Currently available from Bass Emporium:
Groove Tubes 12AX7C Preamp Tube (Chinese)
Groove Tubes 12AX7M Preamp Tube
Groove Tubes 12AX7R Preamp Tube (Russian)
Groove Tubes 5AR4 Rectifier Tube
Groove Tubes 5U4 Rectifier Tube
Groove Tubes GT12AT7 Preamp Tube
Groove Tubes GT7025 Preamp Tube
Groove Tubes GTECC83 Preamp Tube
Mesa Boogie 12AX7 Premium Grade Vacuum Tube
