Post a comment. 1. What would people choose: a used A23 or new 2125? Adjustable signal sensing can be set to automatically power up the A23 when it receives a signal from your preamp or other compatible component (or when it receives a 12-volt trigger command), eliminating the need for yet another wireless remote! Pure sonic magic with brilliant dynamics, delicious midrange and impressive resolution. Transformer size has been increased from 1.0 to 1.1kVA, and the filter capacitance increases 20-30% from 40,000 uF for the A 23 to 54,400 uF for the new A 23+. Parasound product lines include its top-of-the-line Halo audio components, the NewClassic series, and compact Z-series gear, as well as speakers and accessories. 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 Halo, ZoneMaster, Z Custom, and NewClassic are four distinct product families. The complementary JFET input stage and MOSFET drive stage incorporates 12 beta-matched 15 amp, 60 MHz bipolar output transistors for pristine sound. After soliciting some advice here and considering various brands and models, I decided on the Parasound A23. We appreciate you taking the time to read these instructions and thank you for selecting Parasound for your listening pleasure. The A23 is a John Curl design, and IMHO, second only to Nelson Pass in amplifier design. The 1.1KVA encapsulated toroidal power transformer uses independent secondary windings for each channel along with a 54,400 µF power supply filter capacitance. The preamplifier section is based on the Parasound P 5, but includes an analog crossover that is similar to, but more flexible than, the crossover in Parasound’s P 7 multichannel preamplifier. XLR. Parasound Products, Inc. 2250 McKinnon Avenue San Francisco, CA 94124 Phone: (415) 397-7100 Fax: (415) 397-0144. I have an A21 for my Front L/R speakers and plan to use an A23 in "mono" for the center channel. Parasound Halo A 23 - power amplifier | A23. Other performance upgrades include tweaked input circuits for improved crosstalk specs (70 dB at 20 kHz compared to 63 dB) and upgraded internal gold on gold audio connections, resulting in a cleaner signal path that's also more reliable. Balanced inputs with discrete circuits and XLR connectors yield dead quiet operation. "Parasound provides great value in the Halo A 23+ power amplifier. You'll hear the advantages of these upgrades as the A23+ presents lower distortion at full power. Power amps still in the running: Parasound NewClassic 275 v.2 (90W); NewClassic 2125 v.2 (150W); PS Audio Stellar S300 (140W). For me, leaving the gain control at maximum resulted in the volume control ramping up ridiculously too fast. balanced audio input, The rear panel of the A 23+ has been revised in terms of layout and new features. We delete comments that violate our policy, which we encourage you to read. I emailed Parasound and this is the response i got. 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 … The Halo series has always been known for its elegant aesthetics, and the look is even better than before. Sorry for yet another amp thread. The high-bias "Class A"/"Class AB" operation blends best sound with highest efficiency performance. Parasound Products was founded in 1981, in San Francisco, by Richard Schram, whose mission was to provide value for the money to his customers. E-mail: marketing@parasound.com Website: www.parasound.com Special relays bypass the AC "soft start" circuitry after it's done its job for the purest AC and the purest sound. Its direct-coupled topology uses no capacitors or inductors in the signal path for pure, uncolored sound. For full context, i use the Parasound Jc2 and my speakers are JBL 4367. Parasound recommends running their amps at full gain under normal conditions. Polk LSiM-707, LSiM-704C, LSiM-702FX; Dual SVS SB2000 subwoofers; Marantz SR7011 receiver; Parasound A31 and A23 amps; Oppo 205; Sony 65" 4K TV; FIOS; PS Audio Power Plant Premier; MIT S2 cables 2. Overall Rating: 5/5 Stars - Ken Stein and Steve Dellasala Luister (Netherlands), November 2003 The circuitry of the A 23 was engineered by legendary audio designer John Curl. It is, instead, an everything's-under-control, don't-worry-now mellow." Parasound has nothing to hide here as these are real numbers supported by A21+'s capability of delivering 60 amperes of current per channel, the ability to deliver this power through the amplifier's full band-width, and a low <0.1% Total Harmonic Distortion (THD) when driving the full audio band (20Hz - 20kHz) at rated power. If you run into difficulties, the Troubleshooting Guide should help you quickly remedy the problem. If you want improvement beyond what the A23's capable of with balanced inputs and lowered gain but require comparable output powers something like this is hard to beat, particularly if fronted by an attenuator to offset the 49811's gain stability requirement, and fits in an A23 chassis. trigger, RCA, An impressive power amplifier. "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. Discuss: Parasound Halo A 23 - power amplifier. The A23+ builds on the phenomenal performance of the A23. The adjustable gain function is there in case the amp output and preamp output don't match well in a system. RMS continuous power, full audio band (20 Hz - 20 kHz), 5Hz - 100kHz, +0/-3dB The performance of a power amplifier is highly dependent on the quality of its power supply, and Parasound went the extra mile with the A 23+, which boasts a 10% to 15% larger main power transformer compared to the previous model A 23. 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) Specs Continuous power output: 125 watts RMS x 2, 20 Hz - 20 kHz, 8 Ω, both channels driven 225 Watt, I choose to leave the gain control on the back of the JC5 in the middle setting. Just too much gear and with a few years planned delay in purchasing a summer home, I’d rather move gear on to others who will use it rather than have it sit in storage. gain control, gold plated connectors, 125 Watt, After 15 years of devoted service, Parasound has retired its beloved Halo A 21 amplifier. Like all the other amps in the Halo product series, the A 23+ has Parasound's exclusive bias circuit, which permits the amplifier to sound perfect from the instant it's turned on, rather than having to wait for bias to gradually build up as the amp warms up over time. Parasound Halo A23 Stereo Amplifier Review In light of our slow shift toward two channel audio (no, we are not abandoning personal audio), I decided it would be a good idea to start with something basic, like a stereo amplifier. Nominal Voltage ... Parasound Halo A 23 - power amplifier You'll hear the advantages of these upgrades as the A23+ presents lower distortion at full power. The 2.5mm trigger jacks of the A 23 have been replaced with 3.5mm jacks, and the audio trigger circuit has been updated for better low signal reliability. Even Halo's implementation of its automatic turn-on feature is exceptional. 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. One incredibly appealing preamp-amplifier package from Parasound.". The built-in phono stage can cater for both moving magnet and moving coil designs, but here too, Parasound has offered more than you’d expect. ALL RIGHTS RESERVED. 8 Ohm, 1, Its replacement, the Halo A 21+, is priced a little higher at $2,995. In his review in the November 2015 issue, Herb Reichert wrote that Parasound's Halo Integrated amplifier "has a recognizable sonic personality: easy flowing, mostly smooth, and decidedly mellow. Transformer size has been increased from 1.0 to 1.1kVA, and the filter capacitance increases 20-30% from 40,000 uF for the A 23 to 54,400 uF for the new A 23+. audio line-out, Parasound Halo A23+ Stereo Power Amplifier Shipping now More information to follow. Spoke with their tech team and they informed me that with their more recent product line of P3's, they lowered the gain ouput from the factory...stating that it lowers audiible noise and distortion. The moving coil input (52dB of gain) has two cartridge loading choices – 100 ohms and 47k ohms – that offer a degree of fine-tuning we only usually find in dedicated outboard phono units. Parasound Halo A 23 Stereo Amplifier Price: $995 USD. The front panel of the A 23+ looks great even when the unit is turned off. I would like to get a Parasound power amp but don't have the coin for a new A23+. The A 23+ delivers 160 watts-per-channel at 8 ohms compared to 125 watts-per-channel for the A 23, 240 watts-per-channel compared to 225 watts-per-channel at 4 ohms, and 500 watts in bridged mono mode compared to 400 watts with the A 23. DC servo and relay protection circuits keep operation safe and reliable. High bias Class A/AB operation. Parasound A 23 Design Overviewsections in the back of the manual. The PS Audio Stellar Gain Cell would have been a real contender but I really need that second optical in as well as tone controls. I have the gain control on the amp set full on to the THX reference level as Parasound recommends. Just too much gear and with a few years planned delay in purchasing a summer home, I’d rather move gear on to others who will use it rather than have it sit in storage. Warranty: Five years parts and labor. Halo has earned honors and awards that are unmatched. The A 23's custom-made, high-current power supply is specially designed for exceptionally quiet operation along with ample power for climactic music passages. When you switch the Halo on, LEDs display AC-present, channel, and high temperature status. Always detailed, accurate and balanced. Sounds crazy but I am selling my minty Parasound A23 power amplifier. I purchased the Parasound A23 amd with the P3 preamp and the T3 tuner with a pair of Paridigm 60/v2 speakers. When I told him I was planning to use primarily for two-channel stereo listening, he started trying to push me to HALO A23 at a hundred bucks less at $850. 400 Watt, 4 Ohm, The A 23+ has balanced and unbalanced inputs with adjustable gain controls, loop outputs, and new higher-performance speaker terminals adapted from the popular Parasound HINT 6 integrated amplifier. Discussion threads can be closed at any time at our discretion. The performance upgrades are impressive, beginning with a big 25% to 30% increase in output power compared to the previous model. Legendary designer John Curl designed the critically acclaimed JC 1, JC 2, Halo Integrated, and other no-compromise Halo components. The sound has been superb. "Together, the Parasound P 6 and A 23+ are dynamite," raves Roy Ervin Solstad, Stereo+ (Norway), January 2019. Features include c ircuitry designed by legendary John Curl, upgraded power output, transformer, filter capacitance, internal connections, speaker terminals and cosmetics. They were kind enough to also answer my question - here is their reply: "The P 3 is designed not to clip an audio signal, and advancing the volume control to closer to the high end of its range is perfectly normal. The A23+ also sports the left-right loop output connectors that pass through the input audio signals for daisy-chaining additional external amplifier(s) or … I called a local Parasound dealer to inquire about the HCA-1500A. Parasound Halo A 23 - power amplifier | A23. So this is their response : Typical to Parasound amplifiers, the amplification gain for each channel can be adjusted using the gain-level knobs provided. Well, after critical listening, I have concluded that this preamp sounds much better than my original P3. 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). Access, September 2019, "Together, the Parasound P 6 and A 23+ are dynamite. THX Ultra2 certified, Be respectful, keep it civil and stay on topic. Both new amplifier models feature more-refined Halo styling, including solid … No change! I haven’t heard better sound or seen higher quality at this price. Both can be had for $600. New front panel cosmetics include slim metal end caps replacing wider plastic end caps, an added gold metallic accent stripe along the end cap, gold feet now on black units, and an engraved metal "Parasound" badge replacing the red "P.". ", - Sathyan Sundaram, SoundStage! 2, audio line-in, The second amp I have never had a problem with. . To get such good sound for the price of this duo seems almost unnatural. It's perfectly acceptable to reduce the gain on the amp to get more precise control on the preamp's volume control. In a panic, I called Parasound. Parasound seems to have attended to every aspect of their design including the excellent build quality internally and externally matched with great looks." Additionally, Parasound's A21 just won a… But don't worry it's not milquetoast mellow or unwashed-hippy-stoner mellow. 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. Selling my minty Parasound A23 power amplifier. auto power on/off, . 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. © 2021 CNET, A RED VENTURES COMPANY. "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." 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