- APP Studio Ing. MA1 500-series Preamp Kit
- APP1040 Mic Preamp
- Eisen Audio DIY500 Preamp
- ESP Project 122 Preamp
- ESP Project 66 Mic Preamp
- FETboy Mic Preamp
- Hairball Audio Lola DIY Mic Preamp
- Hamptone HJFA Amplifier
- Hamptone HJFP1 DIY Preamp
- Hamptone HJFP2 FET Preamp
- IJ Research Albatross Preamp
- Jensen Twin Servo 990 Mic Preamp
- JLM Audio BA500 Mic Preamp
- JLM Baby Animal Preamp
- JLM Mono Portable Mic Preamp
- Mnats 1108 Preamp
- Seventh Circle Audio J99 Preamp
- Total Audio Control MICPRE ONE Preamp
- Troodent Trident A Range Mic Preamp
- [silent:arts] K13117 class A preamp
- [silent:arts] OV560 Preamp
- [silent:arts] PMV70X
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