Equipped with an over-sized toroidal transformer and individual power supplies for each of its seven channels, the GX-7 combines considerable output with quiet, low-distortion operation. Because each channel has its own power supply, the GX-7 has significantly improved channel separation. Intended for systems where the additional output of the RX-7 or the ZX-7 is not necessary, the GX-7 - with 125 watts per channel into 8 ohms - has more than enough power to drive most multi-channel speaker systems. When driving a 4 ohm load, the output of the GX-7 increases to an impressive 188 watts per channel.

In order to facilitate easy system integration, the GX-7 includes a 12-volt trigger input on the rear panel so that it can be powered up remotely buy a separate device with an output trigger, such as a Lexicon Digital Controller. A rack mount is also available.

With its clean, quiet power, the GX-7 serves as an exceptional addition to any multi-channel home entertainment system.


Description 7-channel Amplifier
Inputs 7 RCA
Speaker Connections 7 pairs of heavy-duty, gold-plated binding posts
Rated Output Power into 8 ohms 125W RMS per channel into 8 Ohms from 20Hz to 20kHz
Rated Output Power into 4 ohms 188W RMS per channel into 4 Ohms from 20Hz to 20kHz
Frequency Response 20Hz to 20kHz +0.1dB/-0.5dB; 10Hz to 40kHz +0.1dB/-1.5dB
Signal-to-Noise Ratio Greater than 100dB, ref 125W/8 Ohms (30kHz bandwidth)
Total Harmonic Distortion (THD) Less than 0.05% at full power ratings
Crosstalk Greater than -80dB @ 1kHz (30kHz bandwidth)
Damping Factor Greater than 200 @ 20Hz (ref 8 Ohms)
Input Sensitivity 1V for 100W out @ 8 Ohms
Gain Minimum 28dB
Input Impedance Minimum 10KOhms
Power Requirements 120V 60Hz 12 Amp (domestic) 230V 50Hz 7 Amp (export)
Height 5"
Width 16.2"
Depth 19.5-inches (including handles) 17.12-inches (not including handles)
Weight 51 pounds (23.1 kg)
Included Accessories Optional brackets are available for mounting the amplifier in a standard 19-inch equipment rack

©2014 Harman International Industries, Inc.