Parasound - A 23+ Power Amplifier

Equipment Amplification Power Amp
Price $1,799.00
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Parasound - A 23+ Power Amplifier

Parasound - A 23+ Power Amplifier

Price $1,799.00
Adding to cart… The item has been added
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Class A/AB Operation, Independent Power Supplies, and John Curl-Designed Circuitry: 160Wpc Parasound A 23+ Power Amplifier Exemplifies High Performance and Value

How does the Parasound A 23+ stereo power amplifier distinguish itself from the competition in (and above) its price class? Let's try and count the ways. Touting circuitry designed by audio legend John Curl, as well as a direct-coupled signal path (no capacitors or inductors), the high-value A 23+ features independent power supplies for the JFET input stage, MOSFET driver stage, an output stage – sonically beneficial architecture very rarely seen in its bracket. A 1.1kVA shielded toroidal transformer with independent windings for each channel, 12 beta-matched 15 ampere/60MHz bipolar output transistors, and 54,400uF filter capacitors for the output stages add to its technical muscle. Most manufacturers cannot come close to the engineering prowess and first-rate topology inside A 23+.

Ditto the 27-pound component's way with music. Outputting 160Wpc into eight ohms (240Wpc into four ohms), and stable with speaker impedance dips below two ohms, the Class A/AB A 23+ mines micro- and macro-details from recordings and presents them with outstanding accuracy, emotionalism, and deep. If you've longed to experience game-changing dynamics, resolution, and low-end weight from favorite albums and songs, A 23+ will help take you there. It drives speakers with authority and has the luxury of drawing upon 45 amperes of peak current per channel. And since full power is rated all the way down to 5Hz, you're going to hear a thriving low end.

From its ultra-sturdy chassis to elegant look with aluminum end caps, A 23+ gets just about everything right. A pair of balanced XLR inputs with discrete circuits, DC servo and relay protection circuits, gold-plated RCA input and loop output jacks, robust 24k gold-plated five-way speaker binding posts, Harris soft-recovery bridge diode rectifiers, gain controls on the left and right channels, and AC turn-on inrush surge protection with relay bypass further underline its commitment to fidelity and reliability. A 23+ even hosts automatic turn-on capability via 12V trigger or audio sensing.

Now, factor in Parasound's five-year warranty, and you just might agree with SoundStage! Access, which claims it hasn't "heard better sound or seen higher build quality at this price." 100% Music Direct Satisfaction Guaranteed.

"Some audio products impose their own signature on the sound of any recording played through them, but the Halo A 23+ consistently let the music itself shine through, reproducing it with a sound that was always detailed, accurate, and balanced. I was impressed by its quietness, the amount of power it could swiftly deliver, and its tremendous dynamic range."
– Sathyan Sundaram, SoundStage! Access, Reviewers' Choice

"One strength is its capability to reproduce a wide sonic palette, with depth and plenty of micro information. Parasound's power amp is able to bring out the best bass from speakers."
On-Off (Spain)

"Pure sonic magic with brilliant dynamics, delicious midrange and impressive resolution."
Stereo+ (Norway)

"In general, the sonic attributes of the A23+ score highly in my scorecard. The A23+ delivers neutral-character vivid sounds with excellent dynamics. Sonic presentation seems well balanced across the audible frequency spectrum with extended treble and punchy bass. It is capable of portraying satisfying soundstage too."
– Yongki Go, The Secrets of Home Theater and High Fidelity

Power Output – Stereo Mode (0.06% THD):
   160 watts x 2, 8 Ω both channels driven
   240 watts x 2, 4 Ω both channels driven
Power Output – Stereo Mode (0.9% THD):
   210 watts x 2, 8 Ω both channels driven
   300 watts x 2, 4 Ω both channels driven
Power Output – Bridged Mode (0.06% THD):
   500 watts x 1, 8 Ω
   Bridged 4 Ω operation is not recommended
Power Output – Bridged Mode (0.9% THD):
   600 watts x 1, 8 Ω
   Bridged 4 Ω operation is not recommended
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 kΩ
   Balanced: 66 kΩ,(33 kΩ per leg)
Total Gain: 29 dB
Input Sensitivity for 28.28 V Out (8 Ω 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)
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
Dimensions (WDH): 17-1/4" x 15"-1/4" x 3-1/2"
Weight: 27 lbs.

User Manual (PDF, 2.3 MB)

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