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STA-522
is a highest quality Supermalloy transformer that has 22 steps in secondary
winding to function as stepped attenuator with very high inductance (in
excess of 450 Henry or equivalent to 50Kohm) with very low loss winding
technique (called Nano winding technology). The primary coils are made
such that it can be connected to generate +0dB or +6dB which acts like
a step up transformer in a system where load input sensitivity is low.
The
benefit of replacing plastic type volume control to stepped attenuator
is obviously the accuracy of tracking and the quality of selector switch
plus low noise resistors can reduce the signal loss to some degrees. However
the regular stepped attenuator featuring resistor type fails to offer
better impedance matching over plastic volume control. That's why at high
attenuation level (low signal out, low listening level) the bandwidth
of such volume control is very poor and the bandwidth is not constant
over any switch position.
This
area is totally solved by using transformer with multi tap secondary to
perform attenuation. Transformer offers much lower signal loss and much
lower output impedance (10 times lower than regular stepped attenuator)
thus it will process very wide frequency response at any attenuation setting.
Listener will hear this evidence at first time when compare our Supermalloy
Transformer Attenuator to any other types, guaranteed.
Not
only our Supermalloy Transformer Attenuator can be used in replacement
of any existing volume control device in pre-amp or integrated amp, but
it can also be great used as stand alone Passive Pre-amplifier. Since
it has very low output impedance, it can drive long cable better than
regular Passive Pre-amplifier; moreover, its ability to make +6dB signal
makes it very versatile in environment where source level is low or load
input sensitivity is low.
Although
several manufacturers are now introducing transformer volume control but
non match the accuracy of winding, number of attenuations, highest inductance
with lowest insertion loss of our SILK STA-522. We build this transformer
to under 0.5% precision with highest quality parts and craftsmanship available
anywhere. The best thing is that everyone can afford it. At $360USD/pair
it is the best value and performance. Guaranteed!
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