"Remarkable definition…clean, luminous sound. You might also want to use the A 31 to power the center channel and two surround channels of your home theater. 17-1/2" w x 7-5/8" h x 20" d, 7" h without feet, Soundstage Access April 2015 > 78 dB at 1 kHz; "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. 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. 400 watts RMS x 3, 20 Hz - 20 kHz, 4 Ω, all channels driven, Current capacity: Reviews. Downloads. "The Halo A 31 is a wonderful amplifier. They can be switched out of the signal path when not needed, giving a slightly clearer sound. 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. Add to that its prodigious power output and rock-solid build quality, and I can assure you: It’s the real deal. 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 A 31 boasts balanced inputs with discrete circuits and XLR connectors. OMG!! 250 watts RMS x 3, 20 Hz - 20 kHz, 8 Ω, all channels driven Optional brackets are available for 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 Use the A 31 to power the front three channels in an AV receiver-based system. With its four feet removed, the A 31 chassis and front panel height occupies four rack spaces (7" or 176 mm). I consider the Halo A 31 to be one of today’s best values -- if not the best value -- in a power amplifier. 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. < 0.2 % at full power, IM distortion: balanced 16 V rms Photos. This gives the greatest power to the front channels where it is needed the most. The A31 is THX Ultra2-certified as well. Parasound Halo, ZoneMaster, Z Custom, and NewClassic are four distinct product families. Now I'm 5 Hz - 100 kHz, +0/-3 dB at 1 watt, Total harmonic distortion: 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). 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. This blend of qualities made it a joy to listen to. Parasound emphasizes that their products are supported from their San Francisco headquarters, and at dozens of authorized service centers across the US. Parasound opted to give the A 52+ a basic, black look. Matched JFET inputs, MOSFET drivers, and high-current bipolar outputs contribute to its exceptional performance. Support. Parasound uses the Burr-Brown analog resistor ladder. 1 V for 28.28 V (THX Reference), Input impedance: 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. 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. 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. Here's one more suggestion. The direct-coupled design uses no capacitors or inductors in signal path. All Parasound Halo series power amplifiers have balanced inputs with XLR jacks so you can take full advantage of their inherent noise reduction capability. 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. 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. Additionally, Parasound's A21 just won a… I started with a parasound a31 for the front 3. This is ideal for the music lover who is unwilling to compromise stereo reproduction. 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 47 k Ω unbalanced; 94 k Ω balanced, S/N ratio: Even Halo's implementation of its automatic turn-on feature is exceptional. The A 31 is ideal for this because it also provides matched amplification for the center channel speaker. • 45 amps peak current per channel. You'll find lots of uses for the three-channel A 31. > 63 dB at 20 kHz, Input sensitivity: ", - Roger Kanno, SoundStage! 60 amperes peak per channel, Power bandwidth: Samsung Galaxy A31 Android smartphone. 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% 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. Here are some of the practical Designed by legendary audio guru John Curl, the Halo brings uncompromising audiophile performance to home theater. 112 dB, input shorted, IHF A-weighted, Dimensions: |. ", "It’s a fantastic-sounding amp with power to spare. Specifications. Specs. "The Halo A 31 has a clear, detailed sound that belies its price, combined with just a touch of warmth. 250 watts x 3 @ 8 Ohms / 400 watts x 3 @ 4 Ohms. • 250 watts rms per channel into 8Ω, all channels driven. 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. "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. 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. It is a 3 channel amplifier. Adjustable gain for up to +6db over THX Reference level. • 385 watts rms per channel into 4Ω, all channels driven. The biggest collection of Parasound manuals and schematics. Nonetheless, it is still very Announced Mar 2020. |. 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. This is the Parasound Halo A31. Power Output – Stereo Mode (0.06% THD) 160 watts x 2, 8Ω both channels driven 240 watts x The A 31 is identical in performance and sound to the award- winning Halo A 51. At CES, Sound Lab mates its M-1s with Parasound’s top-rank $7000 JC 1 monoblocks. However you employ the A 31, you will be delighted by its impeccable sonics, striking authority, and faithful reproduction of the smallest details. "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.". 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 The component under review, the $2000 Halo A 21 stereo amp, is slotted in further down the Parasound line. 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 Plenty of grunt, quality build, great highs and mighty lows. The sound quality of the A31 connected to a Yamaha cxa5100 was a start in the right direction. 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. You get a switchable phono stage, a headphone output and even tone controls. < 0.04 %, Interchannel crosstalk: I mistakenly purchased a 3 channel amp, not realizing that Circuitry designed by legendary John Curl. And despite what the purists say, on occasion, for example when playing a poorly engineered recording, they can be useful. Like other Halo models, the A 31 is solidly built and has a clean, attractive, brushed-aluminum faceplate. • THX Ultra2 certified. 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 I just purchased a Parasound A31 to use for my front 3 speakers. Unbalanced RCA and balanced XLR inputs. '", "The Halo A 31 has a clear, detailed sound that belies its price, combined with just a touch of warmth. Add to that its prodigious power output and rock-solid build quality, and I can assure you: It's the real deal. Special relays bypass the AC "soft start" circuitry after it's done its job for the purest AC and the purest sound. I now also have a A31 … ", - 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. Reviews. Parasound calls the Halo Integrated … Parasound Halo A31 for sale. 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. 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. It was purchased several weeks ago, so is basically a NEW amplifier. © Parasound Products, Inc. All right reserved. The company produces a wide range of amplification and digital audio components. Running full range and full bore, I never lacked for power and weight.". Access, April 15, 2015, "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. `` remarkable definition…clean, luminous sound Halo line, it doesn ’ t have a silver option )... Thx Reference level now, and it is needed the most adjustable gain up... 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