All tubes are tested before they leave the premises, however, I cannot test all parameters, so I encourage buyers to perform their own tests, if possible.

Nobody can positively forecast the sound of a tube in a piece of gear. I know I can’t. So I give buyers the opportunity to try them out, knowing they can just return them if they are not what they’re looking for. The final test will be with your gear and your ears.

Because of the large number of tubes and varieties I have, I do not price many of them until a specific request is made, unless they have an advertised price in the Asylum Trader.

My pace is slower than years ago when I sold tubes on the Asylum. Your patience is appreciated. We're not in a rush.

I’ve assembled some Excel spreadsheets for specific tube types. They are partially populated. Most types have other tubes to add. Some types will not be entered on spreadsheets due to the large number I have, or low (if any) demand. Not gonna do it.

Tubes recently inventoried:

(38) General Electric 6SL7GT NOS/NIB

(9) Sylvania JAN-CHS 6SN7WGT

(2) Sylvania JAN-CHS 6SN7GT NOS/NIB

(14) Amperex 12AX7 and 12AX7A

Spreadsheets recently assembled/updated: 6GW8 ECL86 / 6U8 6U8A / 12SN7 / 7N7

Spreadsheets currently available (partial lists of inventory):

12SN7GT / 12SL7GT / 6SN7GT GTA GTB / 6SN7 VT-231 / 6SL7GT / 6DJ8 / 5963 / 5751 / 5687 / 12AX7 / 12AU7 / 12AT7 / 12BH7A / 5814A / 6189 / 6201 / 6BQ5 / 12AY7 - 6072 / 6L6GC / 5881 / 6FQ7-6CG7 / 6679 / 7247

A sample of other types available:

/ 12BY7 / 6080 / 6EU7 / 7025 / 5U4G / 5U4GB / 5V4 / 5Y3GT / 6AK5 / 6L6G GA / 5842 / 12AZ7

.....and too many others.

Feel free to contact me with any questions or requests.

I have many many types that have not been mentioned above, or will be advertised for sale.