Meixing MingDa Valve Amplifier – Check The Experiences..

Jungson’s JA-88D seems like an electric power amplifier but it’s not. It seems that Jungson Audio was caught out by a high consumer interest in integrated amplifiers at a time when it was primarily producing separate pre and power amplifiers. The company judged the fastest way of getting an item to advertise in order to satisfy demand would be to build preamp circuitry into certainly one of its existing power amplifier chassis.

Thank you 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 of the the Jungson JA 88D Integrated Amplifier written by Peter Nicholson, as well as a complete test report, including frequency response graphs conducted by Newport Test Labs, along with an exhaustive analysis of the test results written by Steve Holding.

This equipment review is currently available only being a low-resolution pdf version in the original magazine pages. Yes, it seems a lot like an electrical amplifier, but it’s not. It’s an incorporated amplifi r. You’d be forgiven for your mistake, however, because it seems that Jungson was caught out with 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 method of getting an item to advertise in order to satisfy this demand was to incorporate the circuitry from a single of their preamplifiers into one of its existing power amplifier chassis.

It chose a roomy chassis it was using for the JA-99C power amplifier and modifi ed its circuit, and that from the existing JA-1 preamplifier, to create this integrated amplifier, the JA-88D. The Gear Self-evidently, the front side panel from the JA-88D is covered with the two huge, power meters which are not just ‘oceanblue’ (to quote the purple prose from the brochure!) when the amplifier is off, but a beautiful iridescent shimmering blue when the amplifier is powered up-a blue so blue it offers a nearly ultraviolet quality. They search so excellent that certain is inclined to overlook this fact that power meters don’t actually tell you exactly how much ‘power’ an amplifier is producing in any way, but alternatively give a rather a rough and prepared indication of the overall voltage at the amplifier’s output terminals at any moment.

Not that Mingda Single-ended Tube Amp is making any pretense that you’ll use the meters to gauge power output, since there are no wattage or voltage markings on the meter faces whatsoever! I guess that if I were a designer at Jungson, I’d look east across the wide blue ocean for the large power amplifiers made in the US, and say something like ‘if American companies such as McIntosh still include power output meters, so should we.’ In fact, Jungson would additionally be addressing consumer demand, even though they didn’t know it, because little by little, businesses that previously eliminated power meters off their front panels are slowly reincorporating them within their designs, driven only by requests using their dealer networks and customers. I can’t say I’d blame them.

I don’t find meters useful or practical, but if I received the option of a JA-88D (or other amplifier its physical size) using a plain metal front panel or with a pair of great-looking meters, I’d go for the version with the meters each and every time. Jungson continues to be very clever with the design of the JA-88. Instead of fit a pair of ugly handles for the front panel, it offers designed the front side panel as two very different parts, with one panel in front of the other. The foremost of these two panels features a large rectangular cutout inside it, through which you may see the two power meters, which are fitted to the hindmost fascia plate. The secret here is that you can use the cutout being a handle! Examine the top panel closely and you’ll observe that the ability on/off, Volume up/down and source switching buttons are fitted to some scalloped semi-circular depression on the foremost panel. Between the two meters is really a sloping rectangular section that is a mirror when ‘off’ and an LED read-out when it’s on (about which more later). Overall, you will see that between the two, both meters, the mirror between them, the buttons and also the semi-circular scallop form a kind of rudimentary ‘smiley face’-giving a whole new meaning towards the wqilvi of anthropomorphism in highend audio.

In reality, as the Xiangsheng Pre-Amplifier is made in China, it could 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 in the gong’ which alludes to a 4,000 year old copper gong which is famous throughout China. Chinese people believe the sound out of this particular gong is different because it’s beneath the control over 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 made by RCA connectors. The fourth input is balanced, utilizing 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 actually a standard fused (10-amp) IEC power socket. All the connectors are of excellent quality, but they’re not ‘audiophile grade.’ It seems the negative terminal will not be referenced to ground, which means you should connect the Jungson’s speaker outputs only to ordinary passive loudspeakers. You’ll need a fair little bit of room and 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 on a solid surface, with several centimetres of clear space all around, because to get a solid-state amplifier it runs hot-sizzling hot indeed.

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