http://www.aztechmusic.com how to repair guitar amps, synths and other music gear. Tips and tricks on how to keep your gear out of the shop. How to use a multimeter. Thu, 05 Aug 2010 18:07:09 +0000 en hourly 1 http://wordpress.org/?v=3.0 http://www.aztechmusic.com/4/groove-tubes-mod-sockets-928-pr-substi-tube/ http://www.aztechmusic.com/4/groove-tubes-mod-sockets-928-pr-substi-tube/#comments Sun, 06 Jan 2008 22:38:21 +0000 Gary http://aztechmusic.com/?p=4 http://www.aztechmusic.com/4/groove-tubes-mod-sockets-928-pr-substi-tube/feed/ 0