While I would like to buy the jc1 monoblocks they take up a ton of space. main. 88,000 µF power supply filter capacitance. gain control, 250 Watt, Bridged 4 Ω operation is not recommended 20 - 20000 Hz. Complementary MOSFET driver stage and JFET input stage. > 1100 at 20 Hz, DC Trigger Requirements Total Harmonic Distortion (THD) 0.2 %. The A 21+ is exceptional and provided an awe-striking feel.". "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." Input sensitivity: 1V per leg balanced, 1V unbalanced. I believe the Parasound are Class A to 10W, same output wattage-wise. 2 mV - 10 mV, XLR Pin Identification Balanced: 1 V per leg, S/N Ratio Question is, does the a21 sound as good as the jc1 (close is good - there is a reason the jc1 is 4 times as much) and will the a21 be able to drive the 802's. > 110 dB, input shorted, unweighted, Damping Factor 1 = Ground (Shield) 88 lb. 1.3 kVA shielded toroid transformer w/ independent windings for each channel. At first look the Parasound Halo A 21 and A 51 are appealing and robust amplifiers accented by brushed metal finish and a "Halo" aqua blue light around the power button. Output Power / Channel. Parasound decided to update their already brilliant A 21 power amplifier which had become a staple for their brand for over 10 years. Halo A21 Two-Channel Amplifier. Harris hyper-fast soft-recovery bridge diode rectifiers. The JC 5 is a 400-watt per channel stereo amplifier designed by John Curl that combines design 2, 2, RCA, Power bandwidth: 5 Hz - 100 kHz, +0/-3 dB at 1 watt. XLR, Typical Listening levels: 300 Watts I actually purchased my A21+ from them. 125 Watt, 225 Watt, 400 Watt. +9 Vdc to +12 Vdc, 5 mA, Audio Trigger Requirements 16 beta-matched 15 ampere, 60 MHz bipolar output transistors. Discussion threads can be closed at any time at our discretion. 750 Watt, 4 Ohm, 5 Hz - 100 kHz, +0/-3 dB The Halo A 23+ was designed by engineer John Curl, who’s well known in audio circles, and since the 1990s has designed many amplifiers for Parasound. balanced audio input, 0.03 %, THX Ultra2 certified, < 0.1 % at full power > 115 dB, input shorted, IHF A-weighted Page 18: Technically Speaking 4 Ω load and a 4 Ω speaker appears as only a 2 Ω load. Specs below. Standby: 1 Watt With the assistance of legendary Audio Designer John Curl, they’ve created a beautiful and powerful successor to the A21, The A21+ stereo power amplifier. 60 amps peak, per channel, Slew Rate 108,000 µF filter capacitors for output stages. auto power on/off, IMO the Vincent is a much better-sounding amplifier than the Parasound A21. Independent power supplies for input stage, driver stage and output stage. The Parasound A23 is a lousy amplifier. main. "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. just wondering if the parasound halo a21 power amp can be bi amped with another halo 21 or a parasound classic 2250. for my front left and right monitor audio pl300s? Additionally, Parasound's A21 just won an … Voltage gain: 29dB, 8 ohms (unbalanced input). > 130 volts per microsecond, Frequency Response banana/spade x 2, labor, Height without feet: 7-1/8" (181 mm) 20 - 20000 Hz. In fact I was in the process of reviewing the Thiel CS2.7 Floor-standing Speakers when the P 5 arrived. i appreciate and respect all opinions so please feel to contribute. 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 Halo, ZoneMaster, Z Custom, and NewClassic are four distinct product families. Power measurement are at 120 VAC: Its raw power is matched by elegant circuit design from audio guru John Curl in collaboration with CTC Builders. Unbalanced: 1 V Frequency Response. Frequency response: 20Hz–20kHz, +0/–0.25dB; 5Hz–100kHz, +0/–3dB. 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. 0.1% THD, RMS continuous power, (39.9 kg), Power Requirement 4 rack space chassis with rear carry handles. Although price isn’t indicative of which would be better, a 3b3 for only $400 more than the A21+ sounds like a better deal. As far as what the A21+ sounds like, that's anyones guess as I doubt many have heard it yet. > 80 dB at 1 kHz audio output, I have read very good things about that amp and am very happy with the A51 I … 1, audio input, Power Output – Stereo Mode (0.1% THD) 250 Watt - 8 Ohm - 20 - 20000 Hz - THD 0.2% - 2 channels, 0.2 %, I tried one at home once for a couple of days with my Vandersteen 3A speakers and it sounded terrible. Direct Coupled - no capacitors or inductors in signal path. Unbalanced: 33 kΩ Details like soundstage depth, focus, and texture is where the A 21+ puts real distance from the A 21. +1 for John Curl’s linear design Parasound A21+ The Parasound A 21+ offers a lot of low-distortion power and isn’t fazed by impedance’s as low as 2 ohms.—John Atkinson Sounds like the MA gx300’s with ribbon tweeters need some grunt, judging by HiFi News and record Review "Bear in mind you will need a good amp to drive them." 4 Ohm, 8 Ohm. 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. ", Positive Feedback January 2019 Current capacity: 60 amperes peak per channel. audio line-in, ", Home Theater Review Feb 2020 I have been fortunate to have Parasound gear in my reference system for many years, including the Parasound P 3 and the Parasound Halo A21 Amplifier. Rack mount hardware is included. Channel Type. This RA number must be clearly marked on the outer carton only. Sidebar 3: Measurements I tested the Parasound Halo A 21+ with my Audio Precision SYS2722 system (see the January 2008 "As We See It"). Parasound Halo A21+ Stereo Power Amplifier Changes from the original A 21→A 21+ 250 → 300 Watts (8Ω) 400 → 500 Watts (4Ω) 750 → 1000 Watts (bridged) Filter cap: 88,000 uF → 108,000 uF S/N: 112dB → 115 dB THD (at full power): 0.2% → 0.1% Crosstalk (20kHz): 63dB → 70dB Transformer size: 1.2 kVA → 1.3 kVA Weight: 60 LB → ALL RIGHTS RESERVED. Anyone in the market for a stereo power amp would be well advised to consider the Parasound A 21+, especially those who believe that they must spend more. Parasound Halo A21+ Stereo Power Amplifier. The new Parasound Halo A 21+ and A 23+ employ higher-capacity power supplies to increase output from 250 to 300 watts and 125 to 160 watts respectively. - Parasound Halo A21 - Wyred4Sound ST-500 MKii with wire/post upgrade - Odyssey Audio Stratos Extreme - Odyssey Audio Kismet - Benchmark AHB2 amp First choice is Parasound Halo A21. XLR x 2, Automatic turn-on by 12 V trigger or audio sensing. "Highly Suitable for Driving Anything" Output Impedance / Channel. 8 Ohm, 1, I preconditioned the amplifier by operating it at one-third the specified power into 8 ohms for an hour. © 2021 CNET, A RED VENTURES COMPANY. trigger, RCA x 2, The Design of the Parasound Halo P 5 Preamplifier. We delete comments that violate our policy, which we encourage you to read. 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