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F5 parts Kit

F5 parts Kit

  • 6900


This kit contains everything you need to populate the F5 V3 PCBs, other than the JFETs for Q1 and Q2. See the F5 PCB page for more information and review the F5v3 Build Guide.

Good for 2 channels.

Q1 and Q2 can be purchased from us as LINEAR SYSTEMS MATCHED LSJ74/LSK170 JFET PAIRS (GRADE B).


Part Value Qty. In this kit? Notes
R1 4.75k 2 Yes
47.5k 2 Yes
R3, R4 10R 4 Yes
R5, 6, 21, 22 2.21k 8 Yes A few extra 2.21K resistors are included for the R5 R6 positions in case extra series resistance in needed to get the bias up to proper levels. Most builders will not need them, but they are nice to have on hand.
R7, R8 .47R 3W 4 Yes
R9, 10, 11,12 100R 3W 8 Yes
R13, 14, 17, 18 100R 8 Yes
R15, R16 1k 4 Yes
R19, R20 10k 4 Yes
P1, P2 5k 4 Yes
P3 200R 2 Yes
TH1, TH2 4.7k 4 Yes
Q1 2SK170 2 No Source Q1 and Q2 Separately as 2 matched NP pairs*
Q2 2SJ74 2 No Source Q1 and Q2 Separately as 2 matched NP pairs*
Q3 IRFP9240 2 Yes
Q4 IRFP240 2 Yes
Q5 ZTX550 2 Yes
Q6 ZTX450 2 Yes

Customer Reviews

Based on 3 reviews
F5 pcb and kit

Great boards. one thing that would help would be a v3 build guide. Its a little confusing that the boards are v3 and the guide is based on v2. It would be easy to start stuffing before realizing the part designation is different between the 2 versions.
Overall quality is excellent though.

Reliable and trustworthy

Piece of mind - high quality, easy to buy, trusted.

Fantastic audio store

So glad they have a F 5 kit now. Great service and great products. I built the amp camp amp before doing the F5. The ACA sounds great, best amp I've ever owned. I have owned alot of amps tube and transistor and this is my favorite. I run 88 db speakers and I have plenty of power with only 6 watts class A. good stuff

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