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GFA-5400
AdcomAmplifiersPower AmplifiersDiscontinued
Estimated price (community-sourced)
$275
Around — community and catalog average, updates slowly
About the GFA-5400
The GFA-5400 is a two-channel, high-current solid-state power amplifier designed to drive loudspeakers with nominal impedances down to 4 ohms. It is rated to deliver 125 watts per channel into 8 ohms and 200 watts per channel into 4 ohms, with both channels driven across the 20 Hz–20 kHz range. It uses unbalanced RCA inputs and has a 29 dB gain, a damping factor greater than 500, and a 49.9 kΩ input impedance.
Specifications
Type: Stereo power amplifier; Channels: 2; Continuous power output (both channels driven): 125 W/channel into 8 Ω, 200 W/channel into 4 Ω (20 Hz–20 kHz, less than 0.18% THD); Frequency response: +0/−0.25 dB (10 Hz–20 kHz, at 1 W into 8 Ω); Power bandwidth (−3 dB): 3 Hz–130 kHz; Gain: 29 dB; Input impedance: 49.9 kΩ; Input sensitivity: 0.1 V for 1 W, 1.125 V for 125 W; Signal-to-noise ratio: greater than 100 dB (A-weighted); Damping factor: greater than 500; Dynamic headroom: 1.7 dB into 4 Ω; Inputs: unbalanced RCA; Power: 115 V AC, 50/60 Hz; Dimensions: 17 × 5 × 11.5 in (432 × 127 × 292 mm) chassis; maximum dimensions 17 × 5.375 × 12.5 in (432 × 137 × 318 mm); Weight: 26 lb (11.8 kg).