Audio Research Reference 75
Audio Research Reference 75. Tube power amplifier.
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Description
With an aesthetic that reminiscent of the great classics of Audio Research, the new amplifier created by the firm founded by the legendary William Z. Johnson incorporates two analog meters on its front panel that indicate both the power output and the polarization of each valve. power. The output power is 75 watts continuous per channel from a fully balanced push-pull circuit (identical to the Reference 150) with a single pair of paired KT120 power valves per channel, while the input section Uses JFET transistors with continuous coupling with a single 6H60 valve in the section of attack ("driver"). With regard to the power supply, a design of great robustness is used almost identical to the one of the model REF110.
Technical characteristics
- Circuit topology completely based on vacuum valves.
- Output stage based on the combination of the classic "ultralineal" mode and Audio Research's exclusive "cathode partial coupling" topology.
- Output power of 2x75 W continuous per channel.
- Frequency response of 0,7-75,000 Hz (cut-off points at -3 dB).
- Balanced analog outputs.
- "Slew rate" of 10 V / us and rise time of 4 ms.
- Noise level less than -112 dB.
- Dimensions: 483x222x495 mm (W x H x D).
- Weight: 21.3 kg.