• 125 watts x 7 @ 8 ohms, 188 watts x 7 at 4 ohms
  • Full Balanced Topology
  • Completely symmetrical circuit design
  • Dual oversized toroidal transformers
  • 4 hand-graded output devices per channel
  • Advanced optically coupled protection for each channel


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 by 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.


7-channel Amplifier

Frequency Response

20Hz to 20kHz +0.1dB/-0.5dB; 10Hz to 40kHz +0.1dB/-1.5dB

Input Impedance

Minimum 10KOhms

Input Sensitivity

1V for 100W out @ 8 Ohms






19.5-inches (including handles) 17.12-inches (not including handles)


51 pounds (23.1 kg)



Rated Output Power into 4 ohms

188W RMS per channel into 4 Ohms from 20Hz to 20kHz

Rated Output Power into 8 ohms

125W RMS per channel into 8 Ohms from 20Hz to 20kHz

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


Greater than -80dB @ 1kHz (30kHz bandwidth)


Minimum 28dB

Power Requirements

120V 60Hz 12 Amp (domestic) 230V 50Hz 7 Amp (export)

Speaker Connections

7 pairs of heavy-duty, gold-plated binding posts

Included Accessories

Optional brackets are available for mounting the amplifier in a standard 19-inch equipment rack

Damping Factor

Greater than 200 @ 20Hz (ref 8 Ohms)