I agree with Musicman59 that the SR009/727II is very enjoyable combiation and I have no doubt that the tubed Stax is as good or better. After listening to some Patrcia Barber cuts off her Nightclub CD at Musicman59's place, I listened to the same tracks with my RSA A-10. The A-10 offers a larger soundstage and a greater sense of Patricia being right in front of me in my living room than the 727II. The A-10's transparency is IMO a clear and significant step up from the 727II. After hearing the 727II, I would like to hear the SR009/007tii combination because I have a preference for tubes.