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The GFA 5400 replaces the GFA 545II and offers many of the same design features and sonic attributes of the enthusiastically received GFA 5800 and GFA 5500. The specifications should adequately describe all the pertinent information, including the increased power output into 8 and 4 ohms over the GFA 545II. As the 4 ohm power indicates, the current capability of the GFA 5400 has been substantially increased. The improvements are clearly audible with virtually all loudspeaker systems and will be apprecaited by all who will use multiple 5400s in home thaeater systems.

With a 33% increase in power at 4 ohms, you might expect a substantial price increase. No way. In order to offer increased value, the suggested retail price will increase less than 10% (over the GFA 545II) to only $679.95.


Power Rating (To FTC Requirements)
125 watts continuous average power into 8 ohms: 20Hz and 20kHz with both channels driven at less than 0.18% THD
200 watts continuous average power into 4 ohms: 20Hz and 20kHz with both channels driven at less than 0.18% THD

IM Distortion (SMPTE)
l watt to l25 watts into 8 ohms.....<0.05% 1 watt to 200 watts into 4 ohms.....<0.05%

IM Distortion (CCIF, Any Combination from 4kHz to 20kHz)
125 watts into 8 ohms.....<0.035%
200 watts into 4 ohms.....<0.035%

THD + Noise at 125 watts into 8 ohms (Typical)
1 kHz.....0.02%
10 kHz.....0.07%
20 kHz.....0.14%

THD + Noise at 200 watts into 4 ohms (Typical)
20 Hz.....0.018%
10 kHz.....0.08%
20 kHz......0.185%

Frequency Response at 1 watt into 8 ohms (10Hz to 20kHz).....+0, -0.25dB

Power Bandwidth (-3dB).....3Hz to 130kHz

Dynamic Headroom Into 4 ohms.....1.7dB

Signal to Noise Ratio, "A" Weighted (125 watts into 8 ohms) .....> 100dB


Input Impedance.....49.9K ohms

Input Sensitivity
for 1 Watt output.....0.1 volts
for 125 Watts output.....1.125 volts

Damping Factor (20Hz to 20 kHz).....>500

Rise Time (5kHz, 90 V peak-to-peak square wave, 20% to 80%).....1.9 us

Power Consumption (Continuous, Both Channels Driven)
125 watts into 8 ohms.....580VA
200 watts into 4 ohms.....920VA


Power (Available in 230VAC by special order).....115VAC - 50/60Hz

Chassis Dimensions.....5" (127mm) x 17" (432mm) x 11 1/2" (292mm)

Maximum Dimensions.....5 3/8" (137mm) x 17" (432mm) x 12 1/2" (375mm)

Weight.....20 lbs. (11.8kg)

Weight Packed.....30 lbs. (13.6kg)

Specification subject to change without notice.

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