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Austin's TV & Home Theater Store Since 1967

Parasound A23

A 23+ Stereo Power Amplifier


Halo Collection

Quick Specs

  • Type: Amplifier
  • Width: 17 1/4"
  • Height: 4 1/8"
  • Depth: 13 1/4"
  • Energy Star Rated: No
 
Changes from the original A 23 A 23+
  • 125 160 Watts (8 )
  • 225 240 Watts (4 )
  • 400 500 Watts (bridged)
  • Filter cap: 40,000 uF 54,400 uF
  • Crosstalk (20kHz): 63dB 70dB
  • Transformer size: 1.0 kVA 1.1 kVA
  • Refined Halo cosmetic with aluminum end caps & gold highlights
  • Updated rear panel with heavy duty speaker terminals from HINT 6
  • Upgraded internal gold on gold audio connections
  • Updated auto turn on circuit
All Features
  • 160 watts x 2 @ 8 RMS, both channels driven
  • 240 watts x 2 @ 4 RMS, both channels driven
  • 500 watts x 1 @ 8 , in bridged mode
  • Circuitry designed by legendary John Curl
  • High bias Class A/AB operation
  • 45 amperes peak current per channel
  • Stable with speaker impedance dips below 2
  • Balanced inputs with discrete circuits
  • Heavy-duty 24k gold-plated 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
  • 12 beta-matched 15 ampere, 60 MHz bipolar output transistors
  • 1.1 kVA shielded toroid transformer w/ independent windings for each channel
  • Independent power supplies for input stage, driver stage and output stage
  • 54,400 F 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
  • 2 rack space chassis with rear carry handles
  • Rack mount hardware available separately
  • Available in silver or black
Power Output - Stereo Mode (0.06% THD) 160 watts x 2, 8 both channels driven
240 watts x 2, 4 both channels driven
Power Output - Stereo Mode (0.9% THD) 210 watts x 2, 8 both channels driven
300 watts x 2, 4 both channels driven
Power Output - Bridged Mode (0.06% THD) 500 watts x 1, 8
Bridged 4 operation is not recommended
Power Output - Bridged Mode (0.9% THD) 600 watts x 1, 8
Bridged 4 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 5 Hz - 100 kHz, +0/-3 dB
20 Hz - 20 kHz, +0/-0.25 dB
Total Harmonic Distortion (THD) < 0.06 % at full power
< 0.03 % at typical listening levels
IM Distortion < 0.04 %
TIM Unmeasurable
Inter-channel Crosstalk > 85 dB at 1 kHz
> 70 dB at 20 kHz
Input Impedance Unbalanced: 33 k
Balanced: 66 k ,(33 k per leg)
Total Gain 29 dB
Input Sensitivity for 28.28 V Out (8 Load) Unbalanced: 1 V
Balanced: 1 V per leg
S/N Ratio > 112 dB, input shorted, IHF A-weighted
> 107 dB, input shorted, unweighted
Damping Factor > 800 at 20 Hz
DC Trigger Requirements +9 Vdc to +12 Vdc, 5 mA
Audio Trigger Requirements 2 mV - 10 mV
XLR Pin Identification 1 = Ground (Shield)
2 = Positive
3 = Negative (Return)
Dimensions Width: 17-1/4" (437 mm)
Depth: 15"-1/4" (388 mm)
Depth, with cables 17" (432 mm)
Height, with feet: 4-1/8" (105 mm)
Height, without feet: 3-1/2" (89 mm), 2U
Net Weight 27 lb. (12.2 kg)
Shipping Weight 34 lb. (14.4 kg)
Power Requirement Standby: <1 Watt
Idle (no music playing): 75 Watts
Typical Listening levels: 125 Watts
Maximum: 800 Watts
110-125 VAC 60 Hz or 220-250 VAC 50 Hz
AC mains voltage is set on rear panel

Quick Specs


  • Appearance

  • Type: Amplifier

  • Dimensions

  • Width: 17 1/4"
  • Height: 4 1/8"
  • Depth: 13 1/4"

  • Features

  • Energy Star Rated: No

Professional delivery and installation is available for every product we sell. We would be happy to coordinate delivery and installation for you.

Extended warranties are usually very inexpensive and can save you thousands in the future. It's simple and inexpensive to purchase extended warranties and one of the smartest ways to protect your investment.

Electronics can be large, heavy and expensive. You probably don't have the special tools or expertise needed to fix them in a crisis. If you can spare a few thousand dollars without batting an eyelash for new electronics should they break tomorrow, don't buy a warranty. But if you're like most of us, protect yourself by purchasing inexpensive extended warranties when you buy a new product and save yourself big money in the long run.