Parasound HCA-1500a

This is a two channel (bridgeable) power amplifier, designed by the infamous amplifier designer John Curl.

Sounds awesome - slight warmth to the sound with a detailed upper end. The front has a slight scratch, has no effect on sound quality. Amplifier can be setup for remote trigger from other A/V equipment.

Amplifier bias was recently re-calibrated and brought to factory specifications. Owner's manual is available from the Parasound website.

http://www.parasound.com/vintage/hca1500a.php

FEATURES
- Designed by John Curl
- THX certified by Lucasfilm Ltd.
- Independent power supplies for each channel
- Massive 1 kVA toroid power transformer
- 60,000 µF computer-grade capacitors in power supply
- Multiple 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

SPECIFICATIONS
- Continuous Power Output - Stereo:
205 Watts RMS x 2, 20 Hz-20 kHz, 8 Ω, both channels driven
315 watts RMS x 2, 20 Hz - 20 kHz, 4 Ω, both channels driven
- Continuous Power Output - Mono: 630 watts RMS, 20 Hz - 20 kHz, 8 Ω
- Current Capacity: 60 amperes peak per channel
- Slew Rate: > 130 V/µsecond
- Frequency Response: 5 Hz - 100 kHz, +0/-3 dB at 1 watt
- Total Harmonic Distortion: 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, THX Reference Level; 1.2 V for full output
- S/N Ratio: > 110 dB, input shorted, IHF A-weighted
- Damping Factor: > 800 at 20 Hz
- Power Consumption: 500 watts
- Dimensions: w 19" x h 5 1/4" x d 16", h 5 7/8" with feet
- Net Weight: 40 lb