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F5

Name: First Watt F5
Brand: First Watt

First Watt

F Series Series

AmplifiersPower AmplifiersDiscontinued

Estimated price (community-sourced)

$4,000

About the F5

The F5 is a 25 Wpc stereo Class A push-pull power amplifier from First Watt, designed by Nelson Pass around a simple two-stage complementary JFET/MOSFET topology. It offers 25 watts per channel into 8 ohms at 1% THD, with a high input impedance of 100 kΩ, gain of 15.3 dB, and damping factor around 40-60, and is noted for its very low noise (~60 µV), wide bandwidth (DC to over 500 kHz), and ability to drive low-impedance loads while maintaining low distortion at typical listening levels.

Specifications

Key Specifications

Power: 25W

Full structured specifications are available to members.

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