Gram Amp 1 MkII Phono Pre Amplifier by HiAudio

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	Acoustic Solid Black Rhodium G.F.C. Hadcock Graham Slee Phono PreAmps: Revelation Jazz Club Reflex Era Gold Era Gold Intro Gram Amp 3 Fanfare Gram Amp 2 SE Gram Amp 2 Communicator Gram Amp 1 Bridge MC Head Amps: Elevator EXP Headphone Amps: Solo MC Solo Intro Voyager Power Supplies: PSU1 InVideo MetaVision NuForce Storm Audio The Cartridge Man Usher Audio

Gram Amp 1 "Bridge":

The Gram Amp 1 started life as "The Basic" as reviewed in the Gramophone magazine, 2001. As GSP Audio's first mass market phono stage, it was responsible for putting GSP Audio on the map. The MkII was a stunner, offering increased performance and better value for money, know finally the Gram Amp 1 Bridge has received a metal case and another sonic work over. Meeting the latest RoHS regulatory standards, the new "Bridge" is a little gem

Graham Slee Gram Amp 1 Bridge Phono stage Times and seasons change, markets diminish and regenerate; turntables are back. Why do the "high end" products always get the limelight? The new Gram Amp 1 with stylish livery and LED detail changes all of this, more importantly the tweaked internals, enhanced quality capacitors and further reduced noise floor make the new Gram Amp 1 really rock.

A fourth generation product, the Gram Amp 1 Bridge builds on the strengths of its forebears, and addresses its earlier weaknesses. Look at the reviews however, and you will see there weren't many weaknesses identifiable for its price, this is a remarkable phono pre amp and is well worth a listen.

For total immersion (in the music) an optional upgrade to the PSU1 power supply unit is available.

Technical Specification

Gram Amp 1 "Bridge"

Nominal Input sensitivity: 3 mV rms

Maximum input: 63 mV rms

Nominal output: 250 mV rms

Maximum output: 5.3 V rms

Gain: 38.5 dB (83)

Input resistance: 47 kOhms

Input capacitance: 100 pF

Output will drive: 10k Ohms

Noise: -78 dB CCIR q-pk 20Hz - 20kHz

Distortion: 0.02%

RIAA accuracy: 0.5 dB

Frequency response: 12.5Hz - 150kHz

Channel balance: 0.2 dB

Channel separation: 64 dB

Size: 100 (w) x 48 (h) x 76 (d) mm

The Gram Amp 1 phono pre amplifier requires a burn in period of at least 2 days from new to achieve its best performance.

Replacement UK wall plug power supply units are available to order.