Pass Labs First Watt FW F7
$4,000.00
The F7 is a very unique power amplifier, a two-stage push-pull JFET/MOSFET topology with fewer parts than any First Watt amplifier to date and incorporating a very interesting balance of very low negative voltage feedback and a little bit of positive current feedback to give an astonishing measure of control over reactive loudspeaker loads.
Description
The F7 is a very unique power amplifier, a two-stage push-pull JFET/MOSFET topology with fewer parts than any First Watt amplifier to date and incorporating a very interesting balance of very low negative voltage feedback and a little bit of positive current feedback to give an astonishing measure of control over reactive loudspeaker loads.” And from the First Watt F7 manual: “Modest amounts of negative feedback are balanced in counterpoint to small amount of positive current feedback, creating an equilibrium where the output impedance approaches zero, improving transient and frequency response.
- Measured at 120 V AC and an 8 ohm load:
- Distortion @ 1 watt 0.05%
- Input Impedance 10 Kohm
- Gain 14.5 dB
- Input Sensitivity (1 watt) 0.53 V
- Input Sensitivity (max output) 2.7 V
- Damping Factor >100
- Output power 8 ohms 20 watts @ 2% THD, 1KHz
- Output power 4 ohms 30 watts @ 3% THD, 1KHz
- Class A envelope 40 watts peak @ 4 ohms
- Frequency response DC to -3 dB @ 100 KHz
- Noise 100 uV unweighted, 20-20 KHz
- Power consumption 170 watts
- Fuse 3AG slow blow type – 2.5 Amp for 120VAC , 1.25 Amp for 240 VAC
- Warranty: Parts and labor for 3 years, not covering shipping costs or consequential damages.
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