JCM 900 Combo Model 4102 - 100W Hi Gain Duel Reverb
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votes

Hello. What is the correct position of the impedance selector? Everything is stock. Also, is there a serial number somewhere on this amp? I would love to know these things. Thank you!

asked 24 Aug 2016 at 06:38 PM

Dave Haring
Answers: 1
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votes

Thank you for your query, to best help answer this please email Jo Green in our Service Department who will be able to support you on this. Her email is jgreen@marshallamps.com

answered 30 Aug 2016 at 09:28 AM

Marshall
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