Reply To: Atma-Sphere MA1 3.2 vs Pass XA60.8 amp home › Forums › General Discussion › Atma-Sphere MA1 3.2 vs Pass XA60.8 amp › Reply To: Atma-Sphere MA1 3.2 vs Pass XA60.8 amp December 22, 2020 at 8:47 pm #683 chungjhParticipant @hpfish10 I loved Pass Labs X250.5 amp with my M545. But it took 5 hours to sound good in my tiny room (9×11). How about CJ P350? Does it warm up quickly from cold start? Also, what is the heat production like? Idling Wattage, that is.