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F6 mounted on a 5U Deluxe Chassis heatsink (chassis sold separately)


Part of the F6 project
Choose ConfigurationCurrently Selected: Circuit Boards
Circuit Boards
$ 25.00 USD
Please note: the numbers on the MOSFETs are ID numbers only, and are not related to their measurements nor their matching
Transistor Kit
$ 24.00 USD
$ 25.00

A pair of F6 circuit boards.

Dimensions 250mm x 50mm
Mounting holes UMS Heatsink Compatible
Number of boards included 2
Layers 2
Board Revision 2.0


F6 Project

  • Power Amplifier
  • Designed by Nelson Pass
  • Intermediate Difficulty
  • Basic Build Guide
  • Only Essentials Kit Available

Visit the F6 project page for more information about this project.

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$ 25.00 USD

Note - Photos include parts available at the time of publishing. Individual components are subject to change based on availability.

Customer Reviews

Based on 24 reviews
Mark P.

Looks and sounds incredible. The kit is no longer available, so I had to source the parts from several different suppliers. I highly recommend this amplifier. Thanks Nelson and DIY Audio.

Radoslav P.
First Watt F6

The sound is great.Easy to build. Super !!!! Thanks Nelson.

F6 built like a tank Photos

Part two

Roger S.
F6 vs F5

I decided to build the F6 after doing and listening to the F5 for a few months. Although the F5 is a fantastic sounding amp I somehow found it a tick too bright and flashy...
Now the F6 seems to be a completely different beast (in a positive way) as it sounds darker and rounder.
Only a few hours of listening but I guess I'll stick to this one ;-)
Absolutely fantastic service from DIY as always.

F6 built like a tank

This is my first custom built amplifier but with a difference:
I've used high end parts replacing the kit from Audio-Note Caps and TAKMAN resistors carbon film.
Also Overkill PSU cap 33000uF * 8 and soft-start & speaker modules.
Awaiting to have time hear it to the fullest.

Sheldon S.
F-6 is astonishing

Finished my F-6 a few weeks ago. Truly amazing amp and not that challenging for a semi-beginner. Plenty of things I had to decipher but helps me learn. Nothing blew up and still no smoke or electrical fires after several weeks, probably a good sign. Fantastic level of detail with my Klipsch Fortes and more than enough power. Trying it now with totally rebuilt DQ-10's--much harder speaker to drive but sounds luscious and sensual in a way that the Fortes can't quite do. Gets loud enough for me with the DQ-10 but if I keep these speakers I'll probably tackle the F5T at some point. Now just waiting on my nutube kit we'll see what that does.
What a fantastic hobby this is but potentially highly addictive. Be warned.