I run a Conrad Johnson Premier 11 which is 75 watts or so if memory serves and it is fine with 804's. Conrad Johnson plays VERY nice with B&W and I would recommend you spend a little extra for a premier 11 and a preamp long term you will be very glad you did as I have my current rig for 2 years and cannot find it in myself to change which is almost unheard of
Jolida 302B with B&W Natalius 804
I am currently having a pair of B&W 602 S2, I am planning to upgrade to the Natalius 804, I never tried tubes before, the only reasonably prices tube integrated with good reviewes is the jolida. I am just worried if this amplifier would be able to drive the B&w N804.... I would really appreciate your comments and suggstions.