Infinity F.E.T. Preamplifier specifications

This preamplifier was built around the middle / end of the 70s to the beginning of the 80s. It is the only preamplifier that Infinity has ever built. Of this preliminary stage, only 200 pieces were built! The F.E.T. Preamp was not produced for the European market and therefore it should not be available in Europe, especially since this device was also built exclusively for 117 V / AC (not switchable to other values). But exceptions also confirm the rule here, because 1 copy then exists in Europe after all.

The F.E.T. Preamp is a preamp suitable for the Swamp power amplifier. The F.E.T. Preamp was built around the same time and in the same design as the Swamp. These two devices have complemented each other.

Tech nical data:

Information comes from www.infinity-classics.de and the release of the data is approved.

Frequency range: Line 20Hz - 100kHz +/- 1dB and 1Hz - 230KHz -3 dB, Phono 3Hz - 50kHz -3 dB (MC)
Intermodulation distortions at 2V Output voltage: Phono MM 0.05 %, Phono MC 0.07 %, Line 0.05 %
Harmonic distortions at 2 V Output voltage: Phono MM 0.05 %, Phono MC 0.07 %, Line 0.05 %
Signal-to-noise ratio: Phono MM -82 dB, Phono MC -70 dB, Line -90 dB
Input impedance: Phono MM 47 kOhm , Line 50 kOhm
Power consumption: 30 watts
Weight: 11.8kg
Dimensions WxHxD: 469x114x381 mm