I think a tubed pre-amp with the XPA amps would be a great place to start. After 15 years of devoted service, Parasound has retired its beloved Halo A 21 amplifier. "The Parasound Halo A 21 and A 51 are top rate amplifiers at a great value. I honestly don't know. 2014 (?). "Close Enough to … After auditioning several amps both recently and over the years I decided to stay with the Parasound … Competition and ComparisonsIf you're considering the A 21+, you're more than likely looking for an amp that is also Class A/AB. Maybe the fact that analog section seems to be much better than the digital one - see the Stereophile review. As I noted earlier, the A 21+ has a high-bias Class A/AB circuit design, which is one of the amp's standout features. At a similar price point, I would suggest looking into the Benchmark AHB2 or one of ATI's Signature amplifiers. You'll automatically be entered in the HTR Sweepstakes, and get the hottest audio deals directly in your inbox. You could hear noise and slight hum if the ear was about 50cm from speakers with some 88dB/W/m sensitivity. It's unlikely you'll find a pair of speakers the A 21+ struggles to power. These thoughts are perfectly appropriate when nothing but a plus sign has been added to the model name. @zerodeefex warned me about the Parasound amps. I am now scared. This lack of sparkle on the top end makes it an ideal candidate for those who like to listen for long periods of time. I do have the Parasound preamp slated for review. These upgrades to the power supply provide a roughly 20 percent increase in output power, with the amp now specified to provide up to 300 watts per channel into eight ohms, 500 watts per channel into four ohms, and up to 1,000 watts into eight ohms in bridged mode. The A21 is still a very good amp but I am surprised that Parasound has not upgraded it. problem with channel imbalance induced by used Alps pot. Essentially, it’s trying to cram two of their top-of-the-line mono amps into a more attractive package – in both size and price. but has been updated with a few new features, ca. Parasound A21+ power amp $3300 - 300 watts of A/B, but stays in class A for most of your listening. f you have the room, I'd put my the XPA-1s up against the Parasound A21 any day of the week. It's a 2 channel amp, 250 watts into 8 ohms and 400 watts into 4 ohms. Parasound may have been thinking along these lines when they engaged the well-known amplifier designer John Curl to create their new five-channel amp, the Halo A 52+ ($2,995). In a sense, you're getting an A 21, but with more of everything. You must log in or register to reply here. No shortage of machismo – it has to be an American power amp, right? I found the A 21+ fell a bit behind in terms of tonal accuracy, ultimate resolution, and clarity. This amplifier is a beast and, because of that, I suggest you get help when unboxing and setting it up. The Halo JC 5 stereo amplifier was a culmination of many requests from Parasound customers looking for something with the performance of their JC 1 Mono amp with space and cost savings of a stereo amp. All of its high-power output is rated to be stable with speaker impedance dips down to 1.5 ohms. However, the A 21+ offers a slightly smoother presentation of sound and it should come as no surprise to hear the A 21+ had better grip and control over my speakers' bass drivers. Parasound Halo, ZoneMaster, Z Custom, and NewClassic are four distinct product families. With its high-quality chassis, thoughtful circuit design, and excellent sound quality, the A 21+ offers an impressive value proposition. Crosstalk and signal-to-noise ratio see improvements too, now rated at 70dB and 115dB, respectively. The amp is still offered in both black and silver finish options, and although at first glance the chassis appears unchanged, a few upgrades have occurred there as well. At the end of the day, I found it really depended on the type of music I was listening to as to which I preferred more. Parasound calls the Halo Integrated … A21+ is supposed to have a few improved components over the A21 but the Parasounds will probably never measure as good as the Benchmark or good implementations of Class D. However, some people prefer it for its sound signature not as a totally transparent amp which the others would be. But what, exactly, do you get for that extra coin? 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? Curl also took a hard look at the A 21's circuit design and made several modifications, all aimed at improving performance and increasing sound quality. PS: the A21 is the 250wpc @ $2500, the A23 is 100wpc @ $999. JavaScript is disabled. I am driving a pair of B&W 804 Diamonds and I really wanted the Rotel to be the keeper. Is the A21 the same as the A23 only with more power? The amp came out around 2008 (?) Submit a ReviewContact Editorial Policy About us, Privacy Policy CCPA / GDPR Affiliate policy. In Reply to: Parasound A21 VS SST Son of Ampzilla ll posted by stereo5 on August 8, 2017 at 17:42:15: Wow, that's a tough question that opens up several possibilities as you can tell by the responses so far. Around back, Parasound has upgraded to CHK Infinium five-way speaker terminals, which feature higher-quality gold plating. Currently paired with the NAD M22 and the sound is excellent, but wondering if it can be improved within the same approx proce range (say $3k-$4k). It was nothing to call home about. The Pragmatists at Parasound chose to re-spin the A21 amplifier into the A21+. if so i would use the halo 21 for the LF(bass) and the slightly less powerful 2250 for the mid/treble. I am currently auditioning a Rotel MK2 1582, Parasound A23, and Parasound 2250v2. As a previous long-time owner of the original A 21, I feel confident in saying the A 21+ does in fact sound similar. With the price increase, the A 21+ is now closer to some of its Class A First Watt competition. A used Pass Labs vs. Parasound Halo A21 - kelvinkwong0908@hotmail.com - Amp/Preamp Asylum Amp/Preamp Asylum ... it may be better especially in transparency. When you buy through links on our site, we may earn an affiliate commission. From that point onward, the amp switches over to Class AB operation. 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. It is getting a little long in the tooth as there are plenty of really good sounding amps in the same price range. Using the Parasound amp allowed my speakers to portray every aspect that I had come to expect without adding any noticeable sign of distortion or flaw." "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." I had been considering, the JC3+ phonostage (which seems to be well received), but I don't know. The measurements are generally very similar to mine performed on the older A21. While the upgrades do come with a slightly higher asking price, I found, in practice, these changes make a meaningful enough difference to justify the new cost. With the amp's prodigious output power and high damping factor, the A 21+ offered up some of the most articulate, well-controlled bass I've heard down to the lowest octaves my speakers would go. Amir's superb review of the AHB2 is great, and I have fond memories of the Benchmark DAC1, so as a company I'm leaning that way. Like its predecessor, the A 21+ still punches well above its price point in overall performance and is still an amplifier that does most things right. I just wish it didn't have that "THX certified" logo on the front, kind of cheapens the look imo. You could hear noise and slight hum if the ear was about 50cm from speakers with some 88dB/W/m sensitivity. While six watts may not seem like much, that's enough power to drive all but the most inefficient speakers to reasonably high SPLs for the majority of music or movies you'll likely listen to. To improve signal path and consistency over time, the A23+ also utilizes updated heavy-duty speaker terminals and internal gold-on-gold audio connections. My qualified guess is that the integrated is worse than A21. The Rotel sounded very neutral and low. Subjectively, it was more noisy (worse S/N). Its replacement, the Halo A 21+, is priced a little higher at $2,995. I've considered trying the ZBOX for my fronts. Parasound classifies the amp's topology as high-bias Class A/AB. Item: PARASOUND A21 Power Amp & P5 Pre-Amp Location:PERTH.WA Price: $3499 for both Item Condition:good- couple scatches top o fAMP Fascia Clean (PRE-AMP Mint AsNEW) Reason for selling:Deciced to stick to Tube AMP Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: A21:Continuous power output (20 Hz - 20 kHz): 250 watts RMS x 2 at 8 ohms, 400 watts RMS x 2 at … Is this a good deal? Each of these stages features its own independent power supply and, in John Curl fashion, a strong emphasis on reducing higher-order harmonics has been made in the amp's circuit design, which Curl deems as the most detrimental type of distortion for sound quality an amplifier can have. Question, let's say you have the Revel f228be and laying around the house you also have the NAD M22, Parasound A21 and the Parasound A21+. Positive Feedback review - REVIEW. After 15 years of devoted service, Parasound has retired its beloved Halo A 21 amplifier. I, for one, found the comparisons to Class D and to much pricier Class AB amplifiers enlightening. Measuring conditions written in the graphs. Thanks, just noticed that's a pre-amp. We can’t remember the last time we reviewed a product such as this with bass and treble controls. Parasound's Halo JC5 conforms to some of these stereotypes, but there's more to it than just slam There's nothing terribly unusual about a big, hefty US-made power amp: after all, it's almost an archetype of what we think the US high-end is all about. A21+ is supposed to have a few improved components over the A21 but the Parasounds will probably never measure as good as the Benchmark or good implementations of Class D. However, some people prefer it for its sound signature not as a totally transparent amp which the others would be. Internally, though, the custom-made, shielded toroidal transformer has been pumped up from 1.2 to 1.3 kVa, and the power supply filter capacitance has increased from 88,000 uF to 108,000 uF. You get a switchable phono stage, a headphone output and even tone controls. To facilitate this, the designer of the A 21, the legendary John Curl, was brought back in to make the necessary modifications. I also measured Parasound P5 preamp. And despite what the purists say, on occasion, for example when playing a poorly engineered recording, they can be useful. Or is it a different sounding amp? Parasound also redesigned the input board layout of the A23+ to improve the cross-channel crosstalk (70 dB vs 63 dB at 20 kHz). Audio Advisor sells the Parasound A21 for $2299.00. The new design halves THD, which is now specified at 0.1 percent. The Parasound 2250 is one quality amp. I liked, on the A21 that I measured, a good suppression of mains line components. My speakers are Paradigm Prestige 75F. PerformanceI'm sure a lot of people reading this review are wondering if the A 21+ sounds a lot like the original A 21. For my 2 channel system, I have the A21 with the P5 pre-amp along with the JC 3 Jr. phono preamp and love them all. "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 former tried and true, untouchable value and staple of their product line, the A21, had set the bar for value vs. performance in both the HiFi and Professional audio worlds. However, I also feel confident in saying the sound is not a carbon copy. However, it seems to me that regarding measurements the A21+, according to Stereophile plots, is a step back. Specifically, the A 21+ offers more impressive dynamics, a more accurate stereo image, wider stereo separation, and I heard more impressive control over my speakers' drivers on a regular basis. Either way, you get a fully transferable Emotiva 5-year warranty and you can still pocket hundreds of dollars. The Parasound may have a lower noise floor and lean to the warmer side of neutral which some(me also) perceive as more musical. For a better experience, please enable JavaScript in your browser before proceeding. Class A operation often imparts a particularly sweet, smooth, and organic sound signature, and the A 21+ definitely qualifies for these sonic traits, with treble frequencies in particular rendered smoothly and grain-free. It's also bulky in size, measuring in at 17.6 inches by 7.75 inches by 20 inches. Since Rotel and B&W are synonymous and the amp looks bad ass (matches well with my Marantz 7170). Your support is greatly appreciated! At first look the Parasound Halo A 21 is an appealing and robust amplifier accented by brushed metal finish. Swapping the Parasound in for the $20k Class AB Audio Research Ref 210 tube and $40k Class AB MBL 9008 solidstate monoblocks that are my references was somewhat less of a horizon-lowering experience than I anticipated. With that said, I found the most impressive part about the A 21+ was how it handled the bottom end. Matched JFET inputs, MOSFET drivers, and high-current bipolar outputs contribute to its exceptional performance. CES Trends: MiniLED and is it Better than OLED? The Parasound 2250 V.2 "new classic" -- 275wpc Stereo Power Amp is ON SALE for $999, down from $1395. It was quite good, see attached plots. They can be switched out of the signal path when not needed, giving a slightly clearer sound. However, if judging the A 21+ on its outward appearance alone, it would seem not much has changed. The A21 is the two-channel version of Parasound's benchmark A51 five-channel amp, which the May 2003 issue of DVD Etc. So is the Emotiva XPA-2 but just less expensive. Halo has earned honors and awards that are unmatched. The LED notification lights cannot be dimmed or turned off when the amp is operating. The A21 has more power than I need, which is perfect, just in case I want to really crank it up. The A 21+ utilizes JFETs for the input stage, a MOSFET driver stage, and uses 16 beta-matched bipolar transistors for its output stage. But what, exactly, do you get for that extra coin? In practice, this means the amp is biased to output a little over six watts per channel of pure Class A power. Unless I'm mistaken, I could run through the ZBOX to implement tube sound. Subjectively, it was more noisy (worse S/N). any chance you also measured parasound hint? While the A 21+ was here, I was able to compare it to my First Watt J2. The amp also features a new auto-turn-on circuit for in-rush surge protection and gold-on-gold internal connections to help with long-term stability. Due to its design, the amp is always drawing power when turned on and needs to dissipate a lot of it as heat, so I suggest you place the amp in a well-ventilated area. In practice, this means the amp is biased to output a little over six watts per channel of pure Class A power. An amp that will stay in your system for years. PARASOUND A21 AMPLIFIERS DESCRIPTION Halo A21 Two-Channel Amplifier 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 Current capacity: 60 amperes peak per channel Power bandwidth: 5 Hz - 100 kHz, +0/-3 dB at 1 watt 60 amps current. Really scared. All the amp needs is a little less grain, a little more warmth and a … They're now made from brushed aluminum to match the rest of the faceplate. Anyone have measurements of the A21+? Bass performance from the A 21+ is as good as I've heard from any amplifier near its price point and even competes with many amps costing far more. This does not seem to appear in the measurements referenced by Pavel. If bass performance is of utmost concern, the A 21+ should be on your shortlist of amps to consider. Those shopping for a stereo amplifier in this price range should give the A 21+ serious consideration. PC --> Topping D90 --> *Denafrips Hyperion* and Schiit Vidar --> Magnepan 1.7i and *Tekton Lore Reference*. The amp's size, weight, and heat output could pose potential installation problems, especially for those looking to place it in a cabinet or enclosure. After almost 2 years, local shops are still trying to fix the Goldmund and the A21 has done a wonderful job in my system. Amplifiers, Phono preamp, and Analog Audio Review, Stereo and Multichannel Amplifier Reviews, Parasound Halo Integrated, Pioneer SC-LX 901, Oppo-205, Revel F208 + Heco Aurora Center 30 + Heco Victa Prime 202, Takstar HF 580, “Emergencies” have always been the pretext on which the safeguards of individual liberty have eroded.”. I also have the A52+ driving 5 of the main channels in my HT setup. Unboxing and setting up the A 21+ may prove to be a difficult task for some. My XSP-1 has a processor loop. My qualified guess is that the integrated is worse than A21. Additional Resources• Visit the Parsound website for additional information.• Parasound Halo P 5 2.1-Channel Preamplifier Reviewed at HomeTheaterReview.com.• Parasound Announces HINT 6 Integrated Amplifier at HomeTheaterReview.com. Maybe larger soundstage, fuller/richer mids. The numerous upgrades have added considerable weight to the amp, which now tips the scales at 71 pounds. But it may lack the tube-like quality of A21. Additionally, Parasound's A21 just won a… After my 15 year old Goldmund amp broke, I bought an A21 in 2015 to fill the need until either the Goldman could be repaired or replaced with a top of the line power amp. Thanks. Its replacement, the Halo A 21+, is priced a little higher at $2,995. He owned an A21, the better more powerful version of this amp. Both are excellent amplifiers in their own right. If not, I'd go XPR-2. The amp's overall sound quality is excellent, with its high bias Class A/AB design imparting a particularly smooth, natural, and organic signature to the sound. One of the biggest gripes owners had with the A 21's chassis was the plastic end caps found on the faceplate. i appreciate and respect all opinions so please feel to contribute. Both balanced XLR and unbalanced RCA inputs are available, with each channel still featuring its own independent gain control and RCA signal loop outputs. magazine said hit the "proverbial home run." I just figure if the Parasound Halo Ax1's were fully balanced, differential designs, Parasound would explicitly advertise it as so. The A 21 amplifier is loaded with usable … Parasound classifies the amp's topology as high-bias Class A/AB. When you consider all that's included in the price, the A 21+ continues the high value proposition of its predecessor. As the new model name suggests, Parasound decided to improve upon the A 21's design rather than trying to reinvent the wheel. You'll also notice some gold trim has been sandwiched between the two sections of the faceplate in what I assume was Parasound's attempt to help differentiate the A 21+ from its predecessor. So which amp did you go with and why? The A21+ results look worse (to my eyes) and also distortion seems to be higher than that of A21 in my measurements. ConclusionThe A 21+ builds upon its predecessor's design, offering upgrades that elevate an already stellar amplifier to a new level. In fact, these are the same speaker terminals found on the company's more expensive JC 5 amplifier, though only a single pair of terminals is included per channel, so those looking to bi-wire their speakers will need to consider a different amp. Parasound P5 preamp measurements View attachment 83198 All measurements into 4ohm load. I had it here, but did not made any meaningful measurements. A Parasound NewClassic 2250 2 channel and a Parasound NewClassic 5250 5 channel were replaced with a Parasound Halo A21 and Parasound A52+ respectively. https://www.stereophile.com/content/parasound-halo-21-power-amplifier-measurements, https://www.stereophile.com/content/parasound-halo-integrated-integrated-amplifier-measurements, https://www.soundstagenetwork.com/i...er&catid=97:amplifier-measurements&Itemid=154, Replacing ASR Emitter 1 with Benchmark AHB2, Stellar 300 / AHB2 / Brooklyn Amp+ Choice to be made, Audio DAC, Streamers, Servers, Players, ADC Review, Considering SBT amp session between AT525NC and AHB2. Amp Parasound Zamp V.2 Ipod Classic Bocinas Advent Calypso. Thanks for posting that, I have not seen this A21+ review yet. It fills the hole that was left in 2012 when Parasound discontinued the $2,500 A 52. Any comments on either welcome. Parasound Halo A 21+ Stereo Amplifier Reviewed. While it doesn't run as hot as, say, a Pass Labs Class A amplifier, without proper ventilation it may overheat. Sony 360 Reality Audio Updated and Expanded, McIntosh Makes 2021 Auto Debut with New Jeep Grand Cherokee, Pro-Ject’s Beatles-inspired Turntables Pay Tribute to the Band, 16 Terms You Need to Know Before Buying a Blu-ray Player, Bowers & Wilkins VM1 Speakers and AS1 Subwoofer Reviewed, Sony VPL-VW995ES 4K SXRD Projector Reviewed, Seymour-Screen Excellence Now Shipping TAM-1T Film Screen, Pass Labs X250.8 Stereo Amplifier Reviewed, Parasound A31 Three Channel Power Amplifier, Parasound Halo P 6 Preamplifier & DAC Reviewed, Parasound Halo Integrated 2.1-Channel Amplifier Reviewed, Parasound 275 v.2 Stereo Amplifier Reviewed, Parasound Halo C 2 Surround Processor and A 51 Multi-Channel Amplifier Reviewed, Parasound Model 5250 v.2 Multi-channel Amplifier Reviewed, Parasound Halo P 5 2.1-Channel Preamplifier Reviewed, Parasound Announces HINT 6 Integrated Amplifier. As the... KONKA Announces Three New Android TV Series for 2021 Lineup. I measured Halo A21 in January 2019. Also, the A21/A51 in stealth black is so damn sleek. Build quality of the Parasound A 21+ is mighty impressive and handsome enough to fit into most décors. You could hear noise and slight hum if the ear was about 50cm from speakers with some 88dB/W/m sensitivity. Not sure about the bass performance comparison between the two. So, depending on the power needs of your speakers and how hard you drive them, much of you listening will be done in pure Class A, with Class AB power provided only in particularly dynamic moments. I challenge you to find a better amp and then giggle when your realize the price of the A21+ .

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