The RA53b is a high powered headphone amplifier with five 1/4” and 1/8” (3.5mm) headphone and earphone outs. Two RA53b units may be linked together and mounted side-by-side in a universal rack tray for a total of 10 outputs.
# 5: 1/4"" TRS Headphone Outputs with Level Control
Lots of Gain
1/4"" and RCA Right and Left Inputs
Inserts on Two Channels
1/4"" TRS Stereo Input, 1/4"" Mono Input
Link Input/Output for Connecting Two Units Together