Jungson’s JA-88D looks like an electric power amplifier but it’s not. It seems that JungSon Tube CD Player Impression II was caught out by a high consumer interest in integrated amplifiers at a time in the event it was primarily producing separate pre and power amplifiers. The company judged that the fastest method of getting a product or service to advertise to fulfill demand was to build preamp circuitry into certainly one of its existing power amplifier chassis.
Thanks for searching out Australian HI-FI Magazine’s equipment review and laboratory test in the Jungson JA88D Integrated Amplifier originally published in Australian Hi-Fi Magazine, September/October 2006 (Volume 37 Number 5). This equipment review includes a full subjective evaluation in the the Jungson JA 88D Integrated Amplifier authored 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 is currently available only being a low-resolution pdf version of the original magazine pages. Yes, it looks a lot like an electric power amplifier, but it’s not. It’s an incorporated amplifi r. You’d be forgiven for that mistake, however, because it appears that Jungson was caught out by a high consumer interest in integrated amplifiers at the same time when it was primarily producing separate pre and power amplifiers. Jungson’s engineers judged the fastest way to get an item to advertise in order to satisfy this demand ended up being to incorporate the circuitry in one of its preamplifiers into one of its existing power amplifier chassis.
It selected a roomy chassis it absolutely was using for its JA-99C power amplifier and modifi ed its circuit, and this of the existing JA-1 preamplifier, to come up with this integrated amplifier, the JA-88D. The Gear Self-evidently, the front side panel in the JA-88D is covered with the two huge, power meters which are not only ‘oceanblue’ (to quote the purple prose in the brochure!) if the amplifier is off, but a beautiful iridescent shimmering blue if the amplifier is powered up-a blue so blue it offers an almost ultraviolet quality. They search so good that certain is tempted to overlook this that power meters don’t actually tell you just how much ‘power’ an amplifier is producing whatsoever, but instead give a rather a rough and prepared indication of the overall voltage at the amplifier’s output terminals at any moment.
Not that Mingda Tube Amplifier is making any pretense that you’ll use the meters to gauge power output, because there are no wattage or voltage markings on the meter faces whatsoever! I suppose that when I were a designer at Jungson, I’d look east across the wide blue ocean for the large power amplifiers made in the united states, and say something along the lines of ‘if American companies including McIntosh still include power output meters, so should we.’ In fact, Jungson would even be addressing consumer demand, even though they didn’t realise it, because slowly and gradually, companies that previously eliminated power meters off their front panels are slowly reincorporating them to their designs, driven only by requests off their dealer networks and customers. I can’t say I’d blame them.
I don’t find meters useful or practical, but if I were given the choice of a JA-88D (or any other amplifier its physical size) having a plain metal front panel or with a pair of great-looking meters, I’d choose the version using the meters each and every time. Jungson continues to be very clever with the appearance of the JA-88. As opposed to fit a couple of ugly handles to the front panel, it has designed the front side panel as two totally different parts, with one panel while watching other. The foremost of these two panels has a large rectangular cutout within it, through which you may begin to see the two power meters, that are fitted to the hindmost fascia plate. The secret here is that you could utilize the cutout 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 your scalloped semi-circular depression on the foremost panel. Involving the two meters is actually a sloping rectangular section that is a mirror when ‘off’ as well as an LED read-out when it’s on (about which more later). Overall, you can see that between the two, the 2 meters, the mirror between the two, the buttons and also the semi-circular scallop form a kind of rudimentary ‘smiley face’-giving a new meaning to the wqilvi of anthropomorphism in highend audio.
In fact, as the Xiangsheng 728A Preamp is created in China, it might perfectly be deliberate, since anthropomorphism (the action of attributing human forms or qualities to things that are not human) holds much significance in Chinese culture. The name Jungson means, literally ‘The spirit of 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 charge of a musical god. On the rear panel there are two 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. Your fourth input is balanced, employing a female, lockable XLR terminal which uses Pin 1 for ground, Pin 2 for ( ) and Pin 3 for (-).
Within the centre of the panel is a standard fused (10-amp) IEC power socket. All the connectors are of great quality, but they’re not ‘audiophile grade.’ It appears to be the negative terminal is not referenced to ground, so that you should connect the Jungson’s speaker outputs just to ordinary passive loudspeakers. You’ll require a fair bit of room along with a sturdy rack to allow for the Jungson JA-88D. Its dimensions are 470 × 430 × 190 (WDH) and weighs 29.6kg. I would recommend placing it over a solid surface, with several centimetres of clear space all-around, because for any solid-state amplifier it runs hot-very hot indeed.