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OVERVIEW
The Glensound Signature Series HA1M is a professional two mono input headphone
amplifier. It is manufactured using high quality components and low noise audio circuits to
provide many years of trouble free use.
Although traditionally a broadcast manufacturer, Glensound’s products are equally at home
in professional and high end home studios, industrial installations and live pro sound
environments. The HA1M can therefore be used in a number of applications.
It features two electronically balanced mono inputs on Neutrik XLRs each with its own front
panel gain control, one advanced signature stereo headphone amplifier and one
electronically balanced ‘mix’ output. The advanced signature headphone amplifier features a
unique facility which provides consistent audio output levels into both high and low
impedance headphones. This advanced stereo headphone amplifier can also automatically
accept mono headphone jacks meaning that mono earpieces can be used directly without
needing to re-wire cables.
It is possible to connect the balanced audio inputs & outputs to domestic style unbalanced
audio circuits and the preset gain controls provide sufficient output level adjustment to allow
this.
For added flexibility the HA1M has a front panel ‘mono’ switch. Using this switch mixes both
the left and right inputs together and then sends the mono mix to both left and right outputs
of the stereo headphone amplifier.
The HA1M is powered from an internal switch mode mains power supply fed from a filtered
IEC mains plug suitable for use Worldwide. It has an internal fuse for safety. The unit can also
alternatively be powered from an ex/-12V DC power source (such as the Signature
Series PS1). If both mains and external DC power sources are present then, if one power
source were to fail the unit would continue to work seemlessly from the other source.
