Matrix Audio HPA-3B User Manual
Page 2
Overview
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HPA-3B is a new member of the M-Stage series headphone amplifier, who is
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
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
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
grade capacitors, NORATEL toroidal transformer, precision non-inductive
resistance, every carefully chosen components to make HPA-3B not only
presents the perfect sound, but also a more stable and reliable working
status.