What tube pre-amps pair well with Pass amps?


Does anyone have experience with this?  I'm running Focal Sopra No. 2s and I understand the Focal's pair nicely with Pass amps.  Any tube pre-amps you'd recommend for consideration? I like the classical rock, but am gravitating more to jazz, classical and vocals. I just want to try something new.  Thanks.
billtro
@invalid Thanks for the kind words! Offhand, there is no optimization or tweaks needed for any of my preamps to mate seemlessly with any of the Pass amps. I have dozens of happy customers currently using my line-stages with Pass amps without any issue with integration. Feel free to contact me via my website if you have any other specific questions! Best wishes, Aric
Wow!  Talk about a wealth of info!  While I'm still in my researching phase, I want everyone to know that I appreciate each of you for taking the time to share your experience and perspectives!
I have Pass Labs XA60.5 amps. My preamps are both Cary Audio - SLP-05 and SLP-98P F1 version. The modified SLP-98P sounds a tad better, so the SLP-05 is off to Cary for the Ultimate Upgrade. It should sound as good or better than the 98P when I get it back. The 05 has more features that I like - HT bypass, balanced operation, no phono.

billtro

Yes, the xa30.8 has unbelievable drive capability. I used to have a pair of Magnapan 3.7i's with a pair of their DWM woofers wired in parallel to the xa30.8 and that means it was a constant 2 ohm load that the amp "saw" and it drove that setup effortlessly and sounded so musical it wasn't even funny. The are a lot of lesser amps that would have just shut off with that setup. I enjoted that system for 3 years. I am now using a pair of Eminent Technology LFT8B's with that same amp and I love it. Those speakers are 83db efficient and it also sounds amazing. 

I've had a lot of good preamps over the last 5 years such as Parasound JC2, a Mac C52 and a Rogue RP7 and others but the PS Audio BHK preamp was so much more musical with much better tonal color and much more accurate timbre. It just draws you into the music. I think the PS Audio is a very underrated preamp for the money and maybe gets overlooked by audiophiles willing to spend up to $10,000.00. You have to put a pair of vintage 1950's or 1960's nos tubes in it (I used a pair of Telefunken 12au7's) and it just comes to life. It will surprise you, it did me. Retails for $5995.00 and you can pick them up used for between $3 - $4000.00. Bascom H King has been designing tube based electronics for over 50 years! He knows all the tricks. Great preamp for the money. 

The Pass amps sound best when with balanced interconnects. In my opinion, Pass class a/b amps sound very good but their class a designs are magic. If you can take home that xa30.8 and listen to it in your own system I think you'll wind up getting one. Their xa25 is supposed to be a giant killer if you don't run balanced cables. Nelson Pass is another guy who's forgotten more than a lot of these other amp designers may ever know. The guy is a genius. Hope this helps. Good luck.

Scot
I would agree with laudionut   I've had both an xp20 pre and an xp30 and they did some things very well such as great dynamics and very quiet and very transparent but they lacked musicality in my opinion. I found them to be quite sterile and lifeless and I'm a huge Pass Labs amp fan. I used them both with an xa30.8 and was very disappointed. Sorry Wayne. 

Scot