Pass Integrated to Pass separates

If I were you I wouldn't go to the Pass separates. The Theos like power, so the XA 60.5 probably won't work optimally. If you go larger Pass amps the costs quickly skyrockets and you'll then also have to question whether the XP10 is the right preamp. Since you like the Sonos, consider replacing it with a better media player. Something like the new Sony.

Your system looks like it sounds pretty good as it is. Good luck.

I have owned the XA30.5, 60.5, 100.5. Now I have the X250.5 and I want to buy this year X350.8. I have listend and tested the integrated amps. I did not like them so much. Stage was wide and deep, but withing the stage instruments were much too big in proportion. There was no intimate focus what is very important. Also the X150.5 I did not like. The XA30.5 and 60.6 are exeptional good for the money.

Sonos has nothing to do with good hifi. I sold it, I never will sell this again now I run my own business. Even for the money you can get superior stuff. They use very cheap components.

Which speaker do you use now.....

Pass Labs can give a wide and deep stage, but when you use a brand like Sonus which is a 2 dimensional brand in the kind of image it gives. So you will loose the depth and wide which a Pass Labs can give. It is the same as you buy a Ferrari without the engine. And you put in a Ford engine. It doens't make sense at all!!

I completely agree with the Ferrari analogy. I wonder if I might consider an x250 with the xp10? It would leave some funds for a more appropriate source. I can always move to class A later. I don't have an issue with the sound I have now, I just want more of it!

Hi Bo, not to hijack the thread too much, but I am researching Pass amps and thinking about buying one for my Legacy Audio Signature II speakers(very large floorstanders). Do you like the X250.5 much more than the X150.5? Seems like they should sound about the same, except for more power with the X250.5. Also, since you have so much experience with Pass, for the money, which Pass would you recommend for 93dB speakers and moderate listening levels?

The XA60.5 amps may work with your Theos. The amps deliver 60 watts of Class A power at into an 8 ohm speaker, then they switch over to Class A/B mode and can deliver about 130 watts into 8 ohms.

Here are the measurements that Stereophile got from the XA60.5s:

"The needle of the front-panel meter remained just to the left of 12:00 at 8-ohm powers below 60W. At 60W it moved slightly to the right, reaching 1:00 at 100W into 8 ohms and 1:30 at 120W. Specified as putting out 60W into 8 ohms (17.8dBW), the XA60.5 considerably exceeded that power, delivering, at 1% THD, 130W into 8 ohms (21.1dBW, fig.4), 210W into 4 ohms (20.2dBW, fig.5), and 330W into 2 ohms (19.2dBW, fig.6). The THD starts to rise above the noise floor at high powers, but is very low at powers of a few watts with a 1kHz signal, even into 2 ohms."

I would talk to the people at Pass or Martin Logan to see if that is enough power for your Theos.