Five Channel Home Theater Amplifier

The GFA-5705 amplifier can drive a broad range of loudspeakers, including those with very low impedances, at sustained high-power levels, even when the impedances are highly reactive. Great care was taken to ensure that the distortion in the amplifier would remain extremely low.

The power supply in the GFA-5705 has enormous reserve with an extremely large transformer feeding a storage bank of 30000uF per channel & total of 150,000uF of filter capacitance. The transformer itself was designed for extremely good regulation, insuring stable voltages regardless of the power demands from the amplifier. Its higher efficiency was insured by using a toroidal design.

  • Balanced XLR & unbalanced RCA inputs
  • 200 watts per channel, 8 ohms
  • 300 watts per channel, 4 ohms
  • Large outside double heatsinks
  • Auto ON/OFF with 12V Trigger
  • Covered 24k gold plated 5-way speaker terminals


  • THD+Noise @ 200 Watts into 8 ohms all channels driven a 1kHz:  0.008%
  • THD+Noise @ 300 Watts into 4 ohms all channels driven a 1kHz:  0.01%
  • Frequency Response:  10Hz to 20kHz, +0 - 0.25dB
  • Power Bandwidth:  -3dB, 5Hz to 100kHz
  • Dynamic Headroom @ 4 ohms:  1.2dB
  • Signal-to-Noise Ratio, "A" Weighted, 200 Watts into 8 Ohms:  >106dB
  • Gain:  27dB
  • Input Impedance: 22k ohms
  • Input Sensitivity (200 watts into 8 ohms):  1.8V rms
  • Damping Factor:  >300
  • Power: 120V AC 50/60 Hz, Max power consumption 2000VA

Dimensions:  8 3/4" x 17" x 17 3/4" with rear carry handles
Warranty: 2 yr. limited manufacturer

Rack mounting: If the rack is mounted, the amplifier must be put on a shelf. Rack mounting brackets are NOT available for this amplifier.

All circuitry meets ETL/ETLc, FCC, LVD and CE/EMC requirements using UL approved FR-4 printed circuit boards. High performance component selections include ultra-low ESR electrolytic capacitors. The result is lower distortion, better dynamic range, improved damping factor and greater stability and separation of individual instruments on the sound stage.

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SHIPPING: The shipping weight of the GFA-5705 is 96 lbs. Shipment by FedEx Ground/Insured is FREE if your shipping address is within the 48 continental states. If your delivery address is in Alaska, Hawaii, Canada, or other location outside of the USA, please call (480-607-2277) or email to determine the shipping cost and to place your order.  Duties, taxes and fees on shipments to destinations outside of the USA are NOT included in the price.