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Parasound A21 power amplifier


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Item Condition: Used
Shipping Options: Pickup available and you can audition.
Suburb or Town: Revesby
State: NSW
Payment Method: Cash
Reason for selling: Upgrading

Further Information

Continuous power output:
250 watts RMS x 2, 20 Hz - 20 kHz, 8 Ω, all channels driven
400 watts RMS x 2, 20 Hz - 20 kHz, 4 Ω, all channels driven
750 watts RMS x 1, 20 Hz - 20 kHz, 8 Ω

Current capacity:
60 amperes peak per channel

 

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

 

Total harmonic distortion:
< 0.2 % at full power

 

Damping factor: > 1100 at 20 Hz

 

Circuitry designed by legendary John Curl

THX Ultra2 certified

High bias Class A/AB operation

Balanced inputs with discrete circuits and XLR connectors

Direct Coupled - no capacitors or inductors in signal path

Complementary MOSFET driver stage and JFET input stage

16 beta-matched 15 amp, 60 MHz bipolar output transistors

1.2 kVA encapsulated toroid power transformer with independent secondary windings for each channel

88,000 µF power supply filter capacitance

DC Servo and relay protection circuits

AC present, channel status, high temperature indicators

Heavy-duty 24k gold-plated 5-way speaker terminals

Gold-plated RCA input jacks; ground lift switch

Auto turn-on by 12v trigger or audio signal, 12v trigger out

 

 IMG20220605150057_01.thumb.jpg.86b23dc03f08b27b41291efb2744e8c8.jpg
 

IMG20220605150026.jpg

A21 rear.jpg

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