Pass Labs

F7

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.

Features

• Class A Operation: The F7 is designed to operate in Class A, known for its purity and minimal distortion. 
• Output Power: Delivers 20 watts per channel into 8 ohms and 30 watts per channel into 4 ohms. 
• Frequency Response: Wide bandwidth, with -3dB at 100kHz.
• Topology: Uses a two-stage push-pull JFET/MOSFET design. 
• Feedback: A combination of low negative voltage and positive current feedback for improved control over reactive speaker loads. 
• Input Impedance: 10k ohms. 
• Gain: 14dB. 
• Damping Factor: Greater than 100. 
• Simplified Circuit: Fewer parts than previous First Watt amplifiers. 
• Sound Characteristics: Known for its textural sweetness, warm tonality, and high-resolution sound. 
• Dimensions and Weight: Approximately 17" x 5.5" x 15" and 26 lbs. 
• Price: $3000. 

Specifications