Parasound HCA-1500A

Power Amplifier

Parasound HCA-1500A High Current Power Amplifier designed by John Curl

  • THX certified by Lucasfilm Ltd.
  • Independent power supplies for each channel
  • 1 kVA toroid power transformer
  • 60,000 µF computer-grade capacitors in power supply
  • Polystyrene film bypass capacitors in power supply
  • DC Trigger Auto On Feature
  • Cascoded Class A input stages with matched J-FET pairs
  • Handpicked complementary MOSFET transistors in high voltage driver stage
  • 8 complementary pairs of 15 ampere 50 MHz output transistors
  • Output transistors direct-coupled to speakers without LRC networks
  • DC servo direct-coupled audio circuits with 0.8 Hz rolloff
  • High-bias Class A/AB operation
  • Gold-plated metal structure RCA input jacks
  • Gold-plated looping output jacks
  • Multiple temperature sensors and silver-cadmium relay protection
  • Glass epoxy circuit boards, double-sided for precision
  • Custom designed audiophile-grade AC power cord
  • Multiple Protection Circuits
Period 1997 - 2004
Power Output (8Ω x 2) 205WRMS x 2, 20Hz-20kHz, both channels driven
Power Output (4Ω x 2) 315WRMS x 2, 20Hz-20kHz, both channels driven
Power Output (8Ω x 1) 630WRMS, 20Hz-20kHz
Frequency Response 5Hz – 100kHz / +0dB, -3dBat 1 watt
Damping Factor 80020Hz