The SPAX7 is the top of the line, hand-selected tube that Mesa-Boogie offers. It is recommended for critical gain stages where only the quietest tube will do.

When Mesa-Boogie is testing their tubes they ocassionally run across a tube that exceptionally quiet and more than average gain. These they set aside and label SPAX7. (Special AX7)

This is the ultamate preamp tube to use in all critical gain stage positions - The absolute best of the best!

Price is for a Single Tube

List - $26.00