F-4 Circuit Boards
- Description
- Project Info
- Links
This pair of F-4 Clone Boards use the same circuit as the Nelson Pass / Firstwatt F-4 model.
| Dimensions | 250mm x 50mm |
|---|---|
| Mounting holes | UMS Heatsink Compatible |
| Number of boards included | 2 |
| Layers | 2 |
| Board Revision | 2.0 |
F4 Project
- Power Amplifier
- Designed by Nelson Pass
- Intermediate Difficulty
- Basic Build Guide
- Only Essentials Kit Available
Contributors
Visit the F4 project page for more information about this project.
Note - Photos include parts available at the time of publishing. Individual components are subject to change based on availability.
Customer Reviews
Well, you'd be surprised how much you might do with this no gain amplifier. You should read up on it and if it seems you'd like to give it a try you will be rewarded with a new and lovely perspective.
It will show you what you need to know about your preamp. It will show you how a speaker can be really controlled. I use mine to drive a pair of high efficiency sub woofers because of the control afforded. It is a great tool in making music and taking a full assessment of where your stereo is at. I have built the F4, F5t, F6 and the Aleph J, all very good experiences and all still in service but the one that taught me the most about stereos is the F4.
All of the kits here are a great bargain and very well made. The gift from Nelson Pass and his supporters is not to be passed up. Build this amp! You'll be educated and it'll be fun!
Excellent quality boards. Fast delivery
While repairing a channel in the F4 I had to unsolder and solder several parts repeatedly.
The board survived a hot iron. I've seen other boards come part after a single unsoldering of a part.
Excellent boards. Installed all components, biased up and working 100% and dead quiet
As always, a great product from the Store.
The amp itself is brilliant design!
PCBs are of excellent quality and very easy to work with.
Though a couple of improvements can be made: bigger diameter of resistor leg holes allow to install high quality resistors like 0.5W Shinkoh or Takman. Also it's better to bypass electrolytic caps with film and mica caps, so place for one (or better - two) bypass caps for each electrolytic should be great addition.