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Adcom GFA-555SE 200 Watt Stereo Amplifier
    
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Adcom GFA-555SE

200 Watt Stereo Amplifier

  (1 Review)  
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Adcom GFA-555SE Stereo Amplifier
  • 200 watts per channel, 8 ohms
  • 300 watts per channel, 4 ohms
  • 600 Watts Bridged 8 ohms
  • 2.5 dB Dynamic Headroom
  • Tremendous Power Supply Capacity
Manufacturer's Description
The classic award winning amplifier design of the original GFA-555mkII has been reborn. Externally, the chassis footprint and front panel design are identical to the original.

Internally, all circuitry has been upgraded to meet 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 of these improvements is lower distortion, better dynamic range, improved damping factor, greater stability and separation of individual instruments on the soundstage.

REVIEW SNAPSHOT®

by PowerReviews
Adcom GFA-555SE 200 Watt Stereo Receiver
 
4.0

(based on 1 review)

Reviewed by 1 customer

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4.0

Review of power amplifier

By Nate-Dawg Bass Player

from Nashville, TN

About Me Musically Inclined, Professional, Tech Savvy

Verified Buyer

Pros

  • Clean Sound
  • Durable
  • Easy To Set Up
  • Good Power

Cons

  • None

Best Uses

  • Audiophiles
  • Home Theater

Comments about Adcom GFA-555SE 200 Watt Stereo Receiver:

Great amp!! Easy setup right out of the box...

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 General Features
 Stereo Power Rating (watts) 200
 Inputs / Outputs
 XLR (2) Rear Input
 Analog Audio (2) Rear Output, (2) Rear Input
 Speaker Terminals 5-Way Binding Post
 Dimensions
 Weight (Pounds) 36
 Depth (Inches) 12.1
 Height (Inches) 6.9
 Width (Inches) 16.9
Detailed Specifications:
Power Rating (To FTC Requirements)
  • 200 Watts continuous average power into 8 ohms at any frequency between 20Hz and 20kHz with both channels driven at less than 0..04% THD.

  • 300 Watts continuous average power into 4 ohms at any frequency between 20Hz and 20khz with both channels driven at less than 0.04% THD. *

  • 600 Watts continuous average power into 8 ohms at any frequency between 20Hz and 20kHz at less than 0..09% THD, bridged.


  • IM Distortion (SMPTE)
  • 1 watt to 200 watts into 8 ohms: = 0.009%

  • 1 watt to 300 watts into 4 ohms: = 0.009%


  • IM Distortion (CCIF, Any Combination from 4kHz to 20kHz)
  • 200 watts into 8 ohms: = 0.002%

  • 300 watts into 4 ohms: = 0.003%


  • THD + Noise at 200 watts into 8 Ohms (Typical)
  • 20Hz: 0.004%

  • 1kHz: 0.003%

  • 10kHz: 0.006%

  • 20kHz: 0.010%


  • THD + Noise at 300 watts into 4 Ohms (Typical)
  • 20Hz: 0.005%

  • 1 kHz: 0.004%

  • 10kHz: 0.015%

  • 20kHz: 0.025%


  • IM Distortion, Bridged (SMPTE)
  • 1 watt to 600 watts into 8 ohms: = 0.05%

  • 1 watt to 850 watts into 4 ohms: = 0.05%


  • IM Distortion (CCIF, Any Combination from 4kHz to 20kHz)
  • 600 watts into 8 ohms: = 0.005%

  • 850 watts into 4 ohms: = 0.005%


  • THD + Noise at 600 watts into 8 Ohms, Bridged (Typical)
  • 20Hz: 0.004%

  • 1kHz: 0.004%

  • 10kHz: 0.02%

  • 20kHz: 0.04%


  • Frequency Response @ I Watt into 8 Ohms
  • 10Hz to 20kHz: +0, -0.25dB

  • Power Bandwidth (-3dB): 10Hz to 100kHz

  • Dynamic Headroom Into 4 Ohms (1.7dB typical): 2.5dB

  • Signal to Noise Ratio, "A" Weighted

  • 200 watts into 8 ohms: = 110dB

  • Gain: 27dB

  • Input impedance: 10k ohms balanced; 100k ohms unbalanced
    * With supplemental cooling system. 14


  • Input Sensitivity
  • 200 watts into 8 ohms: 1.75V rms

  • 1 watt into 8 ohms: 130mV rms


  • Damping Factor
  • 2OHz to 2OkHz: = 900


  • Rise Time
  • 5kHz, 120V peak-to-peak square wave, 20% to 80%: 2.3µS


  • Power Consumption (Continuous, Both Channels Driven)
  • Quiescent: 72VA

  • Maximum: 1500VA

  • 200 watts into 8 ohms: 675VA

  • 325 watts into 4 ohms: 1180VA

  • 600 watts into 8 ohms, bridged: 1320VA


  • General
  • Power (available in 230V by special order): 120VAC—50/60Hz

  • Chassis Dimension: 6-15/16" (176mm) x 12-1/8" (308mm) x 16-15/16" (430mm)

  • Maximum Dimensions: 7-1/2" (191mm) x 12-1/2" (318mm) x 17" (432mm)

  • Weight: 36 lbs. (16.3kg)

  • Weight, Packed: 40 lbs. (18.1kg)

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