As in title.
Explanation: I'm looking for as-simple-as-possible DC-coupled jfet differential input stage idea that would work well with guitar pickups, connected in floating configuration. (sort-of making an "active pickup" from a vintage one)
Apart from the textbook 5(4)-resistor/2-fet circuit, does somebody know of some tricks employed by likes of Duncan, EMG, MEC ... in their "active pickup preamps", which are usually said to be "discrete floating differential". Meaning 2fets differential ampli imho, for a build the 2N3819 would be fine I guess.
Of course I'd prefer a "served" professional circuit that would work with dead batteries , but in reality, any insight would be ***fine***. Especially what do those builders do differently versus the textbook circuits ...
Or a schemo ***if exists***!
Explanation: I'm looking for as-simple-as-possible DC-coupled jfet differential input stage idea that would work well with guitar pickups, connected in floating configuration. (sort-of making an "active pickup" from a vintage one)
Apart from the textbook 5(4)-resistor/2-fet circuit, does somebody know of some tricks employed by likes of Duncan, EMG, MEC ... in their "active pickup preamps", which are usually said to be "discrete floating differential". Meaning 2fets differential ampli imho, for a build the 2N3819 would be fine I guess.
Of course I'd prefer a "served" professional circuit that would work with dead batteries , but in reality, any insight would be ***fine***. Especially what do those builders do differently versus the textbook circuits ...
Or a schemo ***if exists***!