A customer has just picked up a Marshall 1976 JMP 2203 and has brought it in for a full checkover. This clip is all about the missing bright cap and full run down of the amp open on the bench. Stay tuned for part II on this amp which will be about some simple higher gain mods.

headfirst.amplification@gmail.com
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0:00 Intro
0:29 No Kerrang!
2:22 A/B tone test
4:34 Subs!
4:52 Get your old Marshall checked!
5:53 At The Bench - checking out amp as received
14:53 Testing the bright cap in/out (phone audio)
18:11 Power tube bias
20:36 Voltages
23:17 Outro

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