Jungson’s JA-88D seems like a power amplifier but it’s not. It seems that Jungson JA-88D was caught out by a high consumer demand for integrated amplifiers at a time in the event it was primarily producing separate pre and power amplifiers. The company judged that the fastest way to get a product to promote in order to satisfy demand was to build preamp circuitry into among its existing power amplifier chassis.
Thank you for searching out Australian HI-FI Magazine’s equipment review and laboratory test from the Jungson JA88D Integrated Amplifier originally published in Australian Hi-Fi Magazine, September/October 2006 (Volume 37 Number 5). This equipment review consists of a full subjective evaluation in the the Jungson JA 88D Integrated Amplifier published by Peter Nicholson, plus a complete test report, including frequency response graphs conducted by Newport Test Labs, with an exhaustive analysis of the test results published by Steve Holding.
This equipment review happens to be available only being a low-resolution pdf version from the original magazine pages. Yes, it seems similar to an electric power amplifier, but it’s not. It’s a built-in amplifi r. You’d be forgiven for that mistake, however, because it seems that Jungson was caught out by way of a high consumer demand for integrated amplifiers at a time if it was primarily producing separate pre and power amplifiers. Jungson’s engineers judged that the fastest way of getting a product or service to market to satisfy this demand ended up being to incorporate the circuitry from a single of their preamplifiers into certainly one of its existing power amplifier chassis.
It chose a roomy chassis it absolutely was using for its JA-99C power amplifier and modifi ed its circuit, and that from the existing JA-1 preamplifier, to come up with this integrated amplifier, the JA-88D. The Machine Self-evidently, the top panel of the JA-88D is dominated by those two huge, power meters which are not just ‘oceanblue’ (to quote the purple prose in the brochure!) if the amplifier is off, but an attractive iridescent shimmering blue when the amplifier is powered up-a blue so blue it offers a virtually ultraviolet quality. They look so excellent that one is lured to overlook this fact that power meters don’t actually inform you exactly how much ‘power’ an amplifier is producing at all, but instead give a rather a rough and ready indication from the overall voltage at the amplifier’s output terminals at any time.
Not too Mingda Tube Amplifier is making any pretense that you’ll try to use the meters to gauge power output, because there are no wattage or voltage markings on the meter faces whatsoever! I guess that in case I were a designer at Jungson, I’d look east throughout the wide blue ocean towards the large power amplifiers made in the US, and say something along the lines of ‘if American companies like McIntosh still include power output meters, so should we.’ In fact, Jungson would additionally be answering consumer demand, even when they didn’t realize it, because bit by bit, businesses that previously eliminated power meters off their front panels are slowly reincorporating them to their designs, driven only by requests from their dealer networks and customers. I can’t say I’d blame them.
I don’t find meters useful or practical, however, if I received the option of a JA-88D (or other amplifier its physical size) using a plain metal front panel or with a set of great-looking meters, I’d choose the version with all the meters each and every time. Jungson has become very clever with the appearance of the JA-88. Instead of fit a pair of ugly handles to the front panel, it offers designed the top panel as two very different parts, with one panel in front of the other. The foremost of the two panels includes a large rectangular cutout within it, through which you can view the two power meters, which can be fitted to the hindmost fascia plate. The trick here is that you could use the cutout as being a handle! Examine the front side panel closely and you’ll notice that the ability on/off, Volume up/down and source switching buttons are fitted to a scalloped semi-circular depression on the foremost panel. Between the two meters is a sloping rectangular section which is a mirror when ‘off’ plus an LED read-out when it’s on (about which more later). Overall, you will see that between them, the 2 meters, the mirror between the two, the buttons and the semi-circular scallop form a sort of rudimentary ‘smiley face’-giving a new meaning towards the wqilvi of anthropomorphism in highend audio.
Actually, since the Xiangsheng DA-05B DAC is made in China, it could perfectly be deliberate, since anthropomorphism (the act of attributing human forms or qualities to things which are not human) holds much significance in Chinese culture. The particular name Jungson means, literally ‘The spirit from the gong’ which alludes to some 4,000 year-old copper gong that is certainly famous throughout China. Chinese people believe the sound from this particular gong is exclusive because it’s underneath the control over a musical god. On the rear panel there are 2 pairs of gold-plated speaker terminals per channel and four line level inputs. Three of the inputs are unbalanced, connection being created by RCA connectors. The 4th input is balanced, using a female, lockable XLR terminal which uses Pin 1 for ground, Pin 2 for ( ) and Pin 3 for (-).
In the centre in the panel is actually a standard fused (10-amp) IEC power socket. Each of the connectors are of excellent quality, but they’re not ‘audiophile grade.’ It appears the negative terminal is not really referenced to ground, so you should connect the Jungson’s speaker outputs just to ordinary passive loudspeakers. You’ll require a fair little bit of room as well as a sturdy rack to support the Jungson JA-88D. It measures 470 × 430 × 190 (WDH) and weighs 29.6kg. I might recommend placing it on a solid surface, with several centimetres of clear space throughout, because for any solid-state amplifier it runs hot-sizzling hot indeed.