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Looking for a very quick and high power transistor able to precisely amplify main audio signal and its harmonics ( frequency range of, say, 10 Hz to 300 kHz ), rise time of less than 90 nS ( or nearest feasible ) , rail voltage 230 V DC

ZFili.2
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input voltage 2.0 up to 2.5 volts, power rating at least 600 watts at 8 ohms. Input impedance ideally 30kOhm. Load impedance 2 Ohm minimum, normally between 4.0 and 8.0 Ohms. Ideally, transistor could accept rectified grid voltage in Europe ( 230 volts, 50 Hz ) or be fed by an over-sized UPS. Aim is to avoid using multiple and unmatched transistors in an output stage of audio amplifier. One discontinued such model was made by APT, type 20M19JVR ( mosfet , 200 V, 112 A , 0.019 Ohm , rise time 40 nS ), so we are looking for a contemporary similar or better model.

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