sentences:  Other features include a Bass, Middle, and Treble EQ, Master Volume, Presence, Normal/Bright, and spring reverb (solid state for both the driver and the recovery circuits).Footswitch and External Speaker jacks are also built in.As an all-tube (pre-amp and power sections) combo guitar amplifier, the Hot Rod Deluxe features a pair of 6L6GC beam tetrodes for the power section and two 12AX7 dual triodes for the preamp section.