First Watt F8 - audioG Magazine

First Watt F8 First Watt, April 8, 2020

Originally created almost 6 years ago, the F8 is a stereo two-stage single-ended Class A amplifier using the NOS Toshiba 2SJ74 P channel Jfets and SemiSouth R100 SiC power Jfets for signal gain, plus IRFP240 Mosfet mu-follower current sources, for a total of three devices per channel.

It is similar to the J2 amplifier, but has only one front end transistor instead of six, operated as a current feedback amplifier (CFA) as opposed to the J2’s voltage feedback (VFA) differential input. This front end is more consistent with the single-ended approach to amplifier design and yields a purer second harmonic character, less distortion with lower negative feedback, greater bandwidth and higher damping factor.

Press Release Documents

Website Address

https://www.firstwatt.com/

More Press Releases

June 3, 2025

Marten Design

Coltrane Supreme Extreme: engineering without limits

We’ve always believed that real progress in audio comes from removing the usual limits — and trusting our instincts. When our design team has the freedom to explore bold ideas, innovation follows. With Leif Olofsson leading the way, we pursued that philosophy without compromise.

May 9, 2024

Nordost

Introducing Leif 3 Cables

Nordost’s Leif Series has been the benchmark in entry-level audio cables since its introduction to the hifi industry over three decades ago. The longevity of this influential line is due both to Nordost’s comprehensive approach to cable construction, as well as our ability to improve upon celebrated products as technology develops, while remaining true to a core design philosophy.