Amplification and Volt-metering

[c0re_dump]

I have finished constructing a balanced microphone preamplifier. The circuit that I used is here: http://sound.westhost.com/project66.htm. The only changes I made were in the choice of transistors (ZTX214 and ZTX300) and the use of switched resistors for setting the gain instead of a potentiometer. When it's set for full gain, it's a little noisy

Comments

[loopback0]

Expanded scale voltmeter? Cant you just take the glass off, photocopy up the scale, and glue a big whisker to the pointer?

:)