About the 9303
The Hafler 9303 is a solid-state stereo power amplifier designed for professional and high-fidelity audio applications. It provides 150 watts per channel into 8 ohms in stereo operation and 450 watts into 8 ohms when bridged mono. The amplifier features a frequency response of 20Hz to 20kHz, total harmonic distortion of 0.07%, and a damping factor of 80. It has a gain of 29 dB, input sensitivity of 1.22V, and a signal-to-noise ratio of 100 dB. The 9303 uses true differential input amplifiers with J-FET input stages and MOSFET output stages, ensuring balanced input and high performance. It is rack-mountable, weighs 36 lbs, and measures 19" x 12.5" x 3.5". The amplifier is THX certified and was manufactured in the USA. It is known for its fast slew rate of 150 V/µs and a wide full power bandwidth from 0.15Hz to 300kHz. The 9303 is regarded as a reliable, hard-hitting amplifier suitable for home stereo setups and professional use, offering smooth sound with plenty of bass impact. It was originally
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