21:55

Dynamic Microphone Preamplifier Part #1

16:33

Build and Review: DIY Dual Mic Preamp (ESP P-66)

15:40

Heathkit DX-60: Part #1

14:54

OPA Based Alice Microphones: Cardioid and Figure 8

21:34

The Class A amplifier - build and test (2/2)

13:11

Getting Started With OpAmps \ Dynamic Microphone Amplifier

25:51

CB Mic wiring for UK FM radios

15:13

Another Pre-Amp board using the NE5532. Any Good?