Groove Tubes Model 5SM Multipattern Large Plate Condenser Mic (Low Use Time)

NEW GROOVE TUBES PSM1 POWER SUPPLY FOR TUBE MIC GT66/67

Alesis/GrooveTubes AM62 Multi-pattern Tube Microphone

Groove Tube GT55 Studio FET Condenser Microphone

Advanced U87AI condenser microphone, professional recording studio/singing mic

Groove Tubes MD1A Tube Condenser Microphone GT Model 1A Mic

SUPER RARE GROOVE TUBES C3 OMNI CAPSULE FOR GT30/40 AND ALESIS AM30/40

Neumann U87Ai P48 Studio Mic Microphone w/Box Shockmount