Hi!

I got a new (MESA/BOOGIE Formula) pre-amp that seems to be very sensitive to
signal levels. I didn't recover the problem described under using my
Marshall 6100 head.
The preamp/amp are built in to a rack with a Neutrik (NYS-SPP-L) patchbay. I
run my cable from my guitar to the patchbay which is sent to a VOX wah pedal
then back to the patchbay because I need to be able to choose which pree-amp
I plug into (I have 3 different pre-amps, using the Marshall as the power
amplifier).
The 2 cables going from and going into the patchbay seems to be the bad
point of this system. These are self-made from high quality Neutrik plugs
and Klotz cable (Pro Audio Instrument Cable Low Microphonics). Both cables
are about 2 metres. The solderings are OK.
If I plug directly into the pre-amp I get a much cleaner, hotter signal that
sounds punchier. If I go through the patchbay I lose some high end and some
punch.
How to overcome this problem? Where do I go wrong?
Thanks for your help!

bence