Based on the classic vintage Offset tube head

Two high and low channels, gain controls for each channel, treble mid, bass and presence.

Tube Rectification  gz34 , power tubes (el34 or 5881 to choice) 12ax7 preamplifier tubes

Top of the line components, mallory/illinois/silver mica/ JJ/ Alpha/ Belton/ Carbon Comp resistor / cliff , carling.