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Audio Research GSi75 Integrated Valve Amplifier Announced


The GSi75 is much more than a simple integrated amplifier, it is a one-box solution that includes both a high performance DAC and phono stage; all you need is a digital source, a turntable, and speakers. And, with its terrific tube headphone section, you don’t even need the speakers, just a set of ‘phones.

The DAC in the GSi75 is our most advanced design, handling digital sampling rates up to 384kHz and DSD 1x and 2x, in both native and DoP formats via USB 2.0. True, native DSD bitstreams are resolved with no PCM conversion. In addition to the USB input, the GSi75 also has Toslink and RCA inputs. Fast and Slow filters are selectable, as is Upsampling to 352kHz or 384kHz. A separate driver is not required for Mac.


The phono section has switchable 45dB or 62dB gain for use with MM or MC cartridges. Input impedance is selectable (47k, 1000k, 500, 200 or 100 ohms) via the front panel or the remote. In addition to the digital and phono inputs, there are three other SE inputs, one of which can be configured as a home theatre passthrough. The GSi75 has an IR input, and is also controllable via RS-232. The GSi75 has two 6H30 driver tubes and four KT150 output tubes that should last 3,000 hours. There are 4- and 8-ohm speaker outputs.

The GSi75 is a sonic knockout, with clarity, dynamics and the same engaging immediacy that you have come to expect from the GSPre and GS150. Visually, it has the same elegant aesthetic as its siblings, featuring a welded, hand-finished, brushed aluminium chassis, matte black transformer cover, black side handles, and a removable (perforated black) tube cage.


The Audio Research GSi75 integrated valve amplifier is available now, priced at £14,500 inc. VAT.

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