Your Hovland will not like Pass amps. The Hovland has a high output impedance (2500 ohms, I believe) while the Pass amps have a low input impedance. I don't know about the MFA amps, probably not a problem since they are tubes (right?), but in combination with the long cable runs, incompatibility in this part of the system is one area I would look at. As a diagnostic measure, move some of your front end close to the amp and go to a 1M or 2M interconnect. Then, try a different amp and/or a different pre-amp. You are not looking for a typcial "different sound" here but for an obvious aha!, which will tell you something was amiss in the compatibility area. Good luck!
Opinions on why this system is uninvolving
I have just upgraded my system in a number of ways from Snell Type A/IIs to Revel Studios; from Audible Illusions Modulus 2 to Hovland HP-1; and from the earliest EADs to Metronome Technology DAC and transport. I find the system uninvolving much of the time. I also find it lacking in dimensionality, find it sometimes hard sounding and I notice image wander. Here's the whole system:
Revel Studios
Hovland HP-1
MFA 200C mono amps
Metronome DAC and Transport
Shunyata Hydra on amps
Power Wedge I on other components
Various high end cords incl. Top Gun, Shunyata Mamba and EMI whales
Tara Prime (or perhaps 1800) speaker cables (bi-wiring)
Audioquest Ruby interconnects between amps and pre amp (about 30-foot run)
Hovland interconnct between DAC and preamp
Siecor optical AT&T between DAC and transport
Any thoughts on how to arrest these problems would be greatly appreciated. I was thinking about trying solid state amps like the Pass 250 or 350, the McCormack DNA line, Proceed or Rowland, but I'm not really sure that will make a sginficiant difference. I know it could change the sound signficantly, but not necessrily for the better (which I realize is completely subjective anyway).
Revel Studios
Hovland HP-1
MFA 200C mono amps
Metronome DAC and Transport
Shunyata Hydra on amps
Power Wedge I on other components
Various high end cords incl. Top Gun, Shunyata Mamba and EMI whales
Tara Prime (or perhaps 1800) speaker cables (bi-wiring)
Audioquest Ruby interconnects between amps and pre amp (about 30-foot run)
Hovland interconnct between DAC and preamp
Siecor optical AT&T between DAC and transport
Any thoughts on how to arrest these problems would be greatly appreciated. I was thinking about trying solid state amps like the Pass 250 or 350, the McCormack DNA line, Proceed or Rowland, but I'm not really sure that will make a sginficiant difference. I know it could change the sound signficantly, but not necessrily for the better (which I realize is completely subjective anyway).