I only run a 3 channel home theater and have a Parasound A31 3 channel power amps. Moreover, the A31 wasn't critical (at all) of my choice of speaker, as it managed to reproduce similar results with all the options I had on hand, whether they were lower-sensitivity bookshelf speakers (Wharfedale) or commercial cinema loudspeakers (JBL). It also utilizes eight beta-matched, 15-amp 60Hz output transistors for each channel. I was taken aback by the level of low mid-bass articulation that was present, which I found equal to that of its high-frequency performance. Parasound Halo Three Channel Power AmplifierThe Parasound Halo A31 multichannel amplifier is a power.. £4,799.00. That said, the Parasound Halo A31 three-channel amp is among the best I've encountered thus far in my travels and one that I'm not going to be parting with any time soon. The only faults I found with the A 31 were the lack of a black finish finish, which has been remedied by a new finish that Parasound is releasing now, and the bright lights on the front of the unit. The component under review, the $2000 Halo A 21 stereo amp, is slotted in further down the Parasound line. Roger Kannorogerk@soundstagenetwork.com. . Installing the A31 into my Sanus equipment rack was fairly straightforward, thanks to a) the A31 being of rack-mountable size and b) Parasound including rack ears with purchase to facilitate such an installation. 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. I set up the Parasound Halo A 31 to drive the three front channels of my reference multichannel system, primarily using an Anthem Statement D2 surround-sound processor to listen to multichannel audio recordings and movies as well as two-channel recordings. This year they finally added a 3 channel amplifier targeting the home theater crowd that want a single amplifier to drive their front three channels. Explore more reviews in our AV Preamp and Stereo Preamp review sections.. Find a pair of Bookshelf Speakers or Floorstanding Speakers to drive with the A31. One of the newer entrants to that legacy is the Parasound A31 three channel power amplifier. The signal path is direct-coupled, meaning no capacitors or inductors are used anywhere in the signal path, and is capable of full power output down to 5Hz. All three amplifiers are unique and special in their own rights and deciding which is right for you is going to boil down to personal preference, as well as budget. Parasound Products, Inc.2250 McKinnon AvenueSan Francisco, CA 94124Phone: (415) 397-7100Fax: (415) 397-0144, E-mail: marketing@parasound.comWebsite: www.parasound.com, SoundStage! I think so, though undoubtedly traditional stereo and five- or seven-channel amplifiers will always be more popular than three-channel ones. It joins the two-channel Halo A 21 and the five-channel Halo A 51 -- only the Halo JC 1 monoblock costs more. So that is how a three-channel amplifier comes into play. The film’s soundscape wasn’t quite as expansive, and I couldn’t feel the forceful recoil of the automatic weapons as easily as I had with the A 31. If you only wish to listen to music, then you needn't power up the A31 at all. I connected the A31 to my Integra DHC 80.2 AV preamp, using individual runs of balanced interconnects courtesy of Monoprice. This time, with the A31 having to play nice with its two-channel sibling the A21, I couldn't detect any dissimilarities between the two when using one for mains and the other for center and/or rear channel duty. $3295 isn’t exactly a low price, but based on what I heard from the Halo A 31, I can’t think of a single reason for not considering it and/or one of the other Halo amps for powering any or all of the channels in a high-quality audio system and/or home theater. It’s a fantastic-sounding amp with power to spare. The front panel features Parasound's logo on top with three small indicator lights below the THX logo and a small backlit power button resting in the far left corner. Parasound Products was founded in 1981, in San Francisco, by Richard Schram, whose mission was to provide value for the money to his customers. The A31 employs matched pairs of JFETs for its input/pre-driver stages and matched pairs of MOSFETS in its driver stage. Operated in bridged mono, Bel Canto’s six-channel eVo6 ($4900, discontinued), which I usually use to drive my center and surround channels, is claimed to produce a powerful 350Wpc into 8 ohms, three channels driven -- and it has a transparent and musical sound. Add to that its prodigious power output and rock-solid build quality, and I can assure you: It’s the real deal. Parasound Halo, ZoneMaster, Z Custom, and NewClassic are four distinct product families. The Downside The A31 is a phenomenal overachiever as far as amplifiers go. To each his own, I guess. It should be noted that I ran the A31 both as a main amplifier and as a secondary one, meaning I used it to power my mains exclusively, as well as rear channels. Parasound 5 años de piezas, 5 años de garantía de mano de obra (sólo compras en EE.UU.). Que es muy buen aparato, que suena muy bien, que es muy digno y honrado. On the other hand, the Krell Evolution 3250e has a slightly more spirited sound versus that of the A31, in that the Krell is a bit more dynamic and taut throughout. Peter Gabriel’s Back to Front: Live in London (BD, Eagle Rock Entertainment), probably the best-sounding Peter Gabriel concert video available (I’ve watched a lot of them), is a great test for multichannel systems. The Levinson No 533H has a slightly more sultry sound in comparison to the A31, but one that is still pleasing, though it costs decidedly more at $10,000 retail. The power-on options include Manual, 12V Trigger, and Auto, with an adjustable Turn On Threshold. The massive, encapsulated toroidal transformer produces 1.5kVA, and has independent secondary windings for each channel and 98,400µF of power-supply filter capacitance. Regardless, the A31 never wavered nor seemed to run out of juice. The A31 plays host to a large encapsulated toroid transformer (1.5 kVA) with separate, independent windings for each of its three channels. Parasound Halo A31 Multi Channel Amplifier. This review will look at the more conventional, yet equally impressive, design from Parasound. Note: Measurements can be found through this link. There was a richer, woodier character to the double bass in “Linus and Lucy,” from the Vince Guaraldi Trio’s A Charlie Brown Christmas (SACD/CD, Fantasy), and the difficult task of articulating the deepest notes of this instrument was accomplished more precisely. Enjoy! As with everything else I've just described about the A31's sound, its soundstage definition was equally detailed and neatly arranged, but in a wholly natural-sounding way. Next I cued up another favorite, Mike Oldfield's Tubular Bells III, and the track "Far Above the Clouds"(Warner Bros. UK). Dynamics, much like the rest of the A31's performance, felt right, in that they were neither trumped up nor sluggish. “Let our rigorous testing and reviews be your guidelines to A/V equipment – not marketing slogans” It's hefty, too, weighing a respectable but not unmanageable 65 pounds. Parasound at Rocky Mountain AudioFest 2017 - Stereophile review by Herb Reichert. To the left of the input options rests a gain knob that gives you control, plus or minus 6dB off normal or THX reference, to help level match the A31 to other amplifiers - presumably ones that fall outside of the Halo lineup of products. 5. Lastly, I found the A31's binding posts to be a bit pedestrian and, well, not up to the same standard as the rest of the amplifier's build and sonic quality. Low-level detail was brilliantly fleshed out and, even when I dropped the volume to background levels, the experience didn't diminish, it merely scaled. Since its founding in 1981, Parasound has become one of the industry's … Inherent in the design are high current output (up to 60 amps per channel), and a high slew rate of >130V/µs—these specs alone suggested that the A 31 would work well in my system. Since its founding in 1981, Parasound has become one of the industry's most venerable brands, offering scores of products that historically have garnered high praise amongst discerning enthusiasts, though the wares have always been offered at reasonable prices. 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. I was certain I had owned a Parasound amplifier at one point in my life. The A31's internal circuitry was designed by none other than John Curl, a longtime Parasound collaborator and designer extraordinaire, with more than a few hits to his name. Make sense? I found the two to be interchangeable in terms of sonics, i.e., I couldn't tell them apart. They can be switched out of the signal path when not needed, giving a slightly clearer sound. 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. And despite what the purists say, on occasion, for example when playing a poorly engineered recording, they can be useful. The Halo A 31 was exceptional with two-channel recordings. From there, I connected the A31 to a host of different loudspeakers, ranging from my trusty Tekton Design Pendragons to a complement of Jade 1 bookshelf speakers from Wharfedale. The Hookup I received the A31 amplifier from Parasound shortly after attending the Rocky Mountain Audio Fest. 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. “Let our rigorous testing and reviews be your guidelines to A/V equipment – not marketing slogans” The purpose of a three-channel amp is to bring multi-channel capability to an existing two-channel system. December 5, 2012 by Chris Heinonen Leave a Comment. Cymbals sounded like real cymbals, versus artificial enhancements in order to show off traits such as air and decay. The Halo Integrated 2.1 combines a preamplifier with a power amp, phono preamp, DAC, and built-in adjustable crossover to make a device that can handle any current-format digital, line-level analog, or phono input. Atmospheric scenes had dead-silent backgrounds when required, and dialogue was more than merely intelligible -- it was realistic, and perfectly integrated within the mix, heightening Emily Blunt’s deadpan delivery of some of the film’s most memorable lines. Submit a ReviewContact Editorial Policy About us, Privacy Policy CCPA / GDPR Affiliate policy. KONKA Announces Three New Android TV Series for 2021 Lineup. All contents available on this website are copyrighted by SoundStage!® and Schneider Publishing Inc., unless otherwise noted. Edge of Tomorrow is a surprisingly smart, exciting film with an electrifying soundtrack. CES Trends: MiniLED and is it Better than OLED? The rest of my system was as follows: Dune-HD Max and Oppo BDP-103 as the primary source components, Behringer Feedback Destroyer feeding into a single JL Audio Fathom f110 subwoofer with parametric EQ filters from Room EQ Wizard, and a SIM2 Nero single-chip DLP projecting onto a 120-inch Acoustic4K screen from Elite Screens. Andrew Robinson evaluates the A31 to see if it carries on the Parasound name. The slightly curved and rounded front panel is a thing of beauty. You get a switchable phono stage, a headphone output and even tone controls. Along with being on the large side, the A31 does run warm and, under spirited listening, it can even get hot so proper ventilation is an absolute must, with open air installations being the best option, though by no means mandatory. What I mean by this is that a manufacturer of a three-channel amplifier, in this case Parasound, assumes that the customer has an existing stereo amp (or two mono amplifiers) that he or she likes and simply wishes to add amplifier channels for a center channel and surround speakers. Moving from left to right the first thing you'll notice are the A31's massive metal rack handles. $3,499.95. Write a review. Well, I used it (sparingly) when employing professional cinema equipment elsewhere in my signal chain, as it allowed me to better integrate the pro gear with the rest of my consumer-sourced equipment. Through the A 31, the sound across the front channels was flawless. But if a three-channel amp is really not what you’re looking for, Parasound still has you covered, with their A 21 two-channel and A 51 five-channel versions of the same basic Halo design. After soliciting some advice here and considering various brands and models, I decided on the Parasound A23. There is even a loop out option for daisy-chaining several amps together if you so desire. And when this album’s deep, sustained bass kicked in, the Parasound packed more punch, with a tight concussive quality and extremely low sustained tones. The A31 retails for $3,000, which puts it square in the mid-fi budget category, for it's not quite Emotiva/Outlaw affordable, but a far cry from Mark Levinson/Krell/Classe/McIntosh/ARC/Pass prices. When you buy through links on our site, we may earn an affiliate commission. It should not be overlooked. Parasound says the Halo A31 was created in response to the growing demand to get a high performance, high power, three-channel amplifier. Capacidad de corriente: 60 amperios pico por canal. The manual switch allows you to set the A31's auto power up feature to either auto (which has a sensitivity dial), manual (using the front-mounted power button) or via a 12-volt trigger. In all fairness, I didn't request the A31 for review so much as I sought it out in order to utilize it in my reference system and mixing studio. (16/44.1 FLAC, Columbia/Legacy) is a little dry, but the A 31 reproduced Nelson’s world-weary voice with a bit of smoothness. The A31 utilizes the same chassis as its fellow multi-channel and stereo siblings (including the JC1), measuring 17.25 inches wide by nearly eight inches tall (with feet) and just over 19 inches deep. ! ALL B-stock items are all professionally inspected by Parasound technicians and, most importantly, ALL B-Stock products contain the exact same FULL Parasound manufacturer’s warranty. At first look the Parasound Halo A 21 is an appealing and robust amplifier accented by brushed metal finish. The sustained hissing of hi-hat cymbals is prominent here, as in many recordings, but with the A 31, I was struck by how different each tom-tom sounded as it was hit. Read about the performance of the Parasound A31 amplifier on Page 2. During the numerous battle scenes, the metallic clanking and grinding of robotic exoskeletons, alien mimics, and powerful blasts from automatic weapons were perfectly positioned, while Christophe Beck’s low, pulsing music score effectively filled every bit of the rest of the soundscape. Add to Compare. Each features XLR as well as RCA input options that are selectable via a small toggle switch. Those of you with seven-channel systems can still benefit from a three-channel amplifier, as it gives you the ability to run your front three speakers, while utilizing a pair of stereo amps for your surround and rear channels, which could be lesser amps in terms of power than what is required for your front three channels. I'm not big on "break-in," but I do believe amplifiers, especially those with Class A and AB topologies, do need a little bit of time to warm up, so I gave the A31 a good 30 minutes or so of just playing music at background levels before sitting down for any critical listening sessions. Your support is greatly appreciated! Additional Resources Read more multi-channel amp reviews from HomeTheaterReview.com's writers. If I didn’t already own the Anthems, I’m not sure I’d choose them over the Parasound. Parasound may have been thinking along these lines when they engaged the well-known amplifier designer John Curl to create their new five-channel amp, the Halo A 52+ ($2,995). Sony 360 Reality Audio Updated and Expanded, McIntosh Makes 2021 Auto Debut with New Jeep Grand Cherokee, Pro-Ject’s Beatles-inspired Turntables Pay Tribute to the Band, 16 Terms You Need to Know Before Buying a Blu-ray Player, Bowers & Wilkins VM1 Speakers and AS1 Subwoofer Reviewed, Sony VPL-VW995ES 4K SXRD Projector Reviewed, Opera Mini Bookshelf Loudspeakers Reviewed, Pass Labs X250.8 Stereo Amplifier Reviewed, Parasound Halo Integrated 2.1-Channel Amplifier Reviewed, Parasound Halo C 2 Surround Processor and A 51 Multi-Channel Amplifier Reviewed, Parasound Model 5250 v.2 Multi-channel Amplifier Reviewed, Parasound Halo P 6 Preamplifier & DAC Reviewed, Parasound Announces Halo JC 5 Stereo Amplifier, though Halo products are now being offered in black, too, the A31's product page on Parasound's website, Jade 1 bookshelf speakers from Wharfedale, a 120-inch Acoustic4K screen from Elite Screens, Home Theater Review's Multi-Channel Amplifier page. B-Stock items are … Dynamics ran the gamut from wow to I think I may have messed myself, depending upon the scene and my choice of overall volume. Reviews of Attainable Hi-Fi & Home-Theater Equipment. The reader may be somewhat surprised at finding a Parasound product reviewed in Superior Audio.This San Francisco-based company has for years offered well made, good-value products that compete principally with other value-priced marques such as Adcom, B&K … The cracks of Ivan Vanko's whips were positively violent in their dynamic snaps and the resulting electrical crack was so vividly rendered that it made me shudder. First, the A31 is large and in charge, meaning its physical requirements may be a deal-breaker for some and/or in certain installations. As accomplished as the A 31 was, it wasn’t the last word in transparency. This blend of qualities made it a joy to listen to. My only complaint about the massively built A 31 is that while its binding posts are claimed to be of high quality, they look a little cheap and out of place in relation to the otherwise impeccable appearance and build quality. The newest product, the A31 three-channel amplifier reviewed here, is a first for Parasound. Pues la Parasound se come directamente al Musical Fidelity. Another benefit of having a three-channel amp over, say, a five- or seven-channel one is that it gives you the ability to selectively power up only certain components when need be, thus saving you money at the meter. After 15 years of devoted service, Parasound has retired its beloved Halo A 21 amplifier. Over the years, I’ve heard the Halo JC 1s driving myriad high-end speakers at many audio shows, and have always been impressed by their sound. While the Halo A 31’s power and bass control were impressive, its midrange clarity and ability to vividly float voices between the speakers at exactly the right depth -- not too up-front or recessed -- rivaled that of much more expensive amps. 5.0. I've gotten word of users with ten-plus-year-old Parasound amps still performing as well as the day they were taken out of the box and, while this reliability may cost Parasound some sales down the road, it does go a long way toward justifying the A31's slightly higher price point. The many screws securing the top plate slightly protrude and are easily visible, but are not particularly distracting. I had been a Parasound customer previously, having owned both the Halo and Classic line of products, so I was not unfamiliar with the brand or its sound. Each of the channel inputs are neatly arranged, well spaced and labeled 1, 2 and 3, respectively. I'm not suggesting that other amps simply ignore the score but, as with the rest of the performance, there just seemed to be a little more presence to it, lending a grander, more epic touch to the whole sequence. Performance I began my critical evaluation of the A31 amplifier with some two-channel music by way of Moby's "Everloving" off the hit album Play (V2). I hate the term mid-fi, as that carries with it a sort of negative connotation that the customer is somehow settling for middle of the road, which the A31 is clearly not. 5.0 out of 5 stars based on 1 product rating. For a Parasound customer, this could mean that he or she is already in possession of either a pair of JC1 monaural amplifiers or an A21 stereo amp. "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 noticed a bit more inflection in Dylan's voice than through previous amplifiers, as well as a bit more surrounding air, which lent a greater sense of dimension, not to mention scale, to the performance and to his physical being. However, this may not allow for the same level of flexibility should you wish to power your stereo mains differently than the rest of your speakers. Parasound has never offered a three-channel amplifier and, while three-channel amps are nothing new within the industry, fans of the company are probably asking themselves (and Parasound) what took so long. This site was designed by JoomlaShack, Karen Fanas, and The SoundStage! Review By Wayne Donnelly Click here to e-mail reviewer. I installed the A31 along the bottom of my rack with the A21 resting above, though there are three or four rack spaces between the two in order to allow for proper ventilation. . I’m not sure how much demand there actually is for three-channel amps, but I do use one to drive the center and surround speakers of my home-theater system, so I can see the utility of the A 31. The A 31 is rated at 250Wpc into 8 ohms or 400Wpc into 4 ohms, all three channels driven throughout the audioband of 20Hz–20kHz. Y al reducir y plantear la A23 hizo un buen aparato, pero NO es la A21. For example, in “Always On My Mind,” the piano was placed slightly in the back right of the soundstage, accompanied by a lone snare drum that did an excellent job of keeping time. Dialogue was always intelligible, arguably more so as a result of the A31's power and resolution as described above. And it had no trouble driving my speakers to any volume level I desired. A single button switches the amp from standby to on, and four tiny lights -- one for power, and one for each channel -- glow softly blue to indicate activity. The question that remains is whether the A31 is any good. While the eVo6 didn’t sound thin in any way, there was a richness to the A 31, as evinced by the big but melodic, gentle notes of the piano in “Christmas Time Is Here.” Lorde’s voice on her Pure Heroine (24/48 FLAC, Lava Music/Republic) had a wonderful purity in the midrange with the Bel Canto, but the Parasound -- also very clean through the midrange -- had just a touch of warmth, and a bigger but better-defined image of the voice, that were more musically satisfying. 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. Additionally, Parasound's A21 just won an … Parasound’s Halo A 31 might get overlooked because it’s a three-channel amplifier designed primarily for use in multichannel home-theater systems -- or because, at $3295, it costs more than a budget multichannel amplifier, if less than what many audiophiles would pay for a two-channel amp. Like the Levinson, the 3250e also retails for far more than the A31, coming in at $10,000 as well. At first look the Parasound Halo A 51 is an appealing and robust amplifier accented by brushed metal finish. IMO the Parasound is the better amp with a little more of a laid back presentation. On Cyndi Lauper’s The Body Acoustic (16-bit/44.1kHz FLAC, Sony BMG), the various stringed instruments -- including a particularly steely guitar -- and the singer’s raspy voice can sometimes be a bit jarring, but the A 31 struck the perfect balance between vividly realistic reproduction of the acoustic instruments and a deft addition of just a touch of warmth to the voice. I recently upgraded my front speakers to B&W 804D3. I am glad you are extremely pleased with the Parasound A21+. "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." Actors always came across as natural-sounding, with their scale appropriate to a) the action on screen and b) to my judicious use of my Integra's volume knob. Bass and low mid-bass control was again exceptional, as was definition and presence amidst the high-frequency onslaught happening around it. 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. Parasound calls the Halo Integrated a … More importantly, even with each crack spiking at around 100dB, the resulting sound was never fatiguing, sharp or brittle. Around back, the Halo A 31 is equally impressive. Parasound Halo A31 Review. I look forward to hearing it in the future. Free shipping. It's possible to get a Halo-branded amp with five channels. They didn't go extinct, but they fell out of favor as the "it" solution. 4 Distinct Product Lines. Even so, with Edge of Tomorrow it lacked some of the A 31’s weight and depth. John Curl’s circuit design for the Halo A 31 features complementary matched pairs of JFETs for the input pre-driver stages, matched pairs of MOSFETs for the driver stages, and an impressive eight matched 15A, 60MHz bipolar output transistors for each channel. For example, let's say your home theater and two-channel system are one and the same and you use a A21 Halo amp for your left and right mains and an A31 for your center and rear channels. We can’t remember the last time we reviewed a product such as this with bass and treble controls. Is an appealing and robust amplifier accented by brushed metal finish comes to amplifiers once installed, making the connections... That belies its price, combined with just a touch of warmth muy buen,. Was left in 2012 when Parasound discontinued the $ 2,500 a 52 writers! 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