| Electronics > Projects, Designs, and Technical Stuff |
| how much gain do I need for a guitar preamp to drive a line input? |
| (1/4) > >> |
| ELS122:
basically I have a transistor output stage that I can easily drive from my phone, how many gain stages I need and how much gain to drive it from a guitar? I'm also looking for a LOT of gain. |
| Prehistoricman:
Okay, Moregain Freeman. Did you answer your own question? :D |
| gbaddeley:
A guitar pickup might output 100mv or less, depending on load impedance and how hard you play. A hot pickup could output over 1v if the strings are hit hard. |
| TheUnnamedNewbie:
I believe in the case of guitars, the problem is not the level but the impedance. You might need a high impedance unity-gain buffer (current gain) more than any actual voltage gain. |
| Circlotron:
High impedance, yes. I read that too low an impedance will dampen the strings. May only by a negligible amount though. |
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