F5 vs F6
The F6's damping factor is 16 against the F5's 60 and its input impedance 100000Ω against 100Ω. Both share power @ 8ω (25W) and thd (1.000%).
AI-generated product photo — not official manufacturer imagery.
AmplifiersPower AmplifiersDiscontinued
Estimated price (community-sourced)
$4,000
Around — community and catalog average, updates slowly
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
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 25W @ 8Ω
- Damping Factor
- 60
- Input Impedance
- 100Ω
Analog Output
Analog signal output specifications
- THD
- 1.000%
Key Specifications
Power: 25W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions