Pass Labs xa - .5 amps


Has anyone compared the new Pass XA-30.5 stereo amp to the XA-60.5 mono amps? Interested to hear your impressions. I am considering one (or two) these for use with my ML Vantage speakers. Thanks.

Bob R.
rmrobinson1957
My earlier comment about sound superiority when compared the XA60.5 against a Stereophile Class A amplifier was based on using single-ended connection. My preamp is also in the Stereophile Class A category. Its manufacturer has a radical viewpoint that balanced connection does not make a difference in light of their well crafted circuitry. So back then there was that lingering thought about perhaps my preamp could be eclipsed by an different preamp of equivalent pricing but with balanced connection. I am known to be picky and difficult on just about anything, even as my preamp sounds pretty good and is well respected by enough professional reviewers. Yet after getting the pair of XA60.5 and am so surprised at their performance, I have resigned my concern.

The point here is more about Class A amplifier than about Pass Lab. I just dive right into Pass because they are the measuring stick and the bridging gap when people attempt to compare solid state amplifiers to tube amplifiers, with each category having its own strengths. But I would think a few upper-end Class A amplifiers beside Pass could somewhat portray what I am talking about.
Unsound you are correct in theory. The good news is that most companies which bother to produce such unwieldy beasts also care more than usual about quality because these are not produced for average audiophiles but for real old school die hards who don't care about size, heat, looks, efficiency or the latest " review". Spatine there are many well executed pure class a designs even though I admire Nelson Pass designs and have enjoyed talking to him from time to time about all things audio. - Jim
I must bow to the respected Audiogoners that have personal experience with the Pass amps, but, I was under the impression that the special design traits of the Pass amps benefit even more so from balanced use than is typicaly the case with other amplifiers.
Hi

I'm normally running Accuphase DP-67, C-275 and Krell FPB 300CX on my Vienna Acoustics The Music. My goal is to get some more body voices - the bass with the Krell is fine ;-)

I have tried Pass XA30.5 in my system and I especially like the midrange and the involvment. What I don't like is a rather slow and to heavy bass. The speakers are 4 Ohms and sensitivity 91 db. They have three 9 inch woofers pr. side.

Can anyone comment on if XA60.5 would solve the issues I have with the XA30.5? It's bigger amp but I have read here on Audiogon that the sound is very similar - they just give a possibility to play louder... (?)
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