Lumpy's Tone Shop
The '73 Drive is a unique take on the classic "Marshall In A Box" stye stompbox. Using elements of a late 60's Marshall the '73 Drive will get you that classic Plexi crunch and then some.
Instead of a typical single tone control the '73 Drive uses a three position rotary switch that varies a filter nextwork in the preamp of a 60's Marshall.
In the '67 setting the tone is full, thick and fat, it's reminiscent of a JTM45. It's great for fattening up a Strat or Tele.
The '69 setting is more akin to a late 60's Super Lead. It's tighter and more mid focused that the '67 setting. 70's rock tones are no problem.
The ZoSo setting is geared toward Page's 1973 or "TSRTS" tone. It's the brightest of all 3 settings with a hit of midrange quack.