To Almarg, Mensch and those who responded:
I bought the BAT VK-200 amp and hooked it up to the Rogue Sphinx integrated amp's variable output (pre-out) using a pair of Signal Audio Cables (that is, XLR male to RCA male). They supposedly take 50 hours to break in. The VK-200 is an excellent sounding amp with deep bass, and detailed midrange.
Almarg was almost right on the money about some loss of volume because of the IC cable used Actually, this is not totally conclusive on my part I first played Fleetwood Mac's "Tusk" CD, and it was loud at 12 to 1.00 o-clock I followed with a specially produced classical music sampler offered by the magazine, HI-FI Plus. This CD was produced to showcase microphones produced by Neumann and Sennhiser engineers The CD's sound quality is very good, but not spectacular. When I got to the excerpt from Stravinsky's "Firebird Suite" ( the Finale), I gunned the volume a bit more, and discovered that at a point it got no louder. I looked at the volume control and it was at 5 o' clock. The difference in volume levels between the two CD's "may" (I say may) be attributable to the output level that each CD was recorded. It also could be what Almarg suggested a consequence of not using a XLR to XLR interconnect, despite the fact that the amp is designed for both balanced and unbalanced operation. The latter needing an adaptor. or XLR to RCA cable. Cheers, Jim