The 715, 815, HL-722, and HL-822 are all deviations of the same “guts” – each model simply bearing a different cabinet.  The service manual and parts are the same for all four models.

This model was designed to be used with a combo preamp for portable organs and keyboards.  It features both a rotary channel and a full range stationary channel.

It is a Pro-Line “portable” version of the HL-722.

Some specimens appear to have been built with no grill cloth and no silver accents, making it more of a plain Tolex covered box in appearance.

Amplifier Type	Solid State
Output Power	215 Watts total
Drum	Rotosonic
Horn	1 - Compression Driver
Speeds	3 Speed (Chorale/Stop/Tremolo)
Interface	11 Pin