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Appendix B: Technical Information
HM-4 4-Way Headphone Amplifier Specifications
Audio Performance
Maximum Level (1/4" input)
Input / Output
Input Type
Input Impedance
Output Type
Output Impedance
Level Control
Power Requirements
Current Draw
Safety Features
Display LEDs
HM-4 4-Way Headphone Amplifier Dimensions
WEIGHT
0.5 lb
0.2 kg
+22 dB
Female 1/4" phono, unbalanced, stereo
10 k each channel, unbalanced
4x Female 1/4" phono, unbalanced, stereo
47 each channel, unbalanced
4x Rotating Phones Knobs
+12V DC
<220 mA, maximum
Top power on/off
2.3 in
58 mm
2.0 in
51 mm
Physical Properties
Height:
Width:
Depth:
Weight:
Disclaimer
Since we are always striving to make our products better by incorporating new
and improved materials, components, and manufacturing methods, we reserve
the right to change these specifications at any time without notice.
The "Running Man" figure is a registered trademark of LOUD Audio, LLC.
All other brand names mentioned are trademarks or registered trademarks
of their respective holders, and are hereby acknowledged.
©2018 LOUD Audio, LLC
All Rights Reserved.
4.3 in / 09 mm
2.0 in / 51 mm
4.3 in / 109 mm
2.3 in / 58 mm
0.5 lb / 0.2 kg
7
Owner's Manual
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