Parasound Halo Power Amplifiers (A21, A23, A31, A51)


When it comes to high-performance, high-value power amplifiers, few do it better than Parasound.

Availability: US & Canada, in conjunction with consulting services

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About the product


Parasound's Halo amplifiers offer superb sound quality thanks to the design skills of the legendary audio designer John Curl and the use of balanced, high bias class A/AB topological.

The high bias design and use of a direct coupled FET input / driver stages with bipolar output stage gives these power amps a sweet and warm sound. They work particularly well with Procella Audio speakers, our go-to brand for high performance home theater.

Parasound got it right the first time with these amps, and they have been in continuous production for over 10 years. If you are looking for a beefy power amp, you can't go wrong with a Halo.

Here's the current model line-up:

  • A23, 125W/Ch, 2 Ch.
  • A21, 250W/Ch, 2 Ch.
  • A31, 250W/Ch, 3 Ch.
  • A51, 250W/Ch, 5 Ch.


    • THX Ultra certification
    • John Curl designed
    • High bias class A/AB design with discrete circuitry
    • Switchable XLR and RCA inputs with adjustable gain per input
    • Warranty: 5 years

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