10,250 posts
 
RO817,
If Mr Pass himself says the ARC and the CJ will be fine, thats good
information. Based on the criteria you list as desirable I'd select the CJ line
stage or the Leben(from your stated choices) as most likely to provide the
full body/tone you want(as well as excellent vocals and
soundstaging).Tube rolling will fine tune to your preference. I believe these
two will be more musically engaging and less analytical and dry.
Good Luck,
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