GSP Audio - Gram Amp 2 Communicator


Be the first to review this product

Availability: Available


Quick Overview

It may look cheap and plain but this little phono preamp is legendary for its audio performance! The Gram Amp 2 Communicator phono preamp is THE phono preamp that first made the GSP name synonymous with superior vinyl reproduction and incredible sound staging!


The Gram Amp 2 Communicator phono preamp will give an output of 400mV with a medium sensitivity moving magnet cartridge (4.5 to 5mV). Gain is X84 (38.5dB).

Intentionally, its gain is slightly on the low side which makes it most suited for use with medium to high output moving magnet cartridges. This also makes it an ideal phono preamp for the DJ whose disco records can give a much higher output - its lower gain means there's less chance of clipping (overload) so higher volumes can be achieved with reduced speaker wear. This is a truly excellent performer for the money and one would be hard pushed to better it.

Add the PSU1 option for significant further improvement - with it's much larger transformer you benefit from gains in bass weight, dynamics and resolution. The PSU1 is listed as an option when ordering.


Input Range2mV - 10mV
Output168 - 841mV for input range above
Maximum Input Level58mV
Input Impedance Resistive47k Ohms
Input Impedance Capacitive220pF
Output Noise('A' Weighted) -75dB
Reproduction CharacteristicRIAA within 0.5dB
Output Slew Rate7.5V/µS
Gain Bandwidth2.25MHz
Gain Margin19dB
Phase Margin78 degrees
Total Harmonic Distortion Plus Noise<0.02%
Channel Balance0.1dB
Channel Separation64dB
Size115 x 85 x 45mm (4.5 x 3.5 x 1.75 inches) approx.


  • Gram-Amp-2-Communicator-phoo-stage

Write Your Own Review

You're reviewing: GSP Audio - Gram Amp 2 Communicator

How do you rate this product? *

 1 star2 stars3 stars4 stars5 stars

Related Items


Origin Live Ltd. Unit 5, 362B Spring Road Sholing, Southampton SO19 2PB, UK