Hi Phatt, if I hitt hard the strings I have a little saturation, is due to the 20 db gain or is a 2n5457 biasing problem? I put a 50k trimmer instead of the 15k drain resistor to obtain 4.5v
The VR2 is a gain control?

So, I use a modified tillman preamp to obtain quite the same level. The sounds both really good, the èickup is a Benedetto, so a low output p.u. The mixing of two p.u. is not so udible, you ear it only with both vol opened. Maybe I can post a sample and schematic

paolo

When I go into the input with the mag it souns good but the piezo disappears. Could work use a simple tillman preamp to gain the mag signal and go straight to the output together?

paolo

Thanks a lot Phatt, in the meantime I've tryed the Phabb fet boost, very nice, warm and big headroom
could be used together with a magnetic p.u. like the lrbaggs? Maybe can I use the same buffer like in lrbaggs schematics?

Thx again

Paolo

I tried to build a stripboard version but it seems that does not work , very very low signal . I used BC177 and 2N5457. Here is the stripboard version.  Can someone help me?
I've tried a lot of other preamp but no way to have a good bass frequency response like Element LRBAGGS or NaturalI Fishman

thanks a lot phatt, i'll try with some 5457

paolo

Does anyone knows what kind of fet to use? J201, 2N5457, MPF102 and what for the PNP
Thans

Paosal