Low Noise Differential Preamp - KO4BB
Noise problems in electret mic preamp | Forum for Electronics
Another Phono Amp for MM-cartridges
MC Phono Preamp
RJM Audio - Op amp Passive Phono Preamplifier
HiFi audio amplifier using Burr-Brown op amp | Savel brain dump in English!
Condenser microphone pre-amp with bootstrapped op amp
DIY HiFi Preamplifier
A Pocket Headphone Amplifier. – HeadWize Memorial
Mic Preamp Kit - Electronics DIY Projects PCB
DIY HiFi Preamplifier Build
Op-amp Phono Pre-amp
MMCF10 HIFI LP phonographen MM verstärker RIAA Phono vorverstärker PCB/DIY Kit/Fertige board
Amazon.com: MMCF10 Feedback Attenuating Phono Amplifier (MM Phono Preamp) HiFi LP Phonograph MM Amplifier- Finished Board (MMCF10 PCB) : Electronics
Pre-amp to connect microphone to speakers
The Audio Preamplifier
Another Phono Amp for MM-cartridges
OPA134 based guitar preamp with tone control - FINAL - CircuitLab
Guitar Preamp
Guitar Pre-amp Mk3
Phono Pre-amp Circuit
F.S: MM Phono Preamplifier modules (4 X OPA134) | diyAudio
LME49710 vs OPA134 for a unit gain buffer | diyAudio
Yes – opamps swapping may make a measurable difference in a preamp | Audio Science Review (ASR) Forum
OsPre - Open Source Preamp
Condenser microphone pre-amp with bootstrapped op amp
Replacement for old Intech or Fairchild op-amp.
OPAMP's
Condenser microphone pre-amp with bootstrapped op amp
