Difference between MRK II and MRK IIB

Pre Recto days. Boogie modified Fenders, Mark I-IV, Dual Calibers, etc

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GM1
Bottle Rocket
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Joined: Sun Jul 14, 2019 9:57 am

Difference between MRK II and MRK IIB

Post by GM1 » Tue Apr 06, 2021 1:38 pm

Wanted to get some input on the transition from MRK II to MRK IIB. Was the only change the addition of an effects loop? And - did some amps leave the factory with slave in/out but modified as an effects loop?
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