HA1M SIGNATURE SERIES User Manual - page 14
Page 14 of 19
1.
3.5mm
Headphone Jack socket
FRONT PANEL USER CONTROLS & CONNECTIONS
1. 3.5mm Headphone Jack Socket
This is the output of the headphone amplifier presented on a standard 3.5mm TRS (tip Ring
Sleeve) jack socket. It is driven from separate output amplifiers to the 6.35mm headphone
output so different impedance headphones can safely be used on each output. Although the
HA1M is a stereo headphone amplifier mono earpieces/ single ear headphones with mono
jacks can safely be used.
2. Left Volume Control
This rotary potentiometer adjusts the audio level (volume) of the left input to the headphone
amplifier. Turning it clockwise increases the level and anti-clockwise decreases the level.
3. Right Volume Control
This rotary potentiometer adjusts the audio level (volume) of the right input to the
headphone amplifier. Turning it clockwise increases the level and anti-clockwise decreases
the level.
4. Power on Indicator
When on this bright blue LED indicates that power is applied and the HA1M is on.
5. 6.35mm (1/4”) Headphone Jack Socket
This is the output of the headphone amplifier presented on a standard 6.35mm TRS (tip Ring
Sleeve) jack socket. It is driven from separate output amplifiers to the 3.5mm headphone
output so different impedance headphones can safely be used on each output. Although the
HA1M is a stereo headphone amplifier mono earpieces/ single ear headphones with mono
jacks can safely be used.
2.
Left Ear Volume
Control
4.
Power on indicator
5.
6.35mm (1/4”)
Headphone Jack socket
6. ‘Mono’ Switch
When on left & right
inputs appear on left &
right headphone
outputs.
3.
Right Ear
Volume