Parasound HCA-750-A Brochure

High Current Amplifiers

Parasound’s High Current Amplifiers offer explosive power with uncompromised sound quality. Our focus

on a high current/high bias design influenced by John Curl, utilizes complimentary discrete circuitry to assure

every watt is crystal clear and available for crisp vocals, magnificent explosions, and dynamic music. Each amplifier

features 12 volt DC triggers, gain controls, and bullet-proof protection for ease of use and peace of mind. Give us

the most demanding music or the most action packed soundtrack, and you will love what you hear.

Features

High bias Class A/AB operation

Direct coupled - no capacitors or inductors in signal path

Input stage uses hand matched complementary JFETs

8 beta-matched 15 amp, 50 MHz bipolar output transistors

500 VA toroid power transformer with

 independent secondary windings for each channel

28,000 mF power supply filter capacitance

Independent power supplies for each channel

DC Servo and relay protection circuits

AC present, standby/normal, current overload indicators

Gold plated RCA input jacks, loop output jacks

12 volt DC automatic turn-on circuitry

Heavy duty 24k 5-way speaker binding posts

Rear mounted gain controls; ground lift switch

Rack mounting adapter available

Parasound’s 10 years parts, 5 years labor warranty

Specifications

Continuous power output:

 75 watts RMS x 2, 20 Hz - 20 kHz, 8W, both channels driven

 125 watts RMS x 2, 20 Hz - 20 kHz, 4W, both channels driven

 250 watts RMS x 1, 20 Hz - 20 kHz, 8W

Current capacity: 20 amperes peak per channel

Power bandwidth: 5 Hz - 100 kHz, +0/-3 dB at 1 watt

Total harmonic distortion: < 0.06 % at full power

IM distortion: < 0.04 %

Slew rate: > 130 V/msecond

Dynamic headroom: > 1.5 dB

Interchannel crosstalk: > 80 dB at 1 kHz; > 63 dB at 20 kHz

Input sensitivity: 0.775 V for full output

Input impedance: 33 kW

S/N ratio: > 110 dB, full power, input shorted, IHF A-weighted

Damping factor: > 800 at 20 Hz

Dimensions: 17-1/4" w x 4" h x 13-1/4" d, 3-1/2" h without feet

Net weight: 18 lbs.

Parasound Products, Inc. 950 Battery Street, San Francisco, CA 94111

415-397-7100 / FAX [phone] www.parasound.com