I think the Pass 260.8 will be overkill, especially when running dual subs. If looking for more class A power, go with Pass XA series amp... the XA 60.5 (or 60.8) should be adequate for 40.2's.
I'm using a vintage 125 wpc Music Reference RM9 MK2 tube amp with EL34's with 40.1's and it gives me more than enough power.
I'm using a vintage 125 wpc Music Reference RM9 MK2 tube amp with EL34's with 40.1's and it gives me more than enough power.