Harman Kardon TC300 - Amp Plays Clearly But Not Loud Enough; Amp Plays Clearly at Low Volumes but Distorts at High Volumes

Problem Cause Remedy
Amp plays clearly but not loud enough at Input control adjusted too low.
high head unit volume control settings.
Readjust input control (see "Controls and
operation").
Amp plays clearly at low to moderate head Speakers are not rated for higher power
Upgrade speakers to a model that can
unit volume control settings, but sound and cannot handle the amplifier's output. handle higher power and/or readjust
distorts at high volumes. INPUT control counterclockwise.
Input control is adjusted too high and Readjust input level control counterclock-
amplifier is clipping.
wise to eliminate clipping (see "Controls
and operation").