Musical Design Pre Amp

Encountering a lot of white noise "air" when used with my McCormack DNA-125. Is this a poor match? Thoughts
I have been pretty impressed with my musical design pre amp. I also found John who is Musical Design to be very responsive. Why don't you give him a call or email?
I have used a SP2-B with several amps including Belles and Marsh and it was always very quiet. If both amp and preamp are working correctly you should not here any noise. Maybe a bad tube?
I have to agree with the previous postings... check the tubes or call John, he's always willing to help. I personally, love my SP-2B.
if you're referring to tube rush, then you might hasve a bad tube...i had an sp-2b and one of the tubes went bad...everytime i turned it on or switched inputs the rush would come at me (sounds like a fading psh! noise). not to mention the noise floor increased because of the bad tube. i would try putting different or new tubes in and see what happens.
Had a SP2 Pre-amp with a Musical Design 140i amp. The pre-amp made my amp hum loudly!!Figure that. John Hillig couldn't fix the problem even though he replaced the amp's transformer. I changed amps and quiet ocurred. Got rid of the SP2 and never looked back!!
I sent my SP-2B back to John Hillig for the tube upgrade and after I got it back it made a horrible buzzing noise. I sent it back and John gave me a bunch of lip service acting like a jerk and denying it was the preamps fault.

I will never trust him again.
Replaced the stock tubes with NOS Mullards and all's quiet as can be.
Glad to here it worked out ok. At one time mine sounded a little "fuzzy" but a re-tube and it sounds great.