The HR-101-S is a compact and professional grade microphone amplifier
with stereo line-level mix that can be used as a stand-alone device, or
paired with the HR-101-R to extend audio over long distances on fiber
optic cables. The HR-101-S provides a balanced mic input on an XLR
connector as well as a stereo line level input on 3.5mm mini-stereo jack.
The unit has an adjustable-gain low noise mic preamp with a gain range of
+34 to +54 db (or x50 to x500) and provides indication of volume level on
digital VU meter on its front panel (to prevent saturation and clipping due
to too much gain). The unit accommodates a wide range of microphone
types. Phantom power can be inserted by means of a front panel switch.
The stereo line input is on a standard 3.5mm (1/8 inch) connector which
gets mixed with the amplified microphone signal.
In a typical application a presenter can hookup the audio from their PC to
the line input and plug the mic to the XLR. The unit will mix the speakers
voice with the PC audio.
The HR-101-S has both stereo analog (on 3.5mm) and SPDIF digital (on
RCA) outputs as well as a fiber-optic ST connector for driving long
cables to 3,280 ft. to compatible receiver.