Professional Audio

HPA-6 Six Channel Headphone Amplifier



This high powered and highly reliable headphone amp features two separate main stereo inputs on ¼” TRS stereo jacks, plus a stereo Auxiliary input feeding stations 1 and 2 – or, any combination of all six stations by simple internal re-wiring.

MTR HPA-6This Auxiliary signal is added to the main inputs, and can be used for click tracks, talkback from the control room for more effective communication between the engineer/producer and musicians, or silent rehearsing to an mp3 player/tablet/CD, etc.  It is also used for teacher-pupil communication in language laboratories.  A two-colour led is fitted to each of the three inputs, showing green for signal present, and red when approaching input overload.

MTR HPA-6 DetailThe Main Input 2 also has bass and treble boost and cut for greater clarity and control when overdubbing.  Each of the 6 headphone outputs has its own volume control, an input 1 or 2 selector button, and a mono switch sums the left and right signals.  The rear panel has duplicate input sockets for tidy wiring when  rackmounted.  Very solid all-steel construction, and volume is more than ample with headphones ranging from 8 to 2,000 Ohms impedance.


A,B & Aux input impedance:  20Kohms unbalanced stereo
A,B & Aux input sensitivity:   0.25 volts nominal
Max Output:   2v, 500mW into 8 Ω – 4.7v, 35mW into 600  Ω – 4.8v, 10mW into 2,000 Ω
High & Low e.q:  10kHz & 100Hz, ± 13dB.
System Gain:  28dB, e.q. flat.
Hum & Noise:  -88dB unweighted.
T.H.D.:  0.07% @ 1KHz
Freq. Response:   10Hz-20kHz ± 3dB
Max Consumption:  100mA
Dimensions:  44 x 483 x 205 mm
Weight:  4 Kilos