ADA Preamps > Original MP-1

New ADA MP-1 - questions

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Systematic Chaos:
I had a similar issue with an MP-1 that had barely any gain/dist and dialing OD2 had no effect at all.
Solved the issue finally - U3 (VTL5c4/2 Vactrol that controls OD2) was bad.
Check this thread (if you short/hotwire the two lugs of U3 you should get OD2 and it’s gain maxed out):
http://adadepot.com/index.php?topic=2830

tnipe:

--- Quote from: Systematic Chaos on October 28, 2022, 11:17:26 PM ---I had a similar issue with an MP-1 that had barely any gain/dist and dialing OD2 had no effect at all.
Solved the issue finally - U3 (VTL5c4/2 Vactrol that controls OD2) was bad.
Check this thread (if you short/hotwire the two lugs of U3 you should get OD2 and it’s gain maxed out):
http://adadepot.com/index.php?topic=2830

--- End quote ---
I'll buy a multimeter and check it! Thanks.

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