Matrix Audio HPA-3B User Manual

HPA-3B

EN

Manual

www.matrix-digi.com

Over view

HPA-3B is a new member of the M-Stage series headphone amplifier, who is

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the first one full-balanced design of the headphone amplifier, supports
both single-ended output and differential output, use the adaptor plug to
be worked in a single-ended input mode, maximizing the performance of
the headphones.

Full-band of THD + N less than 0.0003%, SNR up to -114dB, bandwidth not

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less than 140k at -3dB gain, 0.4Ω , three gain level options to fit for the
different impedance and sensitivity headphone, all of these excellence
performance improvements to be born the brand new HPA-3B!

Excellent structural design to quickly dissipate the heat of power tube via

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the shell, full symmetric circuit layout, fully differential signal path
amplification, driver stage is the precision constant current source, the
precision quad-unit potentiometer volume control, all above features to
make it has a better dynamic range and details than a single-ended
headphone amplifier.

The customized ALPS volume potentiometer, WIMA and NICHICON audio

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grade capacitors, NORATEL toroidal transformer, precision non-inductive
resistance, ever y carefully chosen components to make HPA-3B not only
presents the per fect sound, but also a more stable and reliable working
status.

1

The Front Panel

Balance Headphone Jack

Single-ended Headphone Jack

Working LED Indicator

Volume Knob

2

The Rear Panel

Gain Switch

Left Channel XLR Analog Input

Right Channel XLR Analog Input

Power Switch

AC Power Input

3