Agreed on the Line Magnetic. The LM-805ia - which has replaced the 508ia but with similar specs - lists for the OP's 5k price point and has a negative feedback control with 4 positions.
Tube Amps With Good Bass Qualities
I have been reading over posts about tube amps and their bass qualities. I understand that for the most part, that a ss amp with have an edge in bass qualities compared to a tubed amp. Damping factor, etc. But I can give up a little of that edge for what I enjoy in the midrange qualities of a tubed amp. So my question is, what tube power amps have you heard that have good bass qualities? Raven, Quicksilver, Mac, etc.? Let's give a price point. 5K or under. What do you think?