I'm selling a Hagerman Clarinet kit/2. This is his 12AU7 tube linestage kit. Would sound GREAT with some RCA Clear tops! :p
More info here:
Hagerman Technology LLC: Clarinet Vacuum Tube Linestage DIY Kit
The kit/2 is basically a circuit board, build manual and chassis drill guide. Sells new for $129 ... will ship to US 48 for $80, inquire for international shipping rates.