I just purchased a Parasound A31 to use for my front 3 speakers. Parasound is a Californian manufacturer of HiFi equipment. 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. Use the A 31 to power the front three channels in an AV receiver-based system. 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 A31 is THX Ultra2-certified as well. Optional brackets are available for The A 31 is ideal for this because it also provides matched amplification for the center channel speaker. Specs. Unbalanced RCA and balanced XLR inputs. 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. 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 "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.". > 78 dB at 1 kHz; 17-1/2" w x 7-5/8" h x 20" d, 7" h without feet, Soundstage Access April 2015 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. < 0.2 % at full power, IM distortion: balanced 16 V rms They can be switched out of the signal path when not needed, giving a slightly clearer sound. Auto turn-on by 12-volt trigger or audio signal simplifies home theater and multi-room operation. The sound was so much fuller, deeper and smoother than the previous lineups of Denon This blend of qualities made it a joy to listen to. Specifications. With its four feet removed, the A 31 chassis and front panel height occupies four rack spaces (7" or 176 mm). Other features include heavy-duty 24k gold-plated 5-way speaker terminals, gold-plated RCA input jacks, and a rear-panel ground lift switch. • 250 watts rms per channel into 8Ω, all channels driven. © Parasound Products, Inc. All right reserved. I started with a parasound a31 for the front 3. > 63 dB at 20 kHz, Input sensitivity: You might also want to use the A 31 to power the center channel and two surround channels of your home theater. "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. 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% "Remarkable definitionâ¦clean, luminous sound. All available for free download. 5 Hz - 100 kHz, +0/-3 dB at 1 watt, Total harmonic distortion: 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. 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 Firm and extended bass. Features 6.4″ display, MT6768 Helio P65 chipset, 5000 mAh battery, 128 GB storage, 8 GB RAM. I consider the Halo A 31 to be one of todays best values -- if not the best value -- in a power amplifier. 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. 250 watts RMS x 3, 20 Hz - 20 kHz, 8 Ω, all channels driven Parasound emphasizes that their products are supported from their San Francisco headquarters, and at dozens of authorized service centers across the US. "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. • THX Ultra2 certified. 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. At CES, Sound Lab mates its M-1s with Parasound’s top-rank $7000 JC 1 monoblocks. ", Stereophile September 2012 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. Parasound Halo, ZoneMaster, Z Custom, and NewClassic are four distinct product families. We can’t remember the last time we reviewed a product such as this with bass and treble controls. This is ideal for the music lover who is unwilling to compromise stereo reproduction. Nonetheless, it is still very Matched JFET inputs, MOSFET drivers, and high-current bipolar outputs contribute to its exceptional performance. • 385 watts rms per channel into 4Ω, all channels driven. (Unlike other products in the Halo line, it doesn’t have a silver option.) Designed by legendary audio guru John Curl, the Halo brings uncompromising audiophile performance to home theater. Parasound Halo A31 for sale. 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. Parasound opted to give the A 52+ a basic, black look. Support. 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. '", "The Halo A 31 has a clear, detailed sound that belies its price, combined with just a touch of warmth. 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