I asked Richard Schram some questions in general about the future of A/V, but also specifically about the JC 1+. For audio systems where the source and amplifier stack are in between the speakers, you would probably be using two of the 6 foot cables, at about $4,000 for the pair. RS: I am not familiar with Class J and found no mention in Wikipedia. Write Review; Digital Sources / DACs: 1600 DAC - Write Your Review: Amplifiers / Solid State Amplifiers: 2125 - Write Your Review: Classic 2250 - Write Your Review: HCA-1000 - Write Your Review: HCA-2200II - Write Your Review: JC 1 - Write Your Review: Model 275 - Write Your Review: Zamp v.3 - Write Your Review… It is worth reading cover to cover. They can be switched out of the signal path when not needed, giving a slightly clearer sound. But Pascal’s rating of 1500w 8 ohms, 2500w 4 ohms and only 600w 2 ohms revealed a very different objective. My setup required the long cable for the right channel. It is a little more than 70 dB lower than the signal peaks. One of the most important of the Parasound’s capabilities is in dynamics. A switch on the rear allows users to drop class-A operation down to 10W for placement in tight spaces. What I listen for with singing is that the sound maintains separation between the instruments and the voice. Still insignificant. No one felt they could ever be more impressed with one of their amplifiers, but the release of the JC 1+ monoblock changed that thinking. Parasound states that they use Nichicon Gold Tune capacitors for the power supply, and that although these capacitors are no longer generally available, Parasound has an exclusive contract with Nichicon to continue supplying these caps to them. Here is their answer: The patented design and construction of Clarus Cables are unique requiring sophisticated engineering and manufacturing equipment. Distortion plus noise was still quite low. Will Class D, G, H, and J amplifiers become the norm in receivers and power amplifiers compared to Class A and A/B? Since the core of these amps are the same how does one brand differentiate its amplifiers from another brand’s amplifiers using the same Class D module? Thompson engineered the boards, Crump chose the parts and "voiced" the finished product. See above. They are worth the price. Curl designed the circuits; Bob Crump and Carl Thompson, his partners at CTC Builders (makers of the custom-built Blowtorch preamplifier), did most of the hands-on work. This is evident by the … RS: The manufacture of FETs is a totally different process than bi-polar devices. Parasound says it is the result of challenging Curl to 'distil the essence of two JC1 monoblocks into a single chassis' in response to demand from customers who 'often tell us they love … Clarus cables are built in the USA rather than overseas. Among the upgraded parts used in the JC 1 are a 10-amp toroidal transformer enclosed in a steel canister filled with epoxy resin, Sanken output transistors, Harris hyperfast soft-recovery diodes, Nichicon Muse DC and local bypass capacitors, Nichicon Great Supply raw DC capacitors (for a total of 132,000µF capacitance), and Vampire continuous-cast copper wire and gold-plated OFC RCA jacks. Every part of a Clarus Cable is unique – there are no off-the-shelf components in the manufacturing. At 4 Ohms, the number of peaks was increased by two on either side of the fundamentals. The JC 1+ is even more powerful, at 450 watts. At 1 kHz and 5 Volts into 8 Ohms. I am waiting for the new Crimson RCA and XLR cables that will be available in the first quarter of 2021. At 4 Ohms, clipping occurred at 710 Watts. At 20 kHz and 4 Ohms, distortion was higher overall yet, with clipping at 790 Watts. At 20 Volts, 8 Ohms, IMD increased to 0.0204%. The JC 1+ power amplifier monoblock is their latest achievement, and it truly is an achievement to the highest degree. These would work well for lower powered, high-end amplifiers (e.g., 50 – 100 watts RMS into 8 Ohms) such as Pure Class A tube products. The difference between the 2. “Let our rigorous testing and reviews … Parasound … No one felt they could ever be, Parasound, builder of preamplifiers and power amplifiers, was started in 1981 by Richard Schram, in San Francisco, California. Using 4 Ohms impedance at 20 Volts, there were nine side peaks on the right side, and they were higher. I recently tried some generic speaker cable. Will the latest transistor technology (stacked Nanosheet FETs) provide audible differences from conventional bipolar and Mosfet/JFet technology? We remain committed to vinyl. In this case, I wanted to be able to discern individual voices of the girls, among the background music. They celebrate their 40th year, next year, in 2021. Using 19 kHz and 20 kHz sine waves at 5 Volts into 8 Ohms, there were two visible peaks on either side of the fundamentals. But, better to have them go through a digital intermediate than not to have them at all. Frequency, 5 Volts and 20 Volts output, is shown below, at 8 Ohms load. That was back in 2015. When Parasound released their JC 1 monoblock power amplifier in 2002, the A/V world was very impressed. If you have relatively inexpensive mass-market receiver and speakers, then such cables would not be appropriate. The rear panel has myriad selections, inputs, and outputs. It … The overall construction is atypical and extremely expensive to do. A bias level selector switch enables cooler operation, with virtually no … The other end was connected to the Parasound JC 1+ power amplifier. Distortion plus noise was still quite low. I believe the primary purpose for developing and marketing an amplifier is to honor its customers in every respect the money will follow. It clips (1%) at 450 Watts RMS. Parasound did a thorough job in writing the manual for the A21+. Julio has been around a long time, and I think he will be with us for a long time in the future too. Distortion plus noise was 0.0066%. That’s their business model. PS Audio Stellar M1200 monoblock power amplifier, Classé Delta Mono monoblock power amplifier, Pass Laboratories Aleph 0 monoblock power amplifier, Parasound Halo JC 1+ monoblock power amplifier, darTZeel NHB-468 monoblock power amplifier, Accustic Arts Audio Mono II monoblock power amplifier, Dynaco Stereo 120 transistor power amplifier, Revinylization #13: Tone Poet, Analogue Productions, ERC reissues, Analog Corner #290: The Haniwa LP Playback System, Gramophone Dreams #44: Audio-Technica, Goldring, LP Gear phono cartridges, Cambridge Audio CXA81 integrated amplifier, Analog Corner # 305: Degritter record cleaner & Aidas Gala Gold LE cartridge, Acoustic Geometry Room treatments (before & after), My current and likely the last home audio setup, Fascinating wiev by Verity Audio Sarastro, Recommended Components: Fall 2020 Edition. That, I think, is because analog tape often had a bass bump between 50 Hz and 100 Hz. Out of all the components, it is very unlikely that anyone would ever need to replace them with another model or brand. At 4 Ohms. Parasound has long been admired for their preamplifiers and power amplifiers. Fortunately, the power amp had a protection circuit. Music – Tidal – Julio Iglesias – Mexico – Released 5/8/2020. Here is a photo of the inside of the chassis: Look how big the heat sinks are. It takes the … It’s not ours. The Parasound JC 1+ amplifiers did very well with this. If you want something that is ready to go (for mass market receivers), and not generic, then consider something like these (https://www.audioadvisor.com/prodinfo.asp?number=AQT8NF&opt=1176|1189|1196|1201), or these (https://www.audioadvisor.com/prodinfo.asp?number=KK4TC&opt=6440|392|398|404) for the front left and right channels. It is because there are many notes that are being played at the same time, perhaps 10 because there are 10 fingers on two hands. The Parasound Halo JC 1+ power amplifier, in black or silver finish, will be available from authorized Parasound … Note that such cables are for high-end products (amplifiers and speakers). This part of my job brings me enormous pleasure and satisfaction. Toward the end of this review, I received the new Parasound Halo P6 preamp that will solve this woe. Thirty years ago, the upstart audio company NAD revolutionized the manufacturing of consumer-electronics components by "internationalizing" the process. Then, all the conductors are run individually through an extrusion line to add the PE insulation that covers every conductor. According to a blurb by John Curl that accompanies the amp, the design is "based on a complementary differential J-FET input stage followed by two stages of selected push-pull MOSFETs ultimately driving nine pairs of the most powerful complementary bipolar power transistors that are available today.". The power supply transformer is now 2.1 kVA (2,100 watts), which is important when you consider that, at 2 Ohms, the JC 1+ can deliver 1,200 watts (if you have them both plugged into the same 20 ampere 120 V AC circuit, it may trigger the circuit breaker – now that’s my kind of power). I didn’t want to have the left channel the same length (20 feet) which would have necessitated coiling it up behind the speaker. Rear-panel fittings include balanced and single-ended inputs, two sets of five-way binding-post outputs, a ground "lift" switch for when there are hum problems, and a bias-level switch allowing for reduced bias current, and thus cooler operation if needed. 4,5, and 8 – James Ehnes, James Armstrong – Onyx – Released 4/24/2020. I decided that I would never use such cable again. It does show that if you listen to music pretty loud with a 4 Ohm speaker, the power limit from the amplifier will decrease as the amplifier heats up. These amps are magnificent performers in nearly every regard," raves Greg Weaver in his review for Positive Feedbackonline magazine. And despite what the purists say, on occasion, for example when playing a poorly engineered recording, they can be useful. My answers are below, in red. It clips (1%) at 450 Watts RMS. The front panel design not only matches the updated Halo family appearance, but also complements the inner beauty of the JC1+. After soliciting some advice here and considering various brands and models, I decided on the Parasound … ... is to review … You can choose RCA or XLR inputs, pass-through an input to a second amplifier such as a subwoofer, time the power-on (Turn On Options) so that not all the amplifiers are turned on at exactly the same time (to keep from blowing a fuse in your circuit breaker), select lower gain to reduce noise, select lower Class A bias for more power, and activate the auto-on trigger which powers on the amplifier when it receives a preamplifier signal. The cost of Clarus cables also should be considered relative to other cables. It has enough power (450 watts RMS into 8 Ohms) to drive any speaker, and the parts quality is a statement on its own. Music – Tidal – Chopin Impromptus and Scherzos – Mao Fujita – Piano – Naxos – Released 10/16/2019. We had some lively discussions within Parasound about this topic in the early stage of the JC 1+ development. Increasing the output to 20 Volts produced seven peaks on either side, at 8 Ohms. All of these musicians were stars in their own right. Consider Parasound's Halo JC 1 monoblock power amplifier, designed by legendary engineer John Curl and originally reviewed by Michael Fremer in February 2003. Toshiba JFETs for the input stage, Sanken bipolar transistors for the output stage, Nichicon Gold Tune power supply capacitors totaling 198,000 µF, a 30 pound 2,100 watt power supply transformer, a special circuit board substrate that delivers better propagation of high frequencies compared to Delrin, etc. So I asked John Curl and he called the brilliant microwave engineer in Silicon Valley with whom he co-invented Bybee Music Rails. Parasound calls the Halo Integrated a … According to Parasound… In their eyes, that’s just a bad and rushed design. The new Parasound … But, the Parasound JC 1+ power amplifiers did their thing without audible distortion. Now that 8K flat panel TVs are here, will they be a passing fad or will they become the norm, which includes significant content? The Parasound Halo JC 1 Monoblock Amplifiers Review By Wayne Donnelly, Superior Audio Magazine is the leading authority in high-end audiophile music and audio equipment reviews. According to Crump, the JC 1 grew out of a CTC-modified Parasound HCA-3500 called the CTC BBQ, which was demoed at the 2001 Consumer Electronics Show. I imagine there are new capacitors that sound as good, but I don’t blame Parasound with sticking to what works for them. "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. RS: I can’t imagine it breaking out of its present niche. 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