21 DIY Kit Sources for Pro Audio, Synth Modules & Instruments — Pro Audio Files
Lindell Audio 77X–500 - Stereo Bus Compressor
FiveFish Audio - DIY Mic Preamp Kits, 500 Series Kits, VPR Certified | Audio, Mic, Series
5 DIY audio kits to improve your recording - Threecircles Recording Studio
Tegeler Audio Vocal Leveler 500 Series Opto Compressor - Vintage King
DIYRE Colour
OLA5 Opto Compressor – DIY Recording Equipment
Loaded 500 series lunchbox with DIY preamp and compressor | Reverb
Kits
Serpent Audio | High Quality Audio Compressors
Sound Skulptor: CP4500 Stereo Bus compressor for the '500' Lunchbox - Kit, Effects, CP4500
Loaded 500 series lunchbox with DIY preamp and compressor | Reverb
Sound Skulptor: CP4500 Stereo Bus compressor for the '500' Lunchbox - Kit, Effects, CP4500
f76 - DIY 500 series Urei 1176 inspired compressor | Recorder music, Compressor, Fast and slow
Serpent Audio | High Quality Audio Compressors
Racking 500 Series/Lunchbox Preamps, Equalizers, Compressor Modules: How to Instructions. – FiveFish Audio Blog
the DON classics
FiveFish Audio - DIY Mic Preamp Kits, 500 Series Kits, VPR Certified
Buyer's Guide: 500 Series - Best 500 Series Preamps - 500 Series Modules - Vintage King Blog - Vintage King
Promotion
DIY Essentials: The Best DIY Audio Kits for Every Level — SonicScoop
TC-500 // Versatile Tracking Compressor for 500 Series. | GroupDIY Audio Forum
JLM Audio Shop
500-series compatible JLM Opto-Compressor (pics) | GroupDIY Audio Forum
