Instead of re-inventing this wheel, Parasound chose to refine it. Power Output – Stereo Mode (0.06% THD) 160 watts x 2, 8Ω both channels driven 240 watts x 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…. Review: James Parker, Lab: Paul Miller | Dec 1, 2018 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 …   Â, It is difficult to pick out a handful of standout tracks on the A21+. Competition and ComparisonsIf you're considering the A 21+, you're more than likely looking for an amp that is also Class A/AB. It's an easy piece to love. It separates left to right and front to back on the soundstage, gives each instrument enough air and clarity that they each occupy their own space. The New First Watt SIT-3 Stereo Power Amplifier by Nelson Pass! 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+. If they were going to do that, it was better to offer customers something more that would keep the reputation the A21 worked so hard to build. 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. High Points. 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. It is worth a mention that when using a DAC such as the Bricasti M1 directly driving the A21+, there is a long-term benefit to proper gain adjustment. While this may not seem like much, whether having a relaxing Jazz listening session, or living through a dynamic orchestra piece that drops to a violin solo in pianissimo, I believe this class A power is largely responsible for the extremely black background and inner resolving power of the A21+. For example: <0.2% to <0.1% represents a 6dB reduction in distortion putting the THD of the A21+ at full power 60dB less than the music. All components in BOLD are loaned; all components in standard face are owned by me. I haven't done the same review (Outlaw 100-watter vs the A51's 250) on my new speakers, but I'm happy to report that I love my new speakers (Focal BE 1027) and they have wowed everyone who has heard them. Parasound states that it is not advised to use both the balanced and unbalanced inputs at the same time, which is cumbersome in my system. Maak een luisterafspraak. In Richard Strauss' most recognizable Also Sprach Zarathustra "Einleitung" (Guild B0000542IO), the orchestral and pipe organ undertones through each wave of growing intensity firmly grounded the suspense, never losing its anticipatory feel that helps make this representation of a sunrise legendary. Moves the sound through the system with ease, power and fluid control. When I reached out to Parasound for some answers to all of this I was pleasantly surprised when the President and CEO Richard Schram personally took the time to answer. Parasound did a thorough job in writing the manual for the A21+. It is odd how small changes can make a big difference, which will become a common theme as we wear on. Those shopping for a stereo amplifier in this price range should give the A 21+ serious consideration. Everywhere you look across the audioscape, entropy has a way of tearing apart all that is good. Parasound classifies the amp's topology as high-bias Class A/AB. All Rights Reserved, A Q&A with Estelon - A Decade of Loudspeaker Excellence, AGD Productions - The Audion Monoblock Amplifier, KECES S300 Power Amplifier and S3 Preamplifier, Bricasti Design MDx Board Update - Keeping Digital Customers Future Ready, The Clarus Duet - A Journey Though High-Current Line Conditioning. Parasound Halo A21 $2495 An excellent Class AB stereo transistor amp, designed by the redoubtable John Curl, capable of 250Wpc into 8 ohms (400 into 4 ohms). Finally, Richard states that the class A power available from the A21+ is a little over six watts per channel. I loved its big, rich sound -- and with the stereo version, the A 21+ ($3150), the A 1 series has received universal acclaim for providing exceptional performance at real-world prices. The remainder of this album was no less wonderful through the A21+, including the Cello solo in Don Quixote, conducted by Djong Victorin Yu, James Kreger – Cello. I have the A21 along with a Parasound Halo preamp for my 2-channel system for music - pure bliss. Power Output – Stereo Mode (0.1% THD) 300 watts x 2, 8 Ω both channels driven 500 watts x 2, 4 Ω both channels driven Power Output – Bridged Mode (0.1% THD) 1000 watts x 1, 8 Ω Bridged 4 Ω operation is not recommended More manufacturers should do this as it only assures the highest performance from their product. It is enough "more" to justify the significant price increase as the original A21 cost $2499 USD and the A21+ cost $3150 USD. Esperanto Audio Blue SPDIF, Tellurium Q Black XLR balanced interconnects, Audioquest Type 4 loudspeaker cables, Pangea AC9 power cable for the A21. 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. Note: Price changes effective January 1, … A front-end that tilts from neutral, or was never paired with an amp capable of reproducing its anomalies could cause false blame to be applied to the A21+ if issues are heard when added into a system. 14 dagen lang gratis retourneren. As a final note: In a majority of cases, the gain settings on the rear panel should be set to maximum. Find helpful customer reviews and review ratings for Parasound - Halo A21 Two-Channel Amplifier (Balck) at Amazon.com. This is significant since the original A21 already had enough control to reel in even the most unruly loudspeakers. The Halo A21+ (moving forward just the A21+) is dense. The John Curl designed A21 was in the Parasound line from 2003-2018 so I knew it was a very stable product with many sterling reviews!! Richard from Parasound was also kind enough to explain that over its fifteen plus year tenure the A21 never saw a price increase while the cost of components has significantly risen. The replacement for the Halo A21 is the aptly named A21+ and features improved specs across the board with nearly identical circuit topology. I received the A21+ in the silver finish which masks the gold accents a bit on the front panel but makes the unit no less handsome. Build quality of the Parasound A 21+ is mighty impressive and handsome enough to fit into most décors. To facilitate this, the designer of the A 21, the legendary John Curl, was brought back in to make the necessary modifications. What better defines a pragmatic approach to business than the thought: Let's build our products to the highest standards, make them available for all, and let them speak for themselves.   Â. While it doesn't run as hot as, say, a Pass Labs Class A amplifier, without proper ventilation it may overheat. Legendary Bassist Victor Wooten's solo bass work in A Show of Hands has always provided a challenge for loudspeakers and amplifiers alike. One of the biggest gripes owners had with the A 21's chassis was the plastic end caps found on the faceplate. 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. 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. The component under review, the $2000 Halo A 21 stereo amp, is slotted in further down the Parasound line. There are knobs for gain, and small switches that allow selection of balanced/unbalanced inputs and bridged/stereo operation. If bass performance is of utmost concern, the A 21+ should be on your shortlist of amps to consider. 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. Your support is greatly appreciated! 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. – read the review at What Hi-Fi? Diomede - Floor standing 4-way, dual 10" custom loudspeakers, Vegatrons - Floor standing 3-way 10" custom loudspeakers, Metals - Floor standing 3-way 8" custom loudspeakers, Tenacious 3 - Floor Standing 3-way dual 5" custom loudspeakers, RHTB - Stand Mounted 2.5-way dual 5" custom loudspeakers, "Esperanto Paralanto" - STand mounted 6.5" 2-way custom loudspeaker, Bricasti M1 DAC , Parasound Halo P6 Preamp/phono/DAC, Parasound Halo A21+ amplifier, Parasound Halo A21 amplifier, and Marantz SR7000 Reciever.Â. 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." I love my A21, but looking down from the canopy of a Giant Sequoia, the A21+ offers more sonically speaking. Through nearly 40 years of unrelenting pressure, like tectonic plates pushing against each other terra-forming the Earth, Parasound has earned the privilege of defining a good part of today's sonic landscape. "Classical Thump" blew me away thanks to the A21+'s control and accurate timbre. Both are excellent amplifiers in their own right. The LED notification lights cannot be dimmed or turned off when the amp is operating. When used in pro-audio applications, those setting up and balancing such systems already know what to do. ConclusionThe A 21+ builds upon its predecessor's design, offering upgrades that elevate an already stellar amplifier to a new level. Alleen bij ons 5 jaar garantie! With the inclusion of digital processing and bass management, the Halo P 5 is a bargain, competing with preamps costing many times more. Review after review, award after award seems to naturally follow a company who has put value without compromise first as defined by the very products they make. If you were alone, rocking out to your favorite Prince album at 90dB in your living room thanks to a dentist appointment your significant other had to keep, any distortion that is there would be at a level of just 30dB which is quieter than a whisper. It never lost its integrity and provided an awe-striking feel as an entire orchestra steps out of the way of a single instrument carrying the power, range, and impact of a single chord it took the whole orchestra to build. Wielding 71 pounds is certainly an achievable task however maneuvering it with attention to the heat-sinks, rear panel, front panel, and the realization that gravity is doing all it can to assure you a crushed foot becomes daunting. On the A21+, the experience was simply the best I have heard it. Submit a ReviewContact Editorial Policy About us, Privacy Policy CCPA / GDPR Affiliate policy. Positive Feedback, A Premier High-End Audio Magazine – articles and reviews of loudspeakers, amplifiers, streamers, servers, headphones, DACs, preamplifiers, cables, tweaks, CD/SACD players, turntables, cartridges, tubes, music, and more! From that point onward, the amp switches over to Class AB operation. I cannot go out on a limb regardless of my excitement and say the A21+ preformed as a legitimate top-tier amplifier that easily caries its price tag can, but I can say it makes the difference a game of inches. You'll automatically be entered in the HTR Sweepstakes, and get the hottest audio deals directly in your inbox. Two-channel Upgrades were made to key electronic components throughout. This is not the case with Parasound. As good as the A 1 series is, for those who want something better Parasound has … While an average volume from your listening position of 90dB is quite loud, the A21+ would simply be purring along, nowhere near its maximum power. As a kid reading those Audio Advisor catalogs, you idolize them a bit and hope to have their gear one day.   Â. 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. 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. Though not the last word in solid-state amplification, the A21 "U Can't Hold No Groove…," and "Overjoyed" were exceptional in all aspects which allowed Victor's message to come through his 4-string and into every little hair on the back of my neck. This lack of sparkle on the top end makes it an ideal candidate for those who like to listen for long periods of time. The new design halves THD, which is now specified at 0.1 percent. Since the increase in power over the A21 is akin to adding another cup of water to what is already a sizable lake, I was very titillated by the reduction in distortion over the A21 that was stated to have <0.2% THD at full power. To keep the A21 profitable, Parasound would have had to increase its price 20%. While the A 21+ was here, I was able to compare it to my First Watt J2. Nonetheless, it is still very much a Curl design, with his customary J-FET input stage, MOSFET driver stage, and beta 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." I could not make the A21+ less than enjoyable regardless of what I chose to play through it. His mastery combined with artistry provides lightning-fast transients, subtle finger-work, and heavy harmonics that can easily lack the flash-like quality of his slaps and rich tonal integration of the low E and A strings. It is because percentages are linear while Decibels, the number that represents how far below the music the distortion is in sound intensity, also representative of how we actually hear, are logarithmic. Speaking of: The new binding posts that are shared with their flagship stereo amp, the JC5, are fantastic. 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. Both balanced XLR and unbalanced RCA inputs are available, with each channel still featuring its own independent gain control and RCA signal loop outputs. The solo trumpet's bell clearly rung out true in texture and intensity, and the growing crescendo of the tympani was realistic as the instrument's heads splashed with excitement. "The Parasound Halo A 21 and A 51 are top rate amplifiers at a great However, if judging the A 21+ on its outward appearance alone, it would seem not much has changed. Sonically it is so neutral it effortlessly presents what is there. I digress… some of the differences between the A21 and A21+ were detectable out of the gate, while others were more subtle. 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. The A21 showed why mastery is important in any design work as John Curl created an affordable amplifier that was considered top-tier for over fifteen years! The numerous upgrades have added considerable weight to the amp, which now tips the scales at 71 pounds. When you consider all that's included in the price, the A 21+ continues the high value proposition of its predecessor. The A21+ boasts 300 watts per channel into an 8 ohm load, 500 watts per channel into a 4 ohm load, and a monstrous 1000 watts per channel into an 8 ohm load when both channels bridged mono. The integrity of the connectors was also improved, and critical AC wiring was re-routed along with the internal shielded signal cables. As a previous long-time owner of the original A 21, I feel confident in saying the A 21+ does in fact sound similar. 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. 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. It is very satisfying to forget I was listening through an absolute powerhouse and when I desired a light touch for delicate music, it was there. At first look the Parasound Halo A 21 is an appealing and robust amplifier accented by brushed metal finish. Furman 20A surge protector and noise suppression. As always this is a double edged sword. One cannot have it all for $2500 USD, and to have MB 100-like refinement with the control, neutrality, and drive of the A21 (and in total even further capability), the only logical choice would be the Bricasti M15 stereo amp at $18,000 USD. The Audio Note (UK) Oto Phono SE Signature Integrated Amplifier – An Affordable Masterpiece! The distortion is now over 70dB below "Raspberry Beret" which frankly, is not detectable by our ears. This effect was prevalent while cycling through loudspeakers, especially ones that were purposefully tuned in a certain manner for greater warmth, or apparent speed. Stereo amp, which now tips the scales at 71 pounds model name suggests Parasound... Improvements over long-lived predecessors heft over the A21, but with more of everything Infinium five-way speaker terminals which. Basic architecture and topology of the A21+ is capable of, it stands stout lists the dimensions as inches. `` Classical Thump '' blew me away thanks to the re-spin than raw.... 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