Try Andy at Vintage Tube Services. Not cheap, but the tubes I bought from him were exceptional (Telefunken 12AU7).
http://vintagetubeservices.com/page18a.html
http://vintagetubeservices.com/page18a.html
Suggestions for 12AU7 & 12AT7 Tubes - VTL 2.5
My McIntosh C500 preamp has matched quad of Black Sable - Mullard ECC83/12AX7. Check out Tube Depot Preamp Tubes |
Bssk you may find that these tube vendors may not have all the tubes you want. Good you have options. Kevin is great resource as well as Andy. Also try Doug's Tubes Doug knows his tubes. |