- Altec 1588B High-Gain Mod
- Cathedral Pipes “Dale” M7 capsule
- D-U87 Vintage Microphone PCB Set
- Eli-Audio AMEK/TAC Scorpion Diff.004
- GLS Audio ES-58 Mod
- Golden Age Pre73 Preamp Mods
- Mic & Mod Apex 460 Upgrade Kit
- Michael Joly Dual Ribbon Mod
- Michael Joly Engineering ES-58 Mic Mod
- Microphone Parts Apex 460 “Fox” Mod Kit
- Microphone Parts MXL 990 / MCA SP-1 Mod Kits
- Mojotone Discrete Hi-Voltage Series Effects Loop
- Oktava MK-012 Mod
- Oktava MK-219/319 Mod
- Open Plan Recording C12 / 251 Clone Mods
- Peter Purpose’s Alesis 3630 Mod
- Shure M67 Mixer Mods
- Shure SM81 Mods
- TSKGuy U67/U87 capsules
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