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 On the rear panel are three groups of connectors/controls, one per channel, including balanced and unbalanced inputs and gain controls. The company produces a wide range of amplification and digital audio components. 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. Specs. 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 "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. The A 31 is ideal for this because it also provides matched amplification for the center channel speaker. 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 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. The component under review, the $2000 Halo A 21 stereo amp, is slotted in further down the Parasound line. Adjustable gain for up to +6db over THX Reference level. However you employ the A 31, you will be delighted by its impeccable sonics, striking authority, and faithful reproduction of the smallest details. 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. This is ideal for the music lover who is unwilling to compromise stereo reproduction. After many years of dreaming about purchasing the A21, I have it now, and it is a truly remarkable amplifier. 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. Save parasound a31 to get e-mail alerts and updates on your eBay Feed. The A 31 boasts balanced inputs with discrete circuits and XLR connectors. Circuitry designed by legendary John Curl. Very high bias allows greater Class operating range than others. I mistakenly purchased a 3 channel amp, not realizing that Samsung Galaxy A31 in … The surround or back channels can then be powered by a smaller two-channel Parasound power amplifier, such as the Halo A 23. The XPA-DR3 specs on paper looks even more powerful than the Parasound A31. And despite what the purists say, on occasion, for example when playing a poorly engineered recording, they can be useful. 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. • 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. Samsung Galaxy A31 Android smartphone. 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. It was purchased several weeks ago, so is basically a NEW amplifier. Here's one more suggestion. Unbalanced RCA and balanced XLR inputs. Optional brackets are available for 1 V for 28.28 V (THX Reference), Input impedance: This gives the greatest power to the front channels where it is needed the most. It is a 3 channel amplifier. The A31 is THX Ultra2-certified as well. The sound quality of the A31 connected to a Yamaha cxa5100 was a start in the right direction. 112 dB, input shorted, IHF A-weighted, Dimensions: Downloads. Parasound uses the Burr-Brown analog resistor ladder. 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 17-1/2" w x 7-5/8" h x 20" d, 7" h without feet, Soundstage Access April 2015 Parasound Halo, ZoneMaster, Z Custom, and NewClassic are four distinct product families. You get a switchable phono stage, a headphone output and even tone controls. Like other Halo models, the A 31 is solidly built and has a clean, attractive, brushed-aluminum faceplate. The sound was so much fuller, deeper and smoother than the previous lineups of Denon Support. Power Output – Stereo Mode (0.06% THD) 160 watts x 2, 8Ω both channels driven 240 watts x 250 watts x 3 @ 8 Ohms / 400 watts x 3 @ 4 Ohms. This is the Parasound Halo A31. Parasound emphasizes that their products are supported from their San Francisco headquarters, and at dozens of authorized service centers across the US. ", - Roger Kanno, SoundStage! Continuous power output: ", "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. "Remarkable definition…clean, luminous sound. Matched JFET inputs, MOSFET drivers, and high-current bipolar outputs contribute to its exceptional performance. 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% It has adjustable gain for up to +6 db over THX Reference level. '", "The Halo A 31 has a clear, detailed sound that belies its price, combined with just a touch of warmth. 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