HA75-DAC HEADPHONE AMP
Hafler
6
TeSTInG ConneCTIonS
Set all of the front panel knobs and switches to the start position with
the source select switch set to the input you wish to monitor, volume to
zero, focus switch off, load set to 100 Ohm, and loudness (VOX) to the
middle position.
uSInG THe SouRCe SeLeCT SWITCH
The intent is simple: let’s say you have your regular hi-fi source such as a
CD player or preamp connected to RCA Input and then the audio output
from a laptop computer connected to the USB input. Connecting the
HA75-DAC in between the hi-fi preamp and power amp using the Thru
output also lets you route the signal from your laptop to your power amp
using the HA75-DAC to select the active input and control the levels.
Plug in your headphones and then turn up the source audio system
to a low level. Slowly increase the level on the HA75-DAC using the
volume control knob. Testing at low volume will prevent damage to your
headphones and protect your hearing should a connection be faulty. If
no sound, check to make sure you have the front panel select switch set
to the appropriate input. If all seems OK, increase the volume until you
have reached a comfortable listening level.
In the studio you can use the XLR inputs to connect from your recording
system and the USB to listen to guest mixes from their laptop. Depress
the analog select switch on the back panel to use the XLR inputs, and
switch between the recording rig and the guest computer using the front
panel source select switch.
USB Input
USB Input
RCA Input
XLR Input
