Oh I've been running the b&K on the 5000's for 2 yrs. Well broken in and definitely make beautiful music together on solo piano and chamber music. But on large scale works they get congested. We also play quite a lot of pipe organ and I feel the bass is lacking support. Hence the desire for more power.
I am leaning towards the Van Alstine 600R because it's a hybrid valve/FET which may have a smoother top end than the W4S - more like what I am getting with the B&K but with tighter and lower bass.
I am leaning towards the Van Alstine 600R because it's a hybrid valve/FET which may have a smoother top end than the W4S - more like what I am getting with the B&K but with tighter and lower bass.