• 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)

• 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

HCA855A Manual

HCA855A Education Pack