Pass Labs versus Jeff Rowland, Audio Research

I have a Rowland 2 chasis version of the model 8t.Although it is human nature for all of us to justify our own equipment,let me tell you a bit about my experience.I have owned,happily, CJ tube Equip as well as Audio research.I try to hear all current stuff so as to keep up to date.I switched to the Rowland because I wanted Stability(no tube problems)and was tired of the heat associated with tube amps.Originally my second chasis housed the battery power supply,which performed superbly.However,I noticed,on the Rowland website,that I could update my battery chasis to the new SWITCHMODE POWER SUPPLY technology.This was supposed to be even quieter than the pure d.c. battery,and give me a power rating that doubled my battery power(from 100 wpc to 200 wpc).I may as well state that I had zero complaints about the performance of the battery on my AVALON ASCENTS(a very easy load).What I was REALLY not prepared for was the incredible improvement,in virtually every area,that was brought about by the NEW power supply technology.I mean it was now even quieter on backgrounds than the already DEAD QUIET battery,which I still can't figure out.I can only imagine how fabulous the newer Rowland stuff must sound,and he has found a way to reduce size and offer real value in seemingly low prices,as compared to some of the other overpriced stuff.Let alone NO HEAT and GORGEOUS build and metalwork.More importantly,I really can't say I hear any real improvements in music reproduction with the better tubed stuff,as compared to my Rowlands.I still love the sound of QUALITY tubed equip.,but my Rowland sounds,to me,and without rationalization,as accurate at reproducing musical notes as anything I've heard,AND I don't have to sit in my bathing suit(in January,in N.J.)!!