Parasound opted to give the A 52+ a basic, black look. The biggest collection of Parasound manuals and schematics. This blend of qualities made it a joy to listen to. The three-channel Halo A 31 power amplifier combines raw power with elegant circuit design. Parasound Halo A31 for sale. '", "The Halo A 31 has a clear, detailed sound that belies its price, combined with just a touch of warmth. Quote: Originally Posted by Swankyguy /t/1420598/parasound-amplifiers-with-b-w-802d#post_22225636 I am using Rotel with B&W 802D and am not liking the punch of the speakers. 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. What a difference!! Add to that its prodigious power output and rock-solid build quality, and I can assure you: It’s the real deal. Additionally, Parasound's A21 just won a… Save parasound a31 to get e-mail alerts and updates on your eBay Feed. The A31 is THX Ultra2-certified as well. Here are some of the practical "Based on circuitry developed by John Curl for the highly praised Halo JC 1, the three-channel A 31 power amplifier is rated to deliver 250Wpc into 8 ohms or 400Wpc into 4 ohms. You might also want to use the A 31 to power the center channel and two surround channels of your home theater. "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." A 31 Features Specs Reviews Support 250 watts x 3 @ 8 Ohms / 400 watts x 3 @ 4 Ohms Adjustable gain for up to +6db over THX Reference level Unbalanced RCA a Running full range and full bore, I never lacked for power and weight.". © Parasound Products, Inc. All right reserved. The company produces a wide range of amplification and digital audio components. Special relays bypass the AC "soft start" circuitry after it's done its job for the purest AC and the purest sound. • 45 amps peak current per channel. Parasound calls the Halo Integrated … This is ideal for the music lover who is unwilling to compromise stereo reproduction. The component under review, the $2000 Halo A 21 stereo amp, is slotted in further down the Parasound line. Add to that its prodigious power output and rock-solid build quality, and I can assure you: It's the real deal. Designed by legendary audio guru John Curl, the Halo brings uncompromising audiophile performance to home theater. Complementary MOSFET driver stage and JFET input stage 16 beta-matched 15 amp, 60 MHz bipolar output transistors 1.2 kVA encapsulated toroid power transformer with independent secondary windings for each channel 88,000 µF power supply filter capacitance Plenty of grunt, quality build, great highs and mighty lows. Like all the other amps in the Halo product series, the A51 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's Halo A 23 amp gets a powerful update with a new Halo A 23+ model, featuring a power increase and many more upgrades. |. Features 6.4″ display, MT6768 Helio P65 chipset, 5000 mAh battery, 128 GB storage, 8 GB RAM. At CES, Sound Lab mates its M-1s with Parasound’s top-rank $7000 JC 1 monoblocks. It's fantastic for powering the front three channels of a home theater. However you employ the A 31, you will be delighted by its impeccable sonics, striking authority, and faithful reproduction of the smallest details. And despite what the purists say, on occasion, for example when playing a poorly engineered recording, they can be useful. 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. 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% From a look the A21 seems to have similar specs but a cleaner layout (not so many caps strewn about the place) From the specs, the + adds about 25% more power,20% more uF (whatever that does for you) 50% reduction in Features. AC present, channel status, and high temperature indicators team up with DC Servo and relay protection circuits to keep this powerhouse running safely at peak performance for years of reliable service. Even Halo's implementation of its automatic turn-on feature is exceptional. The remaining surround and back channels can be driven by the receiver. 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. The sound quality of the A31 connected to a Yamaha cxa5100 was a start in the right direction. Announced Mar 2020. "The Halo A 31 is able to drive any speaker you are going to throw at it and not complain, as well as being impeccably built and beautiful in appearance," notes Chris Heinonen in his December 5, 2012 review for Secrets of Home Theater and High Fidelity. Features 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. Reviews. • 250 watts rms per channel into 8Ω, all channels driven. Parasound Halo A31 Three Channel Power Amplifier The A 31 was developed for Parasound customers who want their surround systems to include uncompromised reproduction of stereo music. THX Ultra 2 certification ensures movie-house quality sonics, but the Halo surpasses this critical benchmark by delivering Parasound-quality sound derived from the ultra-high-end Parasound JC-1 400-watt mono amp. This blend of qualities made it a joy to listen to. After many years of dreaming about purchasing the A21, I have it now, and it is a truly remarkable amplifier. Beautifully implemented high-bias Class A / AB operation makes the most of an impressive 250-watt-per-channel power output at 8 ohms and 400-watts-per-channel at 4 ohms. Adjustable gain for up to +6db over THX Reference level. Support. 1 V for 28.28 V (THX Reference), Input impedance: Parasound uses the Burr-Brown analog resistor ladder. Samsung Galaxy A31 Android smartphone. Reviews. Specifications. This assures you of the best sound for the front channels while enabling the receiver to produce more power for the surround and back channels. Photos. I just purchased a Parasound A31 to use for my front 3 speakers. Nonetheless, it is still very Here's one more suggestion. Matched JFET inputs, MOSFET drivers, and high-current bipolar outputs contribute to its exceptional performance. The sound was so much fuller, deeper and smoother than the previous lineups of Denon Parasound emphasizes that their products are supported from their San Francisco headquarters, and at dozens of authorized service centers across the US. Use the A 31 to power the front three channels in an AV receiver-based system. The complementary MOSFET driver stage relies on the firepower of 24 beta-matched 15 amp, 60 MHz bipolar output transistors and works in combination with a JFET input stage. 60 amperes peak per channel, Power bandwidth: Very high bias allows greater Class operating range than others. Like other Halo models, the A 31 is solidly built and has a clean, attractive, brushed-aluminum faceplate. I now also have a A31 … 4u Chassis, carry handles, rack mounting adapter included, Secrets of Home Theater and High Fidelity, 250 watts x 3 @ 8 Ohms / 400 watts x 3 @ 4 Ohms, Adjustable gain for up to +6db over THX Reference level, Circuitry designed by legendary John Curl, Direct coupled (no capacitors or inductors in signal path), Complementary MOSFET driver stage and JFET input stage, 24 beta-matched 15 amp, 60 MHz bipolar output transistors, 1.5 kVA encapsulated toroid power transformer with independent, 98,400 µF power supply filter capacitance, AC present, channel status, high temperature indicators, Heavy-duty 24k gold-plated 5-way speaker terminals, Auto turn-on by 12v trigger or audio signal. Unbalanced RCA and balanced XLR inputs. (Unlike other products in the Halo line, it doesn’t have a silver option.) Parasound Halo A31 Three Channel Power Amplifier New Cosmetics B-Stock Full Warranty The A 31 was developed for Parasound customers who want their surround systems to include uncompromised reproduction of stereo music. It was purchased several weeks ago, so is basically a NEW amplifier. The A 31 is ideal for this because it also provides matched amplification for the center channel speaker. Firm and extended bass. 17-1/2" w x 7-5/8" h x 20" d, 7" h without feet, Soundstage Access April 2015 Other features include heavy-duty 24k gold-plated 5-way speaker terminals, gold-plated RCA input jacks, and a rear-panel ground lift switch. Auto turn-on by 12-volt trigger or audio signal simplifies home theater and multi-room operation. Design and Setup of the Parasound Halo A 31 Power Amplifier Offering the same 250 WPC into 8 ohms and 400 WPC into 4 ohms that the A21 and A 51 do, the A 31 makes an ideal mate for your front three speakers without having to spend money on … "The Halo A 31 is a wonderful amplifier. < 0.2 % at full power, IM distortion: balanced 16 V rms OMG!! The Parasound Halo A 31 is fantastic for powering the front three channels of a home theater, , it boasts balanced inputs with discrete circuits and XLR connectors, Class A/AB operations with 250-watts-per-channel or 400-watts-per Downloads. You'll find lots of uses for the three-channel A 31. ", "It’s a fantastic-sounding amp with power to spare. This is the Parasound Halo A31. Behind the scenes, the A31 is quite a brute, churning out a healthy 250 watts per channel into eight ohms and 400 watts per into four. By staying out of the way and letting me enjoy the music, the A 31 made this review a challenge to find new ways to say that it sounded wonderful. This is evident with the release of the new Parasound A 21+ stereo power amp ($3150), the successor to the A 21, which was originally launched in 2003. ", Stereophile September 2012 Parasound Halo, ZoneMaster, Z Custom, and NewClassic are four distinct product families. Continuous power output: ", Secrets of Home Theater and High Fidelity ", - Chris Heinonen, Secrets of Home Theater and High Fidelity, December 5, 2012, Parasound Halo A 31 Three Channel Power Amplifier - Item # PAHA31C, Pro-Ject Debut Carbon DC Esprit SB Turntable, Focal Clear Open Circumaural High Fidelity Headphones, Copyright © Audio Advisor, Inc. 1981-2021, Parasound Halo A-31 3-Channel Amp Manual (PDF Format), 2019 Parasound Halo Product Line Brochure (PDF Format), Parasound Halo A 31 Three Channel Power Amplifier Product Reviews, 250 watts x 3 @ 8 Ohms / 400 watts x 3 @ 4 Ohms, Adjustable gain for up to +6db over THX Reference level, Circuitry designed by legendary John Curl, Direct coupled (no capacitors or inductors in signal path), Complementary MOSFET driver stage and JFET input stage, 24 beta-matched 15 amp, 60 MHz bipolar output transistors, 1.5 kVA encapsulated toroid power transformer with independent secondary windings for each channel, 98,400 µF power supply filter capacitance, AC present, channel status, high temperature indicators, Heavy-duty 24k gold-plated 5-way speaker terminals, Auto turn-on by 12v trigger or audio signal, 4u Chassis, carry handles, rack mounting adapter included, Parasound 5 year parts, 5 years labor warranty (USA purchases only), Power output: 250 watts RMS x 3 continuous, 20 Hz - 20 kHz at 8 ohms; 400 watts RMS x 3 continuous, 20 Hz - 20 kHz at 4 ohms, Current capacity: 60 amps peak per channel, Frequency response: 5 Hz - 100 kHz, +0/-3 dB at 1 watt, Total harmonic distortion: <0.2% at full power, <0.03% at typical listening levels, Signal-to-noise ratio: >112 dB, input shorted, IHF A-weighted; 102 dB, input shorted, unweighted, Interchannel crosstalk: >78 dB at 1 kHz, >63 dB at 20 kHz, Input sensitivity (for 28.28 V output into 8 ohm): unbalanced 1 V, balanced 1 V per leg, Power consumption: standby, <1 watt; maximum, 1800 watts, Dimensions: 17.5" wide, 19.125" deep, 7" high (7.625" with feet), Manufacturer's limited warranty: 5 years parts, 5 years labor. I mistakenly purchased a 3 channel amp, not realizing that It is a 3 channel amplifier. They can be switched out of the signal path when not needed, giving a slightly clearer sound. This gives the greatest power to the front channels where it is needed the most. "Remarkable definition…clean, luminous sound. Night and day change in authority, speed, detail, clarity, depth, I could go on and on,,,,My system is now becoming something!! I consider the Halo A 31 to be one of today’s best values -- if not the best value -- in a power amplifier. The Parasound Halo A 31 was designed in response to increasing demand for a three-channel power amplifier that holds nothing back in power or performance. > 63 dB at 20 kHz, Input sensitivity: All available for free download. Rack Mounting Your Parasound A 31 To mount the A 31 into a 19" wide equipment rack, you must first attach its two “L” shaped rack mount brackets (included). "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. Optional brackets are available for Now I'm The direct-coupled design uses no capacitors or inductors in signal path. 250 watts x 3 @ 8 Ohms / 400 watts x 3 @ 4 Ohms. The A 31 is identical in performance and sound to the award- winning Halo A 51. 47 k Ω unbalanced; 94 k Ω balanced, S/N ratio: It has adjustable gain for up to +6 db over THX Reference level. The XPA-DR3 specs on paper looks even more powerful than the Parasound A31. Power Output – Stereo Mode (0.06% THD) 160 watts x 2, 8Ω both channels driven 240 watts x ", - Roger Kanno, SoundStage! • THX Ultra2 certified. Still, the slightly curved, anodized front panel lends it a degree of flair. • 385 watts rms per channel into 4Ω, all channels driven. We can’t remember the last time we reviewed a product such as this with bass and treble controls. > 78 dB at 1 kHz; |. Though it lacked some upper-bass richness, the A 31 had a 'clean, luminous' overall sound, with a sophisticated, detailed treble; rich, clean midrange; and firm, extended bass, said KR, adding that 'the sound is full, balanced and detailed and packs a wallop. < 0.04 %, Interchannel crosstalk: 250 watts RMS x 3, 20 Hz - 20 kHz, 8 Ω, all channels driven ", "In fact, it performed so well I let Parasound know I'll be paying for it and keeping it as my reference amp going forward. The Halo A 31 is able to drive any speaker you are going to throw at it and not complain, as well as impeccably built and beautiful in appearance. 112 dB, input shorted, IHF A-weighted, Dimensions: I've only own one amplifier all these years, and that's the Yamaha DSP-A1 and while it still provides decent sound, I would like more power for This allows the left and right front speakers to be powered by a dedicated two-channel power amp, such as the Halo A 21, or better yet, two JC 1 monoblock amps. On the rear panel are three groups of connectors/controls, one per channel, including balanced and unbalanced inputs and gain controls. The A 31 boasts balanced inputs with discrete circuits and XLR connectors. Specs. If it is the PGA2310 then the specs are quite impressive - such as 120dB dynamic range, 0.0004% THD @ 1kHz and 0.5db steps of fine control with channel matching within Circuitry designed by legendary John Curl. All Parasound Halo series power amplifiers have balanced inputs with XLR jacks so you can take full advantage of their inherent noise reduction capability. Parasound is a Californian manufacturer of HiFi equipment. "The Halo A 31 has a clear, detailed sound that belies its price, combined with just a touch of warmth. You get a switchable phono stage, a headphone output and even tone controls. The 1.5 kVA encapsulated toroidal power transformer with independent secondary windings for each channel and 98,400 µF power supply filter capacitance delivers an impressive current capacity of 60 amps per channel. Samsung Galaxy A31 in … With its four feet removed, the A 31 chassis and front panel height occupies four rack spaces (7" or 176 mm). "In fact, it performed so well I let Parasound know I'll be paying for it and keeping it as my reference amp going forward.". 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