ALLNIC AUDIO T-2000, Руководство пользователя

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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-2000 30th Anniversary uses only two stages
of driving circuit to a40dB of voltage gain, instead of three or four stages as one finds in many
conventional integrated amplifiers. This results in less coloration and more speed in signal/sound
reproduction. In the T-2000 30th Anniversary , we employ the D3a tube in triode mode as the second
stage driver tube, with a load of about 9K ohms, and using 12mA of current. The listener can easily hear
and even "feel" the differences between this design and other, more conventional, ones. Please
imagine, as you listen to the T-2000 30th Anniversary , its sound compared to the sound of an integrated
amplifier with conventional 12AU7 or 12BH7's used as drivers, with a load of about 47K ohm, and using
2 to 3mA of current.
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“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 which 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.
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Large Nickel/FeSi Core Output Transformers. As with our other models, Allnic uses very 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.
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"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.
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Analog 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 and to respond immediately to any
variation in bias by use of the bias control knob for the relevant tube. The meters offer a simple,
unambiguous indication of each tube's status compared to conventional LED bias monitors.
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"On-the-Fly" Triode/Pentode Switching. Switching between triode and pentode operation can be done
"on-the-fly" at any time while the amplifier is in use.
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Beautiful 10KHz square wave response. See Figures 1-3.