Dual Mono Tube Pre-Amps


I have tube mono-bloc amps and was considering changing out my pre-amp to a dual mono tube pre-amp. On paper it makes sense but is there really much of an audible difference? Also any suggestions for the pre-amp?

I have a set of Tom Tutay updated Altec 1570b mono-bloc amps directed by an Air Tight ATC-3 pre-amp.

Thanks
lrm1jaf
I will second Tvad's recommendation. Give Emmanuel Go a call and discuss if your needs can be met. Great preamp.
VTL Ultimate is one of the best, has a seperate power supply, and is a dual monaural design. Priced right at just over a grand WHEN they come up.
Dr. Klimo's merlin preamp from Germany. Not that well known here in North America but certainly a definitive statement nonetheless regarding "true" dual mono preamps. Sonically speaking it's top shelf and surely competition to the finest preamps anywhere.
I do believe that audible illusions modulus and MFA magus are both designed as dual mono units with dual volume controls. Both are awesome sounding. I hate having 2 volumes.
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