ALLNIC AUDIO T-1800 MK2 Manuale d'uso - Pagina 4

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INTRODUCING THE T-1800 MK2 EL34 STEREO INTEGRATED AMPLIFIER

The T-1800 MK2 stereo integrated amplifier is Allnic Audio's EL34 stereo integrated amplifier model. Like all

Allnic Audio products, the T-1800 MK2 has Permalloy (iron and nickel alloy) for its transformer cores. Allnic is

grateful to Mr. G.W. Elmen of Western Electric for inventing Permalloy for transformer core use, and in so

doing, providing an enormous service to recorded music listeners everywhere.

The T-1800 MK2 has the following features:

• 40 watts of high-power output. The T-1800 MK2 is a push-pull, EL34 power tube based stereo integrated

amplifier.

• Remote controlled 41 step silver contact attenuator. The T-1800 MK2 employs this house made quality

attenuator instead of standard, outsourced carbon film potentiometers. The Allnic attenuator provides complete

channel balance and less distortion.

• Powerful Driving Circuitry. Allnic believes in the importance of using high-quality, low noise and powerful driving

circuitry in all its amplifying devices. The T-1800 MK2 uses only two stages of driving circuit.

• "Full Engagement" Output Transformers. Conventional output transformers use pre-set secondary windings to

accommodate 4, 8, and 16 ohm loudspeaker loads. However, these conventional transformers utilize only one

secondary winding at a time, while the other secondary windings remain "idle". This approach has two adverse

effects. First, the output transformers are not working at their maximum efficiency, reducing their output relative

to their potential. Second, the "idle" windings are not actually "idle"; they are subject to parasitic oscillations,

producing their own "signal". This undesirable electrical information is additive to the transformer's output,

distorting the amplified signal going to the loudspeaker. Allnic's "Full Engagement" transformers address these

issues by having 4 independent, secondary windings that are always fully connected, never "idled". This means

that all secondary windings are always connected to your loudspeakers, regardless of which output switch

position you use (4 ohms or 8 ohms or 8 ohms or 16 ohms, depending on the factory configuration you have

selected). The result is that there is neither a loss of transformer output efficiency, nor the introduction into the

output signal of distortion from parasitic oscillations of the secondary windings.

• Large Nickel/FeSi Core Output Transformers. As with our other models, the T-1800 MK2 uses the latest, very

large Allnic large output transformers (96 mm) with nickel, mixed with FeSi, cores. This provides for higher

inductance with fewer windings than other designs can provide and results in the great benefit of an extremely

wide range of output frequencies.

• "Soft-start" Circuitry. Allnic uses soft start circuitry that, after sufficient warm-up only, provides the high voltage

supply to the plate of each tube. This protective design results in prolonged tube life and fewer and less

frequent issues with tube performance.

• Analogue Power Tube Current Monitors. In order to provide constant current (bias) monitoring for the power

tubes, Allnic uses a separate analogue current meter for each tube. The meters make it exceptionally easy to

see the status of each tube at any time. The meters offer a simple, unambiguous indication of each tube's

status compared to conventional LED bias monitors.

• As are all Allnic Audio products, the T-1800 MK2 is fully RoHS (EU Reduction of Hazardous Substances

regulation) compliant in construction and materials.