- Direct coupled - no capacitors or inductors in signal path
- DC Servo and relay protection circuits
- High bias Class A/AB operation
- 1 kVa Toroid power transformer with independent secondary windings for each channel, 68,000 µF power supply filter capacitance
- Independent power supplies for each channel
- Input stages use hand matched complementary JFETs
- 20 matched 15 amp, 50 MHz bipolar output transistors
- AC present, standby/normal, current overload indicators
- Rear mounted gain controls and rear handles
- 12 volt DC automatic turn-on circuitry Gold-plated metal structure RCA input jacks
- Gold-plated 5 way speaker binding posts
- Custom designed removable IEC AC cord
- Three rack space height front panel
- Rack mounting adapter available (RMK-3)
Vintage HCA855A
Features
Specifications
- Continuous Power Output:
85 watts RMS x 5, 20 Hz-20 kHz, 8 Ω
125 watts RMS x 5, 20 Hz-20 kHz, 4 Ω - Current Capacity:
30 amps peak per channel - Slew Rate:
> 130 V/microsecond - Power Bandwidth:
5 Hz-100 kHz, +0/-3 dB at 1 watt - Total Harmonic Distortion:
IM Distortion:
TIM:
Unmeasureable - Dynamic Headroom:
> 1.5 dB - Interchannel Crosstalk:
> 80 dB at 1 kHz
> 60 dB at 20 kHz - Input Impedance:
33 k Ω - Input Sensitivity:
1 V for 28.28 V 1.2 V for full output - S/N Ratio:
> 115 dB, full power, IHF A-weighted - Damping Factor:
> 800 at 20 Hz - Dimensions:
17" wide x 5 1/4" high x 16" deep (6" high with feet) - Power Requirements:
110 Vac-120 Vac 750 Watts - Net Weight:
41 lb
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