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 29, 2020 at 1:17 pm #728 chungjhParticipant @hpfish10 If you know how to solder, it is a piece of cake. Unfortunately, I don’t know how to solder. I paid someone $85 to solder the 6 wires. A new bias supply will run you $295.