Phild suggested switching either the leads between the preamp and amp, or speaker cables.
Well, when I recently hooked up the Herron preamp (absolute polarity inverting) to the Herron monoblock amps for an evaluation I reversed the preamp to amp leads. Result - absolutely no soundstage and poorly controlled bass. I was so disappointed that I was about to send everything back. Someone suggested putting the preamp to amp leads back to "normal" and reversing the speaker cables. I did and bingo, everything was as I expected them to be.
Don't know if this is unique with Keith's gear. Can't explain it but that was my experience.
Well, when I recently hooked up the Herron preamp (absolute polarity inverting) to the Herron monoblock amps for an evaluation I reversed the preamp to amp leads. Result - absolutely no soundstage and poorly controlled bass. I was so disappointed that I was about to send everything back. Someone suggested putting the preamp to amp leads back to "normal" and reversing the speaker cables. I did and bingo, everything was as I expected them to be.
Don't know if this is unique with Keith's gear. Can't explain it but that was my experience.