• Circuitry designed by John Curl
• THX Ultra-certified
• Direct Coupled -- no capacitors or inductors in signal path
• DC Servo and relay protection circuits
• High bias Class A/AB operation
• 1.6 kVA Toroid power transformer with independent secondary windings for each channel, 100,000 µF power supply filter capacitance
• Independent power supplies for each channel
• Input stages use hand matched complementary JFETs
• 30 beta-matched 15 amp, 50 MHz bipolar output transistor
• AC present, standby/normal, current overload indicators
• Rear mounted gain controls and rear handles
• 12 volt DC automatic turn-on circuitry; ground lift switch 
• Tiffany-style RCA input jacks
• Gold-plated 5 way speaker binding posts
• Custom designed removable IEC AC cord
• 3 rack space height front panel
• Rack mounting adapter available

• Continuous Power Output
  > 140 x 3 watts per channel at 8 Ω
  > 200 x 3 watts per channel at 4 Ω
• Lucasfilm THX ® Home Cinema approved
• Current Capacity
  45 amps peak current per channel, DC servo control
  18 Beta-matched 15 amp 60 MHz Bipolar outputs
• Direct coupled
  no capacitors or inductors in signal path
• Rear mounted gain controls
• Matched JFET Inputs, less than 0.1% THD
• 1.5kVA power transformer, 90,000 µf
• Power supply
  Current overload indicators
  Removable IEC AC cord
  Gold plated 5 way binding posts, tiffany-style jacks
• High powered 5 channel THX amplifier
• Modular Channel design
• 12 Vdc Automatic-on trigger circuitry

HCA 1203A/1205A Manual