Introduction
The NuPrime STA-9, a 2 X 120W Class A+D stereo amp, bridgeable into a 290W mono amp, is designed with
enhanced even-order harmonic circuitry that mimics the most attractive features of tubed-amp sound
without incurring tubes’ drawbacks and limitations. The STA-9's spacious, transparent, dynamic and
luxuriously textured soundstage has to be heard to believe.
The STA-9 amplifier is derived from the ULCAM (Ultra Linear Class A Module)+Class D design first introduced
in the IDA-8. By joining a powerful high impedance singled ended amplifier circuit in the preamp stage with
a well integrated Class-D power stage, the STA-9 a rich tube-like sound with the remarkable speed and
clarity of NuPrime Class-D design. Audio enthusiasts are bound to be impressed.
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