Parasound Halo A21+

Stereo Power Amplifier

Parasound Halo A21+

Stereo Power Amplifier
Was $4,399.00 From $2,999.00
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Overview

The Parasound Halo A21+ power amplifier delivers large amounts of power to drive even the most challenging loudspeakers.

  • 300 watts x 2 @ 8 Ω RMS, both channels driven
  • 500 watts x 2 @ 4 Ω RMS, both channels driven
  • 1000 watts x 1 @ 8 Ω, in bridged mode
  • Circuitry designed by legendary John Curl
  • High bias Class A/AB operation
  • 60 amperes peak current per channel
  • Stable with speaker impedance dips to 1.5 Ω
  • Balanced inputs with discrete circuits
  • CHK Infinium, custom 5-way speaker binding posts
  • Gold-plated RCA input & loop output jacks
  • Direct-coupled signal path, no capacitors or inductors
  • DC Servo and relay protection circuits
  • AC turn-on inrush surge protection with relay bypass
  • JFET input stage, MOSFET driver stage
  • 16 beta-matched 15 ampere, 60 MHz bipolar output transistors
  • 1.3 kVA shielded toroid transformer w/ independent windings for each channel
  • Independent power supplies for input stage, driver stage, and output stage
  • 108,000 µF filter capacitors for output stages
  • Full power is rated all the way down to 5Hz for unrestricted low-end bass
  • Harris hyper-fast soft-recovery bridge diode rectifiers
  • Automatic turn-on by 12 V trigger or audio sensing
  • 4 rack space chassis with rear carry handles
  • Rack mount hardware is included
  • Available in silver or black

Reviews

Customer Reviews

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D
Donald Wojtanowski

This amplifier is absolutely amazing!! I'm a huge fan of Parasound products. I started with the halo A-31. Next I purchased the A52+ both were really amazing. Which brings me to the A-21+. I've had this amplifier for about 2 weeks now, it's everything I had hoped for. Beautiful sound stage and dynamics. Bass is incredible. This amplifier really wakes your speakers up and lifts the veil. Will be getting more parasound products.... Highly recommended