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.

"Together, the Parasound P 6 and A 23+ are dynamite," raves Roy Ervin Solstad, Stereo+ (Norway), January 2019. "Pure sonic magic with brilliant dynamics, delicious midrange and impressive resolution. To get such good sound for the price of this duo seems almost unnatural. One incredibly appealing preamp-amplifier package from Parasound."

Specifications and Features:

A23+ Performance Upgrades

• Power up 25-30%
• Filter capacitance up 20-30%
• 10-15% Larger main power transformer
• Upgraded internal gold on gold audio connections (cleaner signal path and more reliable)
• Tweaked input circuits for Improved Crosstalk specs
• Improved power supply for lower distortion at full power
• Filter capacitance: 54,400 uF
• Transformer size: 1.1kVA

Revised Halo Front Panel Cosmetics

• Slim metal end caps replace wider plastic end caps
• Added gold metallic accent stripe along end cap
• Engraved metal PARASOUND badge replaces the red P
• Gold feet now on black units

Revised Rear Panel Layout and Features

• Upgraded speaker terminals (A23+ gets HINT 6 terminals)
• New jack/terminal layout with more space and more clear text/labels
• 2.5mm trigger jacks replaced with 3.5mm jacks
• Audio trigger circuit has been updated for better low signal reliability
• Master AC "vacation" switch on the rear panel

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

Power Output – Stereo Mode (0.9% THD)

• 210 watts x 2, 8Ω both channels driven
• 300 watts x 2, 4Ω both channels driven

Power Output – Bridged Mode (0.9% THD)

• 600 watts x 1, 8Ω
• Bridged 4 Ω operation is not recommended
• All Power measurement are at 120 VAC, RMS continuous power, full audio band (20 Hz - 20 kHz)

Current Capacity

• 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

IM Distortion

• < 0.04%

TIM

• Unmeasurable

Interchannel Crosstalk

• > 85dB at 1kHz
• > 70dB at 20kHz

Input Impedance

• Unbalanced: 33kΩ
• Balanced: 66kΩ,(33kΩ per leg)

Total Gain

• 29dB

Input Sensitivity for 28.28V Output into 8 Ω

• Unbalanced: 1 V
• Balanced: 1V per leg

S/N Ratio

• > 112dB, input shorted, IHF A-weighted
• > 107dB, input shorted, unweighted

Damping Factor

• > 800 at 20 Hz

Power Requirement

• Standby: 1 Watt
• Idle (no music playing): 75 Watts
• Typical Listening levels: 3125 Watts
• Maximum: 800 Watts

Physical

• Width: 17-1/4"
• Depth: 15”-1/4”
• Depth, with cables 17”
• Height, with feet: 4-1/8”
• Height, without feet: 3-1/2”, 2U
• Weight: 27 lbs.