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Please read about SAFETY before you attempt to use the A-2000 25

ANNIVERSARY - we care about our customers and the equipment, and we

want you to enjoy this product for a long time!

INTRODUCING THE A-2000 25

STEREO POWER AMPLIFIER

The A-2000 25

anniversary stereo power amplifier

is Allnic Audio's only KT150 stereo power amplifier

model. Like all Allnic Audio products, the A-2000

anniversary 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 2000 25

anniversary has the following

features:

•

100 watts of high power output. The A-2000

anniversary is a push-pull, triode/pentode

switchable power amplifier.

Driving Circuitry. Allnic believes in the

importance of using high-quality, low noise

and powerful driving circuitry in all its

amplifying devices. Therefore, in the A-2000

anniversary, we employ the E282F tube in

triode mode as the second stage driver tube,

with a load of about 5K ohms, and using 20mA

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 A-2000 25

anniversary, its sound compared to the sound

of an amplifier with conventional 12AU7 or

12BH7's used as drivers, with a load of about

47K ohm, and using 2 to 3mA of current.

•

ANNIVERSARY

Powerful

•

"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.

Large Nickel/FeSi Core Output Transformers.

As with our other models, Allnic uses very

large output transformers (96 mm) with nickel,