Pass labs X250.5 vs Jeff Rowland Model 10, or 201

I replaced BAT monos with the 350.5. Mine now has about 600 hours and I still love it. It does not quite have the decay of a warm tube amp such as Conrad Johnson, but it is atleast as warm as the ARC amps. The sound stage is large and focused and the bottom end is much more defined than you could expect from a tube amp. I am driving the amp withy either an ARC Ref 2 or a Pass Labs X.0. I do prefer the ARC preamp on everything except rock.
Jeff

Thanks, Jwon.
Did you hear an improvement in sound from 100-hours to 600 hours ?
At 100 hours I still think the bass needs a little refining.
I am using the Pass Amp with my APL 3910 direct. No Preamp.

It took about 250 hours for the unit to mature. Base did improve and the depth of the sound stage grew larger. The general warmth and musicality stayed consistant after about the 100 hour point. By the way, I'm driving Avalon Ascents which are not easy speakers to drive in the base department. The 350.5, however, does a wonderful job of surprising audiophile friends who heard these speakers driven by various high powered tube gear. (VAC, BAT,
ARC ) Even some of my tubes or die friends have had a hard time finding fault with this power amp.
Jeff

I own Studios as well and one thing for sure is that you need gobs of power to really make them work. I tried a bunch of stuff. For sure, the Rowland 201s cannot control the bass on the Studio. Am using a Rowland 302 now.

Carl

Carl,
Have you tried the 501? how the 302 sound with Revel Studio? and what cabling? thanks in advanced.