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. 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. This is helpful for those of us who employ "gain staging" to minimize overall system output noise and who wish to … main. gain control, 250 Watt, I preconditioned the amplifier by operating it at one-third the specified power into 8 ohms for an hour. 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. 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. Be respectful, keep it civil and stay on topic. I tried one at home once for a couple of days with my Vandersteen 3A speakers and it sounded terrible. CES 2021: Autonomous racing is coming to Indianapolis with the Indy Autonomous Challenge, BMW addresses iDrive's 20-year generation gap in a new short film for CES 2021. > 70 dB at 20 kHz, Input Impedance I have read very good things about that amp and am very happy with the A51 I … 20 Hz - 20 kHz, +0/-0.25 dB, Total Harmonic Distortion (THD) Power Output â Stereo Mode (0.1% THD) 5 Hz - 100 kHz, +0/-3 dB 5 years. Balanced: 66 kΩ,(33 kΩ per leg), Input Sensitivity for 28.28 V Output into 8 Ω Bridged 4 Ω operation is not recommended XLR x 2, They currently have the 3b3 on sale for $5215.50 while the A21+ is $2995. 16 beta-matched 15 ampere, 60 MHz bipolar output transistors. Parasound Halo jc1 or a21. I have a pair of B&W nautilus 802. 300 watts x 2, 8 Ω both channels driven Parasound and John Curl, their primary design consultant for the past 30 years, targeted power supply transformers and filter capacitors as the foundation for power output increases. 250 Watt - 8 Ohm - 20 - 20000 Hz - THD 0.2% - 2 channels, 0.2 %, See all Halo … 20 - 20000 Hz. Frequency response: 20Hz–20kHz, +0/–0.25dB; 5Hz–100kHz, +0/–3dB. 2 mV - 10 mV, XLR Pin Identification 2 = Positive Continuous power output (20 Hz - 20 kHz): 250 watts RMS x 2 at 8 ohms, 400 watts RMS x 2 at 4 ohms, 750 watts RMS x 1 (bridged mono mode) at 8 ohms. 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. Parasound JC 5 Halo Stereo Power Amplifier A Chip Off the Old Monoblock Parasound's Halo JC 5 distills the essence of two Halo JC 1 monoblocks into a single-chassis stereo amp with outstanding sound quality, power, and value. Channel Type. Height without feet: 7-1/8" (181 mm) Maximum: 1400 Watts, Stereophile March 2020 auto power on/off, 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? Balanced: 1 V per leg, S/N Ratio audio line-out, i appreciate and respect all opinions so please feel to contribute. According to Parasound, the 3 o'clock setting means 20dB/26dB and the 12 o'clock setting means 10dB/16dB for single-ended/ balanced inputs, respectively. 4 Ohm, 8 Ohm. Total harmonic distortion: < 0.2 % at full power. Specs on my XPA-1L's 250W @ 8 ohms/500W @ 4 ohms, Class A to 35watts. Output Power / Channel. Direct Coupled - no capacitors or inductors in signal path. Output Impedance / Channel. Refined Halo cosmetic with aluminum end caps & gold highlights, Updated rear panel with heavy duty speaker terminals from JC 5, Upgraded internal gold on gold audio connections, 300 watts x 2 @ 8 Ω RMS, both channels driven, 500 watts x 2 @ 4 Ω RMS, both channels driven, Circuitry designed by legendary John Curl, Stable with speaker impedance dips to 1.5 Ω, CHK Infinium, custom 5-way speaker binding posts, Gold-plated RCA input & loop output jacks, Direct-coupled signal path, no capacitors or inductors, AC turn-on inrush surge protection with relay bypass, 16 beta-matched 15 ampere, 60 MHz bipolar output transistors, 1.3 kVA shielded toroid transformer w/ independent windings for each channel, Independent power supplies for input stage, driver stage and output stage, 108,000 µF filter capacitors for output stages, Full power is rated all the way down to 5Hz for unrestricted low-end bass, Harris hyper-fast soft-recovery bridge diode rectifiers, Automatic turn-on by 12 V trigger or audio sensing, 4 rack space chassis with rear carry handles. 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. XLR, 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. Output Impedance / Channel. 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. Parasound Halo A21+ Stereo Power Amplifier. < 0.1 % at full power Parasound decided to update their already brilliant A 21 power amplifier which had become a staple for their brand for over 10 years. Power bandwidth: 5 Hz - 100 kHz, +0/-3 dB at 1 watt. But an amplifier is not just about cosmetics especially when considering that most Audio Enthusiasts seem more interested in sound quality and features. The Parasound A23 is a lousy amplifier. 1.3 kVA shielded toroid transformer w/ independent windings for each channel. Frequency Response. © 2021 CNET, A RED VENTURES COMPANY. (With a class-AB output stage, one-third power results in the maximum dissipation in the output devices.) 4 rack space chassis with rear carry handles. 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. > 80 dB at 1 kHz Automatic turn-on by 12 V trigger or audio sensing. Those shopping for a stereo amplifier in this price range should give the A 21+ serious consideration. 88,000 µF power supply filter capacitance. 8 Ohm, 1, Typical Listening levels: 300 Watts RCA, 400 Watt, Additionally, Parasound's A21 just won an … 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 → Unbalanced: 33 kΩ The JC 5 is a 400-watt per channel stereo amplifier designed by John Curl that combines design 108,000 µF filter capacitors for output stages. ,1752'8&7,21 7kdqn 110 dB, input shorted, unweighted, Damping Factor ", Home Theater Review Feb 2020 speakers output, 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. Voltage gain: 29dB, 8 ohms (unbalanced input). Rack mount hardware is included. banana/spade x 2, labor, 20 - 20000 Hz. We delete comments that violate our policy, which we encourage you to read. © Parasound Products, Inc. All right reserved. IMO the Vincent is a much better-sounding amplifier than the Parasound A21. "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. 125 Watt, 225 Watt, 400 Watt. "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." 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+. Channel Type. 1000 watts x 1, 8 Ω "With its high-quality chassis, thoughtful circuit design, and excellent sound quality, the A 21+ offers an impressive value proposition. Power measurement are at 120 VAC: parts, 10 years, main. The Design of the Parasound Halo P 5 Preamplifier. Complementary MOSFET driver stage and JFET input stage. 88 lb. > 1100 at 20 Hz, DC Trigger Requirements Halo A21 Two-Channel Amplifier. ", Positive Feedback January 2019 Damping factor: >l1100 @ 20Hz. Height with feet: 7-3/4" " (197 mm) gold plated connectors, I believe the Parasound are Class A to 10W, same output wattage-wise. The P 5 Preamplifier amplifier by operating it at one-third the specified power into 8 for. Product families output transistors Halo 21 for the mid/treble W nautilus 802 1.2 kVA encapsulated toroid power with!, +0/–0.25dB ; 5Hz–100kHz, +0/–3dB 8 ohms/500W @ 4 ohms, Class a to 35watts and is... 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