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The overall design of the T A – HV (= High Voltage) series dictates that all the amplifier stages run at much higher operating voltages than usual; in the pre-amplifier this is 80 Volts, in the output stage 360 Volts. This means that – in a similar manner to valve-based amplifiers – the actual modulation of all stages is very small. Only a very small section (less than 20%) of the performance curve of the amplifier transistors is exploited, virtually eliminating the curved – i.e. non-linear – part of that curve. Further measures are also employed with the aim of linearising the voltage amplifier stages, such as cross-coupled differential amplifier cascodes and improved “Hawksford” cascodes with double J-FET control transistor. The result of the high operating voltages is extremely broad dynamic range combined with excellent linearity. We have developed this unique technology for use in all the machines in the series, since it provides enormous improvements in sound quality which naturally benefit the output stages of source devices such as the MP 3000 HV multi-source player as well as pre-amplifiers and power amplifiers.
PA3000 HV Integrated Amplifier
Power output: 300Wpc into 8 ohms
Inputs: 4 XLR, 2 RCA, H-Link (HV data bus), LAN (system control), trigger input
Outputs: 2 pairs speaker binding posts, XLR balanced line-level, RCA line-level, 3/8" headphone jack
Input impedance: 20k ohms single-ended, 5k ohms balanced
THD: .001% (pre-amp stage), .03% (power amp stage)
Frequency response: .5Hz–450kHz (pre-amp stage), .5-150kHz (power amp stage)
Dimensions: 18" x 6.7" x 18"
Weight: 84 lbs.
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