The Classic Leslie Speaker, made to Don Leslie’s “Original Recipe”, same as it has been since 1941. This two-speed speaker uses a traditional tube amplifier with a heavy duty driver in the horn and special design 15” woofer for the bass rotor. Connections are made via the 11-pin plug found on all modern Hammonds, and certain clones. For older Hammond models, adapter kits are available. A few concessions to modern times have been added, such as a ¼” “guitar cord” input, and a jack for a footswitch; thus eliminating the need for a bulky cable and “preamp box”.