GX636 vs Revox B77
The B77's signal-to-noise is 67 dB against the GX636's 75 dB, its thd 0.500% against 0.400%, its output voltage 1.6V RMS against 0.8V RMS, and its weight 17 kg (37 lbs) against 21 kg (46 lbs).
AI-generated product photo — not official manufacturer imagery.
AnalogReel-to-ReelDiscontinued
Estimated price (community-sourced)
$1,500
Around — community and catalog average, updates slowly
About the GX636
The Akai GX-636 is a high-end, 4-track, 2-channel stereo/monaural reel-to-reel tape deck, manufactured in Japan between 1980 and 1984. It features Akai's renowned GX heads—made from low-noise crystal ferrite and super-hard glass—for exceptional durability and sound quality. The deck offers auto-reverse operation, both-way recording, and playback, enabled by a symmetrical 6-head block (2 record, 2 playback, 2 erase). The transport system uses three independent motors (capstan, supply reel, take-up reel) for precise tape handling and minimal wow & flutter. Additional features include Dolby B noise reduction, pitch control, timer start, bias adjustment, and a wired remote control option. The GX-636 is known for its robust build, stable performance, and long-term reliability, making it a favorite among audiophiles and recording enthusiasts.
Specifications
Analog Output
Analog signal output specifications
- THD
- 0.400%
- SNR
- 75 dB
- Output Voltage
- 0.8V RMS
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
- Analog Inputs
- Line, DIN, Microphone
- Analog Outputs
- Line, DIN, Headphone
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 440 × 256 × 483 mm (W × H × D)
- Weight
- 21 kg (46 lbs)
- Available Colors
- Silver with wooden sides, Black
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions