Hi all.
I need a follower for my bass guitar (with passive pickups) that won't load down the input tube (CCS loaded 7b4) of my amp when I turn down the volume pots on the bass.
Should I go with jfet or mosfet?
PS I need extreme fidelity and neutral tone (the bass amp is all custom, with DHT finals)
I need a follower for my bass guitar (with passive pickups) that won't load down the input tube (CCS loaded 7b4) of my amp when I turn down the volume pots on the bass.
Should I go with jfet or mosfet?
PS I need extreme fidelity and neutral tone (the bass amp is all custom, with DHT finals)
Can you kindly point me in the right direction (to find a genuine part)I suggest a follower with 2SK241 MOSFET. Gate is protected inside the device, designed for low noise FM front end and 17mS of transconductance, this gives low voltage loss as follower.
PS I need extreme fidelity and neutral tone (the bass amp is all custom, with DHT finals)
For fidelity and neutral tone and likely battery life
= opamp
Or just pretty standard low noise BC556
Or for low noise jfet, pretty normal source follower with
LSK489
Or common go too Mosfet be
2N7000
Last edited:
@WhiteDragon also took an important point: Current consuption. A single MOSFET or JFET needs 10 to 20mA to reach those mutual conductance. If you want to maintain FET category (Personally I love them toguether with tubes and strongly dislike BJT's), you can try one or more of the low voltage low current drain opamps. I may cite as example TS271 series from STM but there are several of them. If you have experience in SMD, you can go also for smaller micropower opamps. Search with Google or ChatGPT for a list of the thousands available from many manufacturers.
- Home
- Amplifiers
- Solid State
- MosFET or JFET for source follower