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GSi75 Integrated
Amplifier
A Single Chassis Triumph
“Be prepared to fall in love with this amazing, high-end, one-box solution...this
one majors on insight and agility. It reveals the harmonic richness in the sound
of a piano and renders it with a subtlety of dynamics that’s hard to match at
anywhere near this price.”
For the person who cares deeply about music but refuses to compromise quality to fit in a small space, the
GSi75 may be perfection. Our design, engineering, and manufacturing teams collaborated to produce a single
chassis component unique unto itself and far more than the sum of its parts. Those wanting legendary Audio
Research quality can now rejoice; the GSi75 delivers on every level.
Combining pre- and power amplifier sections, an advanced digital-to-analog converter, a MM/MC phono stage,
and a tube-driven headphone section, the GSi75 does it all in one beautiful chassis. Feed it the source of your
choice and it will redefine your expectations of what can be achieved in its integrated design.
What Hi-Fi?, February 2017
The GSi75 is a sonic knockout, delivering wonderfully expansive sound that flows across a wide and deep
soundstage. All about neutrality, the GSi75 provides superb clarity and lifelike dynamics. Combining four
KT150 power output tubes with a robust power supply derived from the Reference 75, the GSi75 delivers
a powerful 75 watts per channel capable of driving all but the most inecient speakers with a finesse and
sophistication more common to our separate flagship components.
Performance and flexibility are paramount; Its advanced digital-to-analog converter with USB, optical and
coax digital inputs (all capable 384khz/32 bit along with DSD and DXD files), plus selectable digital filters and
upsampling, allow one to fine tune or not. The same is true for the phono stage’s selectable impedances and
gain. Perhaps best of all, parameters are easily adjusted from the comfort of your chair.
After nearly 50 years, our focus remains the advancement of the state-of-the-art in music reproduction. Every
component is meticulously hand-crafted and personally auditioned before it leaves our factory. Our attention
to detail, customer service, and product support create unprecedented value. An Audio Research component
is more than a purchase, it’s an investment.
For some, the GSi75 will be a destination component, for others it will provide a marvelous introduction into
the world of Audio Research. Some may even utilize the GSi75 as the anchor to a top-notch second system
in another room, perhaps an oce, or another residence. Whatever your reason for choosing the GSi75, it will
provide decades of musical enjoyment and satisfaction.
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Complete technical specifications can be found on our website.
S P E C I F I C A T I O N S
Power output
75 watts per channel continuous from 20Hz
to 20kHz. 1 kHz total harmonic distortion
typically 1.5% at 75 watts; 0.1% at 1 watt. (PEAK).
Approximate actual power available at “clipping” 63
watts RMS (1kHz)
Frequency response
(-3dB points at 1 watt) 4.0Hz to 70kHz
Input sensitivity
0.55V RMS Single-ended for rated output.
(32.5dBgain into 8ohms.)
Output taps
4, 8 ohms
Hum & Noise
Less than 1.0 mV RMS -88dB below rated output
(IHF weighted, Vol down)
Tube complement
2 - Matched pair KT150-Power Output;
2 - 6H30 driver
Power requirement
100 -125VAC 60Hz (200-250VAC 50/60 Hz) 450
watts at rated output, 625 watts maximum, 250
watts at “idle’:1.5 watt power off
Dimensions
Width: 19.0” (48.3 cm)
Height: 10.37” (26.3 cm)
Depth: 20.41” (51.8 cm)
Weight
55 lbs. (25.0 kg) Net.; 78 lbs. (35.4 kg) Shipping
3900 Annapolis Lane North | Plymouth, MN 55447 USA | T: 763.577.9700 | www.audioresearch.com
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