Product Lines > Halo > A 23 Two Channel Power Amplifier

Product Lines > Halo > A 23 Two Channel Power Amplifier:

Circuitry designed by legendary John Curl
Lucasfilm Home THX Ultra2 certified
High bias Class A/AB operation
Balanced inputs with discrete circuits and XLR connectors
Direct Coupled - no capacitors or inductors in signal path
Complementary MOSFET driver stage and JFET input stage
12 beta-matched 15 amp, 60 MHz bipolar output transistors
1 kVA encapsulated toroid power transformer with independent
secondary windings for each channel
48,000 �F power supply filter capacitance
DC Servo and relay protection circuits
AC present, channel status, high temperature displays
Heavy-duty 24k gold-plated 5-way speaker binding posts
Gold-plated RCA input jacks; loop output jacks
Auto turn-on by 12v trigger or audio signal
Rear mounted gain controls, ground lift switch
2u Chassis, carry handles, rack mountable with HRA2 (sold separately)
Parasound 5 year parts, 5 years labor warranty
(For USA and Canada purchases only)

        Continuous power output:
        125 watts RMS x 2, 20 Hz - 20 kHz, 8 Ω, both channels driven
        225 watts RMS x 2, 20 Hz - 20 kHz, 4 Ω, both channels driven
        400 watts RMS x 1, 20 Hz - 20 kHz, 8 Ω

        Current capacity:
        45 amperes peak per channel

        Power bandwidth:
        5 Hz - 100 kHz, +0/-3 dB at 1 watt

        Total harmonic distortion:
        < 0.06 % at full power

        IM distortion: balanced 16 V rms
        < 0.04 %

        Slew rate:
        > 130 V/�second

        Dynamic headroom:
        > 1.5 dB

        Interchannel crosstalk:
        > 80 dB at 1 kHz;
        > 63 dB at 20 kHz

        Input sensitivity:
        1 V for 28.28 V, THX Reference Level

        Input impedance:
        33 k Ω

        S/N ratio:
        112 dB, input shorted, IHF A-weighted

        Damping factor:
        > 800 at 20 Hz

        Voltage:
        Switchable for 110V - 120V or 220V - 240V

        Dimensions:
        17-1/4" w x 4-1/8" h x 13-1/4" d, 3-5/8 " h without feet

        Net weight: 28 lb.

Good Sound, December 2004
"My son began dancing while I played this CD through the Parasound combo (P 3/A 23) - they passed the toe-tapping test with flying colors." "...the Halo A 23 never sounded strained, nor did the sonic picture lose coherence or take on unwanted coloration with the increased volume." "Parasound's Halo P 3 preamplifier and Halo A 23 power amplifier are sexy in appearance, easy to use, and sound solid and satisfying." "Good value and good sound: a winning combination!" - Eric Hetherington

The Absolute Sound, October 2004
Editor's Choice Recommended Product - Power Amplifier under $1,000

Home Cinema Choice (UK), March 2004
"125 Parasound Watts carries a lot more grunt in the real world than a similar number of Watts from most AV amps, as our lab test prove." "...the system is powerful, engaging and very listenable, even when pumping the bass cones as though there was no tomorrow." "Power reserves are high and the whole effect is one of control, good definition and kick ass authority." "...a superb package (C 2, A 52, A 23), whose power and majesty can only be hinted at on the printed page, and tremendous material value for money too. Audition with urgency." 4 1/2 Stars - Alvin Gold

Futurelooks, November 2003
"Each note was reproduced with a distinction, bass extension, and clarity." "The HALO system (P 3/A 23) brought out previously hidden harmonics and details that I never truly heard before, but at the same time, made the track sound a lot more laid back and musical." "Although there are only two speakers attached to this system (P 3/A 23), the three dimensional imaging produced by this system is really outstanding." "Absolutely the best bang for the buck that money can buy." Editor's Choice - Stephen Fung

Stereo (Germany), July 2003
"...darf sich hervorragender Empfangsleistungen rühmen..." - Holger Barske

"...may boast about excellent reception achievements..." - Holger Barske

The Absolute Sound, June 2003
Featured component in Annual Recommended Systems article.

Stereo Times, April 2003
"This amplifier packs a significant wallop, and does so while maintaining a good measure of soundstage composure and truth of timbre." - Greg Petan

Audiorevolution.com, December 2002
"...the soundstage was beautifully overwhelming. I cranked the volume in an inadvertent attempt to involve my neighbors and the A 23 amplifier had no problems keeping up. The soundstage was very full, extending beyond the outside edges of the speakers and left no noticeable holes." "...the sound for stereo music reproduction is better than any A/V receiver I have heard in my system by leaps and bounds." - Brian Kahn

Playboy, December 2002
Playboy's Christmas Gift Guide, featured item: "If you've got it, spend it"

T3 (UK), November 2002
"From the off it sounds both colorful and convincing." " ...more than capable of generating a generous, cohesive and believable sound that doesn't want for ambient detail or atmosphere. It 'cruises' beautifully too; if amps can sound supple and loose-limbed, these ones do." "...effortlessly musical and consistently enjoyable." - David Vivian

Hi-Fi Choice (UK), November 2002
"...it's the Halo style that makes you wonder why other amps at the price aren't this well made." "Beautifully built with even-handed, natural sound. Deep sound stage and bolted-down stereo image." "Looks like high-end electronics, sounds like high-end electronics, priced like mid-fi." - Alan Sircom

The Absolute Sound, November 2002
"...the A 23 made horns sound remarkably lifelike and natural." "...I was impressed with the A 23's resolution..." "This Halo P 3/A 23 combo is the kind of system that should be celebrated as an invitation to participate in high-end audio as a hobby. And it continues Parasound's tradition of giving people more performance for the money than they have any right to expect." - Shane Buettner

Read reviews for all of the Halo line.

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KEY
	Product Manuals, Manual Appendices, Product Brochures
	Product Frequently-Asked-Questions
	Remote Control Software, RS-232 Codes
	Software Updates

The following downloads are available for the A 23 Amplifier:

Product Information:
	Filename	File Type	Release Date	Important Notice
	A 23 Owner’s Guide	1.5 MB Adobe PDF	02/18/2003
	A 23 Brochure	740 KB Adobe PDF	02/18/2003
	Halo Brochure - Screen version	752 KB Adobe PDF	04/03/2007
	Halo Brochure - Print version	4.3 MB Adobe PDF	04/03/2007