As Parasound defines it, value begins to decline when additional cost provides only marginal and diminishing returns, and increases when a product is reliably functional over decades. An impressive power amplifier. Parasound Halo A23 $995 Parasound’s A23 isn’t the last word in low-end authority, and it’s a bit cool in the midrange, but what it lacks in oomph it makes up for in finesse and pitch definition. To get such good sound for the price of this duo seems almost unnatural. Secrets of Home Theater & High Fidelity, November 2020, 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, 160 watts x 2 @ 8 Ω RMS, both channels driven, 240 watts x 2 @ 4 Ω RMS, both channels driven, Circuitry designed by legendary John Curl, Stable with speaker impedance dips below 2 Ω, 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, AC turn-on inrush surge protection with relay bypass, 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 µF 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. But thanks to better technology and improved design, things are changing. 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. Parasound Halo, ZoneMaster, Z Custom, and NewClassic are four distinct product families. The power was clean and clear. The weaknesses pointed out: overheating and weak bass CAN be a problem, but they can be overcome, and the end result is a great amplifier. The first amp started making hideous noises within an hour of listening but getting another one from my dealer calling Parasound was not a problem at all. "Doing so has proved that extremely high performance-per-dollar is still possible today when a company leverages decades of experience, and is spearheaded by a legend." The aural images of the instruments on this intimate recording of an acoustic jazz quintet were also more defined through the Halo. I went with Emotiva because the equivalent amps I expected to get had increased so much in cost since I last was in the market. This was fixed in A23+ and the power went back up to 160W for the exact same design. I am also thinking of buying 2 RSL 10" subs. "Parasound has chosen to take a staple core product that has remained an exceptional value for over fifteen years, the Halo A21 amplifier, and re-spin it into the Halo A21+," reports Michael Zisserson at positive-feedback.com. I am thinking of pairing the Parasound Halo A23 with the Parasound Halo P-5 preamlifier I am also thinking of buying the Yamaha A-S801. Both channels are driven, with 150 watts-per-channel into 8 ohms. Pure sonic magic with brilliant dynamics, delicious midrange and impressive resolution. In “Lester Leaps In,” from Bucky Pizzarelli’s Swing Live (24/96 FLAC, Chesky/HDtracks), Michael Moore’s bass was more intense and driving through the Parasound. 240 watts x 2, 4 Ω both channels driven, Power Output – Stereo Mode (0.9% THD) Network. Its rectangular metal faceplate has rounded plastic end plates at left and right, a case of folded sheet metal, and most of its top plate is pierced by ventilation slots. The Halo A 23+ stereo power amplifier ($1495 USD) measures 17.25”W x 4.2”H x 15.25”D and weighs 27 pounds. The Halo A 23+ was designed by engineer John Curl, who’s well known in audio circles, and since the 1990s has designed many amplifiers for Parasound. As Sherman traversed his instrument’s range, I could follow the movements of his mallets across the soundstage with the A 23+. 500 watts x 1, 8 Ω Balanced: 1 V per leg, S/N Ratio The A23 was not considered one of the best efforts at Parasound. I am also thinking of sticking with the Logitechs and forgetting about all this other stuff. System: - Parasound A23 amp - Parasound P3 preamp - Paradigm Studio 100 / v2 This is a response to the previous, rather negative, review. It is stylish, packs sufficient amplification power, and delivers solid high-fidelity sonic performance. Parasound Products, Inc.2250 McKinnon AvenueSan Francisco, CA 94124Phone: (414) 397-7100, SoundStage! Halo is our premier line with a reputation for going head-to-head with the most expensive equipment on the market, while costing a fraction of the price. Power Output – Stereo Mode (0.06% THD) As Parasound defines it, value begins to decline when additional cost provides only marginal and diminishing returns, and increases when a product is reliably functional over decades. "Parasound provides great value in the Halo A 23+. Moreover, this reasonably priced amp is musically quite involving. While I’d never thought the NAD lacked for power, the Parasound offered much more, and was able to deliver it with greater control across the audioband. Access (formerly GoodSound!) The NewClassic 200 Integrated is a modification of Parasound’s NewClassic 200 Pre-Amp, meaning it’s pretty much the same unit with the addition of an amp section. Frustrated, and for the sake of this review, I was forced to speculate about the nature of accurate and neutral. On the Halo A 23+’s rear panel are balanced (XLR) and unbalanced (RCA) inputs; each channel has a toggle switch for choosing between them, as well as its own loop output (RCA) for additional amplification (e.g., a subwoofer), and a Gain knob. +9 Vdc to +12 Vdc, 5 mA, Audio Trigger Requirements 110-125 VAC 60 Hz or 220-250 VAC 50 Hz Unbalanced: 33 kΩ Parasound’s feature-packed high-end amplifier is a knockout. The Parasound reproduced the extremes of low-frequency percussive punch and finessed the emotive flutes, excelling at highlighting microdynamics and timbral characteristics; the NAD provided less in the way of such contrasts. It had a dramatic punch, but also expressed delicate flute motifs, and even silence when needed. Parasound emphasizes that their products are supported from their San Francisco headquarters, and at dozens of authorized service centers across the US. Height, with feet: 4-1/8" (105 mm) 34 lb. 45 amps peak, per channel, Slew Rate > 85 dB at 1 kHz ", Soundstage Network  July 2019Reviewer's Choice Parasound at Rocky Mountain AudioFest 2017 - Stereophile review by Herb Reichert. Balanced: 66 kΩ,(33 kΩ per leg), Input Sensitivity for 28.28 V Out (8 Ω Load) 20 Hz - 20 kHz, +0/-0.25 dB, Total Harmonic Distortion (THD) Height, without feet: 3-1/2" (89 mm), 2U, Shipping Weight There’s a dedicated preamp feed too. Unbalanced: 1 V 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. Parasound Products was founded in 1981, in San Francisco, by Richard Schram, whose mission was to provide value for the money to his customers. With small-combo jazz, the Halo A 23+ offered detail, precision, accuracy, and well-balanced tonality. At far right are the fuse bay, the main power switch, and a three-pronged IEC power inlet. 300 watts x 2, 4 Ω both channels driven, Power Output – Bridged Mode (0.06% THD) Parasound provides great value in the Halo A 23+ power amplifier. The two binding posts support speaker cables up to 10AWG. Additionally, Parasound's A21 just won an … Via unbalanced (RCA) interconnects, I fed the A 23+ audio signals from my primary sources, a Music Hall MMF CD-25 CD player and a Cambridge Audio CXN (V2) network player. Parasound serves both the consumer and professional markets; their products have been used by multiple Oscar-winning sound designers, from such studios as Lucasfilm, Pixar, Sony Pictures, 20th Century Fox, Universal Pictures, and Warner Bros. Parasound currently makes preamplifiers and phono preamplifiers; mono, stereo, and multichannel power amplifiers; and integrated amplifiers; in the past they’ve offered AM/FM tuners, loudspeakers, preamplifier-processors, CD players, and DACs. The output-stage transistors support high current levels and are extremely fast (60MHz), to tame transient intermodulation distortion. Depth, with cables 17" (432 mm) Parasound Halo A 23 - power amplifier | A23. This was also particularly true of its reproduction of recordings of double bass. Stereo+ (Norway) January 2019 "Together, the Parasound P 6 and A 23+ are dynamite. . This site was designed by JoomlaShack, Karen Fanas, and The SoundStage! The Halo A 23+ includes a number of upgrades from its predecessor, the Halo A 23: The power output in mono has increased from 400W to 500W; in stereo, the increase is from 125 to 160Wpc into 8 ohms, and from 225 to 240Wpc into 4 ohms; the filter capacitors have been upgraded, from 40,000 to 54,400µF; the large, shielded toroidal transformer, formerly 1.0kVA, is now 1.1kVA; the crosstalk has improved, from 63 to 70dB; and the speaker terminals are now the “heavy-duty” ones used in the Halo HINT 6 integrated amplifier. Through the NAD, it had less energy and verve. (With a class-AB output stage, one-third power results in the maximum dissipation in the output devices.) Post a comment. I haven't heard better sound or seen higher build quality at this price. The A 23+ can be switched between its Stereo and Bridged Mono modes with a single toggle switch between the sets of left- and right-channel inputs -- in bridged mode, the Halo A 23+ delivers an astounding 500W into 8 ohms throughout the entire audioband (20Hz-20kHz). © Parasound Products, Inc. All right reserved. With the recording of Bruckner’s Symphony No.9, for example, the Halo sounded generally cleaner and more refined -- a definite step up in sound quality. The component under review, the $2000 Halo A 21 stereo amp, is slotted in further down the Parasound line. Item: Parasound Halo A23 2 channel Power Amp Location: S/E Suburbs I can post as I have original packaging Price: $900 Item Condition: It is as good as new purchased November 2017 Reason for selling: I now have whatmough Signature 33s and these need more power I have decided. 210 watts x 2, 8 Ω both channels driven Outstanding! 2 = Positive The company's new NewClassic 200 Integrated is, as you might well guess, an integrated amplifier, with a high-quality onboard digital-to-analog converter section. I found that the Halo A 23+, given enough breathing space on top, ran cooler than my NAD C 356BEE integrated amplifier. . (14.4 kg), Power Requirement i'm considering NAD C272/C162 or Parasound A23/P3 or possibly the NAD C372. The strata of instruments -- piano, strings, woodwinds -- remained distinct, producing an exciting feel. The only control on the faceplate, an On/Off button in the lower-left corner, is set into a flute, or rounded groove, that runs the entire width of the thick faceplate -- when the A 23+ is turned on, this button is illuminated in a soft blue that makes it seem to float above the groove, and nicely complements the two vertical pinstripes of gold at far left and right. As the amp was placed atop the preamp, this configuration made sense, and the Halo’s auto-sensing worked reliably. Standby: <1 Watt > 112 dB, input shorted, IHF A-weighted So you can justifiable say the original Hint was closer to the current A23+. The Parasound elevated this recording -- its introduction builds a gradual crescendo with layers of instruments that then suddenly cut out, leaving only Amos’s voice and acoustic piano. Parasound did a thorough job in writing the manual for the A21+. Yes I know the Fortes have quite good bass extension. Toward the end of this review, I received the new Parasound Halo P6 preamp that will solve this woe. The power cord provided was, appropriately, quite a bit heavier than that provided with a typical component. i'm looking at upgrading my amp which is a NAD C320BEE. RMS continuous power, full audio band (20 Hz - 20 kHz), Current Capacity Parasound was founded in 1981 by Richard Schram, and the company has been offering audio products under their own name as well as for OEM sales since then. Parasound's power amp is able to bring out the best bass from speakers. 3 = Negative (Return), Dimensions In much the same way, “Shattering Sea,” from Tori Amos’s Night of Hunters (24/88.2 FLAC, Deutsche Grammophon/HDtracks), an acoustic tone poem presented as pop music, lost much of its urgency with the NAD. These attributes of the Parasound’s sound were much more pronounced with well-recorded, high-resolution recordings than with run-of-the-mill CDs. There are independent power supplies for its input, driver, and output stages. Available in black with gold labeling, like the review sample, or in silver with black labeling, the A 23 measures 17 1/4”W x 4 1/8”H x 13 1/4”D and weighs a hefty 28 pounds. < 0.06 % at full power Its replacement, the Halo A 21+, is priced a little higher at $2,995. . Typical Listening levels: 125 Watts Bridged 4 Ω operation is not recommended Its case is available in silver or the black of my review sample, which looked very elegant. Side note - while there's no problem finding reviews on Parasound amps, I looked long and hard and couldn't find even a hint of a real review on one of the Emotiva DR models - and they've been out for a while now. It is a one-box solution that contains both the Halo P6 preamp ($1,499) and the Halo A23+ amplifier($1,499). High bias Class A/AB operation. In the world of hi-fi amplifiers, lots of features often means a compromised sonic performance. A fully "in spec" A23 won’t ever get more than mildly warm, even when pushed fairly hard into a nominal 4 Ohm load (air circulation normal). 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. Audio. hi - i'd like your input with regard to a possible purchase. is part of. That’s why we’ve had decades of purist amplifiers that have sported little more than source selection, a volume control, and a remote if you’re lucky. Gold-plated RCA input jacks ensure quality sound playback. "There is a lot to like in the reasonably-priced Parasound HALO A 23+ stereo amplifier. (In this intimate recording, the vibes and Barron’s piano together occupy a big share of the soundstage.). The rambunctious second movement of Bruckner’s large-scale Symphony No.9 delivers deliberate punch in energetically throbbing unison ostinato in the recording with Gustavo Dudamel leading the Gothenburg Symphony Orchestra (24/48 AIFF, Deutsche Grammophon/HDtracks), and the Parasound delivered room-filling sound, the timpani extending deep into the low bass without congestion. Idle (no music playing): 75 Watts Available in black with gold accents or silver, the HINT 6 is aimed at those who want the simplicity of having one piece of equipment versus two or more separate components, it also eliminates the need for additional power and interconnect … That original Haloone-box proved an extensive feature list and a great performance weren’t mutually exclusive, an… I purchased the Parasound A23 amd with the P3 preamp and the T3 tuner with a pair of Paridigm 60/v2 speakers. Description Since 1981, Richard Schram, founder and CEO of Parasound Products, Inc., has built the brand on making audio components that look and sound expensive, but sell for much less than it appears they should. Their four current product lines are: ZoneMaster, for stable power amplification into impedances of 2 ohms, and outboard crossovers for multi-speaker custom installations; the Z models, half-rack-space components also intended for the custom market; NewClassic, their budget line; and the Halo line, which comprises their most extensive, expensive, and highest-performing models. Parasound, a Bay Area maker with a half-century of success walking the parapet between high end audiophilia and value-engineering design, apparently concurs. I haven't heard better sound or seen higher build quality at this price. The punctuated call-and-response phrasing later in the work was also quite clear. Reviews of Attainable Hi-Fi & Home-Theater Equipment. In the Halo A 23+, Parasound has delivered an impressive power amplifier. Parasound A23, if your A23 is running HOT it’s either deficient (a defective part, or circuit improperly repaired or altered), or it is extremely confined and without normal free air circulation. While their focus was clearly on sound and build quality rather than a long list of features, they’ve nonetheless provided enough flexibility to satisfy a variety of users. The A23+ builds on the phenomenal performance of the A23. As I mentioned earlier, the first A23 stand-alone was too compromised in components to consequently have lower power rating. Pure sonic magic with brilliant dynamics, delicious midrange and impressive resolution. Different kinds of music made us appreciate the unusual character of this amplification. specs. The A23's innards are almost entirely discretes and most of the traces run on the underside of the board, making it hard to probe around to reverse engineer the amp's schematic, but presumably Parasound does this so they can deliver balanced and unbalanced signals to a balanced input stage and save a bit of cost. » English Translation PDF, Secrets of Home Theater & High Fidelity, November 2020 They apparently compromised way too much on the components to meet the price target. Sidebar 3: Measurements I tested the Parasound Halo A 21+ with my Audio Precision SYS2722 system (see the January 2008 "As We See It"). STEREOPHILE PARASOUND on display: PARASOUND HALO A23+ stereo power amp, 160-240W/ch JC1* Power amps, 400- 1200W/ch JC3jr* Phono preamp P6* Stereo preamp with built-in DAC Stereo Integrated Amp with built-in DAC PARASOUND CLASSIC 2100 Stereo preamp 2125 stereo power amp, 125-200W/ch PARASOUND Z - Only 9.5" wide! Yes, this is how HiFi is fun." The Parasound managed just fine without it. "One strength is its capability to reproduce a wide sonic palette, with depth and plenty of micro information. < 0.03 % at typical listening levels, Inter-channel Crosstalk Depth: 15"-1/4" (388 mm) Parasound’s expertise gained from years of building much-admired amps and preamps shows here. > 107 dB, input shorted, unweighted, DC Trigger Requirements Then, after ten minutes of receiving no signal, the Halo A 23+ will shut itself off. Parasound Halo A23+ Stereo Power Amplifier Shipping now More information to follow. It supplies a surprising amount of understandable technical information in regard to … The low end felt precise, controlled, and natural, as evidenced in this symphony’s many passages for timpani. 4 Distinct Product Lines. ", Stereo+ (Norway) January 2019 We put Parasound’s HINT 6, a powerful and seriously versatile stereo amplifier, through its paces. The A23… In the extensive write-up provided in the Owner’s Guide, Parasound design consultant John Curl says: “The circuits I design for Parasound are extremely sophisticated and are typical of products that are far more expensive. Although the two amps share some specifications, in terms of sound the Parasound consistently bested the NAD. The A 23+ offers 45A peak current per channel, and has gold-plated terminals and sockets, discrete Junction Field Effect Transistors (JFETs) for inherently high-impedance input, and Metal Oxide Semiconductor Field Effect Transistors (MOSFETs) to reduce odd-order harmonic distortion in the driver stages. The reproduction of this recording takes a light but deliberate touch, and the A 23+ delivered it with well-managed dynamics in the solo violin, orchestral strings, and rumbling timpani. I preconditioned the amplifier by operating it at one-third the specified power into 8 ohms for an hour. Sathyan Sundaramsathyans@soundstagenetwork.com. Back to Emotiva TA-100 VS Parasound A23, it is a conundrum. *All Power measurement are at 120 VAC, Parasound has established close and long-term relationships, some spanning more than three decades, with contract manufacturers in Taiwan, which are responsible for the manufacturing. Category: Amplifiers Parasound Halo P-3 Preamplifier and A-23 Power Amplifier Reviewed by David O’Gorman I purchased this unassuming little duo from a reputable seller on Audiogon ($1225 for the pair, N-I-B), without having *ever* heard them in a stereo salon. The Parasound really came into its own at higher volume levels, sufficient juice for which it had no trouble providing to my Sonus Fabers. One incredibly appealing preamp-amplifier package from Parasound.". An impressive power amplifier." The Halo A 23+ drove my Sonus Faber Principia 3 minimonitors. It’s an impressive set of features. Nonetheless, it is still very much a Curl design, with his customary J-FET input stage, MOSFET driver stage, and beta-matched bipolar-transistor output stage—each arrayed in a complementary configuration, making for a more linear and lower distortion circuit. The sound has been superb. Width: 17-1/4" (437 mm) All contents available on this website are copyrighted by SoundStage!® and Schneider Publishing Inc., unless otherwise noted. Bridged 4 Ω operation is not recommended, Power Output – Bridged Mode (0.9% THD) 5 Hz - 100 kHz, +0/-3 dB Sticker shock, and a lot of good reviews online and from friends with their amps, led me to Emotiva. Note: Measurements can be found through this link. 2 mV - 10 mV, XLR Pin Identification There are other lights -- tiny LEDs that glow blue to indicate that each channel is functioning properly, red to warn of overheating. 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