I have read very good things about that amp and am very happy with the A51 I … "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." ! Balanced: 66 kΩ,(33 kΩ per leg), Input Sensitivity for 28.28 V Output into 8 Ω ,1752'8&7,21 7kdqn 115 dB, input shorted, IHF A-weighted "With its high-quality chassis, thoughtful circuit design, and excellent sound quality, the A 21+ offers an impressive value proposition. gold plated connectors, Parasound decided to update their already brilliant A 21 power amplifier which had become a staple for their brand for over 10 years. 8 Ohm, 1, ", Positive Feedback January 2019 Be respectful, keep it civil and stay on topic. Power Output â Stereo Mode (0.1% THD) I don’t know where you are located but AudioAdvisor is a US online dealer for both Bryston and Parasound. Page 18: Technically Speaking 4 Ω load and a 4 Ω speaker appears as only a 2 Ω load. I believe the Parasound are Class A to 10W, same output wattage-wise. Frequency Response. I actually purchased my A21+ from them. 4 Ohm, 8 Ohm. 1.3 kVA shielded toroid transformer w/ independent windings for each channel. Width: 17-5/8" (448 mm) © 2021 CNET, A RED VENTURES COMPANY. Procedure for Returning Your A 21 to Parasound for Service If Parasound determines that you should send your A 21 to Parasound, you will be given a Return Authorization (RA) number. Halo A21 Two-Channel Amplifier. Specs on my XPA-1L's 250W @ 8 ohms/500W @ 4 ohms, Class A to 35watts. Parasound Halo, ZoneMaster, Z Custom, and NewClassic are four distinct product families. (With a class-AB output stage, one-third power results in the maximum dissipation in the output devices.) Specs below. Power output: 300Wpc into 8 ohms (24.8dBW), 500Wpc into 4 ohms (24dBW), 1000Wpc into 8 ohms (bridged) (30dBW). 88 lb. Congratulations and Thank You for Choosing Parasound Your new Parasound Halo Series A 21 power amplifier presents the latest advancements ... PARASOUND A 21 SPECIFICATIONS _____ TABLE OF CONTENTS 1 A 21 Amplifier 19 17 13 12 15 14 11 10 8 7 5 4 2 1 3 6. 0.1% THD, RMS continuous power, Although price isn’t indicative of which would be better, a 3b3 for only $400 more than the A21+ sounds like a better deal. Damping factor: >l1100 @ 20Hz. The JC 5 is a 400-watt per channel stereo amplifier designed by John Curl that combines design > 80 dB at 1 kHz Voltage gain: 29dB, 8 ohms (unbalanced input). 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… 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. Independent power supplies for input stage, driver stage and output stage. Sidebar 3: Measurements I tested the Parasound Halo A 21+ with my Audio Precision SYS2722 system (see the January 2008 "As We See It"). if so i would use the halo 21 for the LF(bass) and the slightly less powerful 2250 for the mid/treble. Frequency Response. 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+. 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. Typical Listening levels: 300 Watts 2, 2, Input sensitivity: 1V per leg balanced, 1V unbalanced. 300 watts x 2, 8 Ω both channels driven 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's Halo A21 two-channel power amplifier has the brute force you need for ultra-realistic musical reproduction and hair-raising movie soundtracks. speakers output, © Parasound Products, Inc. All right reserved. This is helpful for those of us who employ "gain staging" to minimize overall system output noise and who wish to … 3 = Negative (Return), Dimensions The Design of the Parasound Halo P 5 Preamplifier. Frequency response: 20Hz–20kHz, +0/–0.25dB; 5Hz–100kHz, +0/–3dB. gain control, 250 Watt, Height with feet: 7-3/4" " (197 mm) Direct Coupled - no capacitors or inductors in signal path. 16 beta-matched 15 amp, 60 MHz bipolar output transistors. Rack mount hardware is included. Harris hyper-fast soft-recovery bridge diode rectifiers. 4 rack space chassis with rear carry handles. 5 Hz - 100 kHz, +0/-3 dB Output Impedance / Channel. RCA, See all Halo … 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 → > 130 volts per microsecond, Frequency Response Bridged 4 Ω operation is not recommended > 70 dB at 20 kHz, Input Impedance Idle (no music playing): 160 Watts Complementary MOSFET driver stage and JFET input stage. Parasound Halo A21+ Stereo Power Amplifier. 60 amps peak, per channel, Slew Rate 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. ALL RIGHTS RESERVED. 20 - 20000 Hz. "The A 21+ represents a new unparalleled value in amplifier performance. Additionally, Parasound's A21 just won an … 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. < 0.1 % at full power < 0.03 % at typical listening levels, Inter-channel Crosstalk 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. "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. > 1100 at 20 Hz, DC Trigger Requirements I preconditioned the amplifier by operating it at one-third the specified power into 8 ohms for an hour. 5 years. 88,000 µF power supply filter capacitance. 0.03 %, THX Ultra2 certified, 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. Those shopping for a stereo amplifier in this price range should give the A 21+ serious consideration. 20 Hz - 20 kHz, +0/-0.25 dB, Total Harmonic Distortion (THD) Unbalanced: 1 V +9 Vdc to +12 Vdc, 5 mA, Audio Trigger Requirements ", Home Theater Review Feb 2020 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. But I believe the last time I looked a couple retailers of Parasound were selling the older and lighter (60lbs) A21 at a discount and that amp sounds fantastic. " It has enough power to drive almost any speaker you can buy for under $10,000. Parasound Halo jc1 or a21. 20 - 20000 Hz. But an amplifier is not just about cosmetics especially when considering that most Audio Enthusiasts seem more interested in sound quality and features. Height without feet: 7-1/8" (181 mm) 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? i appreciate and respect all opinions so please feel to contribute. 1, audio input, While I would like to buy the jc1 monoblocks they take up a ton of space. main. (39.9 kg), Power Requirement 1000 watts x 1, 8 Ω audio line-in, audio output, 250 Watt, 400 Watt, 750 Watt. +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." Maximum: 1400 Watts, Stereophile March 2020 They currently have the 3b3 on sale for $5215.50 while the A21+ is $2995. 4 Ohm, 8 Ohm. Power bandwidth: 5 Hz - 100 kHz, +0/-3 dB at 1 watt. 16 beta-matched 15 ampere, 60 MHz bipolar output transistors. 750 Watt, 4 Ohm, 1.2 kVA encapsulated toroid power transformer with independent secondary windings for each channel. Balanced: 1 V per leg, S/N Ratio In fact I was in the process of reviewing the Thiel CS2.7 Floor-standing Speakers when the P 5 arrived. auto power on/off, Output Power / Channel. 1 = Ground (Shield) I tried one at home once for a couple of days with my Vandersteen 3A speakers and it sounded terrible. XLR x 2, audio line-out, - 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. I have a pair of B&W nautilus 802. 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. Output Impedance / Channel. The Parasound A23 is a lousy amplifier. main. 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. Amplifier Output Details. We delete comments that violate our policy, which we encourage you to read. 2 mV - 10 mV, XLR Pin Identification Channel Type. Total Harmonic Distortion (THD) 0.2 %. balanced audio input, This RA number must be clearly marked on the outer carton only. Discussion threads can be closed at any time at our discretion. 108,000 µF filter capacitors for output stages. Depth with cables: 21-1/2" (546 mm), Shipping Weight Details like soundstage depth, focus, and texture is where the A 21+ puts real distance from the A 21. 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. 125 Watt, 225 Watt, 400 Watt. "Highly Suitable for Driving Anything" 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. full audio band (20 Hz - 20 kHz), Current Capacity "The new Parasound A 21+ was impossible to fault... remarkably powerful, transparent and quiet. The component under review, the $2000 Halo A 21 stereo amp, is slotted in further down the Parasound line. Current capacity: 60 amperes peak per channel. Total harmonic distortion: < 0.2 % at full power. 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. banana/spade x 2, labor, 250 Watt - 8 Ohm - 20 - 20000 Hz - THD 0.2% - 2 channels, 0.2 %, Unbalanced: 33 kΩ IMO the Vincent is a much better-sounding amplifier than the Parasound A21. 500 watts x 2, 4 Ω both channels driven, Power Output â Bridged Mode (0.1% THD) Depth: 20" (508 mm) Automatic turn-on by 12 V trigger or audio sensing. The A 21+ is exceptional and provided an awe-striking feel.". Standby: 1 Watt 2 = Positive 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. As far as what the A21+ sounds like, that's anyones guess as I doubt many have heard it yet. Channel Type. trigger, RCA x 2, It will be a perfect match for your speakers. > 110 dB, input shorted, unweighted, Damping Factor 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. l bought the Parasound halo a21 and the differences of improvement in the sound quality are just unreal, it's like too good to be true, before the parasound i had an Emotiva XPA and after listened to the differences btw the emo and the parasound i got to the conclusion that emotiva made my speakers sounded so bad, the sound quality is night and day differences, I'm was shocked! 18: Technically Speaking 4 Ω speaker appears as only a parasound halo a21 specs Ω load '' Specs on XPA-1L. Carton only John Curl in collaboration with CTC Builders you can buy for under $ 10,000 guess i... Carton only in sound quality and features preconditioned the amplifier by operating at! 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