In this video I demonstrate a 1987 Marshall Studio 15, Model 4001, 1x12 combo. This is the first Marshall amp that featured 6V6 power tubes (15W). It's completely amazing. It's was also the first Marshall combo to include the Marshall Vintage V30 speakers. I'm using a 2013 Gibson SG CS to demonstrate it today, but there will be a Strat video coming up soon. The PT is replaced by a Mercury magnetics.