This 20W combo is based on the popular Deluxe Reverb and is one of the best gigging amps for all but the loudest bands. Two 6V6s and a 12″ speaker produce just the right amount of volume and smooth power tube breakup for most club situations. The + model features a bigger output transformer, a pair of 6L6 power tubes and a bias switch. Output is approx 35W with the 6L6s. The one pictured features one 12″ and one 10″ speaker which produce a nice combination of volume, sutain, breakup and chime. This one was built for Chicago blues guitarist Dan Carelli of Billy Branch and the Sons of Blues.