Parasound Halo A23+ Stereo Power Amp





For your consideration a mint Parasound Halo A23+ Power Amp.  Original box and shipping materials.  This amp is powerful and detailed.  You will not be disappointed!!


To purchase contact us for a discounted shipping quote@ (763) 575-7447 or

Parasound already brings listeners heavenly sound, but its halo now shines more beautifully than ever with its brand new version of the Halo A 23 two-channel power amplifier. Meet the Halo A 23+ and enjoy performance upgrades for cleaner, ultra-low distortion sound, revised front panel cosmetics, and a revised rear panel layout offering enhanced features, too.     

Advanced John Curl-Designed Circuitry

The circuitry of the A 23 was engineered by legendary audio designer John Curl. Its direct-coupled topology uses no capacitors or inductors in the signal path for pure, uncolored sound. Balanced inputs with discrete circuits and XLR connectors yield dead quiet operation. The complementary JFET input stage and MOSFET drive stage incorporates 12 beta-matched 15 amp, 60 MHz bipolar output transistors for pristine sound. The high-bias “Class A”/”Class AB” operation blends best sound with highest efficiency performance.
The A 23’s custom-made, high-current power supply is specially designed for exceptionally quiet operation along with ample power for climactic music passages. The 1.1KVA encapsulated toroidal power transformer uses independent secondary windings for each channel along with a 54,400 µF power supply filter capacitance. DC servo and relay protection circuits keep operation safe and reliable.y.

Instant Warm-up’Feature

Like all the other amps in the Halo product series, the A 23+ has Parasound’s exclusive bias circuit, which permits the amplifier to sound perfect from the instant it’s turned on, rather than having to wait for bias to gradually build up as the amp warms up over time. Even Halo’s implementation of its automatic turn-on feature is exceptional. Special relays bypass the AC “soft start” circuitry after it’s done its job for the purest AC and the purest sound.

Power Output – Stereo Mode (0.06% THD)
 160 watts x 2, 8Ω both channels driven
 240 watts x 2, 4Ω both channels driven
Power Output – Bridged Mode (0.06% THD)
 500 watts x 1, 8Ω
 Bridged 4 Ω operation is not recommended
 45 amps peak, per channel
Slew Rate
 > 130 volts per microsecond
Frequency Response
 5Hz – 100kHz, +0/-3dB 20Hz – 20kHz, +0/-0.25dB
Total Harmonic Distortion (THD)
 < 0.06% at full power
 < 0.03% at typical listening levels

Return Policy

All units are sold with a 90 day warranty period in which you can exchange them for full the purchase price (less any shipping charges) towards any other unit we have in stock. Any unit which proves to be defective within ten days of delivery can be exchanged for the same model or a suitable replacement. In the event a replacement unit is not available, we will refund the purchase price. We will pay the shipping costs for replacement merchandise. Any non-defective merchandise returned for credit will be subject to a 15% restocking charge, with the buyer paying all shipping charges. Please call us at (763) 575-7447 for a return authorization number. No returns will be accepted without a valid return authorization number.
Equipment must be repacked exactly as it was packaged when it was originally shipped to you; all packing materials intact double boxed, etc., in order to avoid shipping damage. Equipment initially returned as defective, where the defect cannot be verified, will incur a 15% restocking char