## Juma's Popular Design [Preamp ideas for F5 \| Page 3 \| diyAudio](https://www.diyaudio.com/community/threads/preamp-ideas-for-f5.125893/post-1690625) Integrated Amp (part of F5M Chassis) ``` After few months of experimenting here is the circuit that sounds best to me - it's the same topology as the first one in this thread but with BJTs in output and higher Id through JFETs (6ma). It takes the +/- 24V from F5 (they are both in the same case - F5 as integrated amp) and preamp's OUT is connected directly to F5's input. I used the PCB from the post #3 of this thread but with some diferent components and values." ``` ``` I used pcb layout from post #3 of this thread, just changed component values according to schematic in post #53 and output pair is BJT, not JFET (S=E, G=B, D=C) ``` ![[Pasted image 20260131140027.png]] ![[Pasted image 20260131140058.png]] ![[Pasted image 20260131140125.png]]