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Marshall DSL20CR, 20W combo w reverb FX loop
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Amazon.com: Marshall Amps Marshall Origin 20W combo w FX loop and Boost (M-ORI20CU),Black : Musical Instruments
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Marshall SV20H Studio Series 20-Watt All Valve Plexi Head with Effects Loop 5030463491157 | eBay
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Marshall Origin 20 20W head w FX loop and Boost | eBay
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The Guitarist's Guide to Electric Guitar Amps - Part 3: Effects Loops -...
