qersty wrote:what kinda fuzz is the supa fuzz? Looks kinda tonebenderish from the layout. am i correct?
The Marshall Supa Fuzz is more or less the same as the Tone Bender MKII, built by both Sola Sound (from 1966-1968ish) as well as by Marshall (from 1968ish-early 1970s). Earlier examples of the Supa are
exactly the same as the Sola Sound Tone Bender MKII, as they were built by the same people at the same factory - the builders for Sola Sound stuffed identical circuitboards into different enclosures, printed with the names of the various brands under which Sola Sound's fuzz at the time would be sold. Any unusual features that sometimes crop up in 1966-68 Sola Sound-built Marshall Supa Fuzzes (such as 100 ohm limiting resistors or Impex transistors) are not to be seen as unique 'Supa Fuzz' features - they are simply details of how Sola Sound's MKII fuzz circuit evolved over the course of two or so years. The different brands that Sola Sound provided pedals for included Marshall ("Supa Fuzz"), Rotosound ("Fuzz Box"), as well as of course Sola Sound & Vox ("Tone Bender Professional MKII"). Once Sola Sound moved onto the Tone Bender MKIII, around 1968, Marshall picked up production of the Supa Fuzz themselves, and these later Supas built by Marshall look somewhat different, but
are still based off the Tone Bender MKII circuit.
Tl;dr - from 1966-1968, the Marshall Supa Fuzz was an OEM version of the Tone Bender MKII, and after 1968, Marshall produced their own version of the pedal themselves (which was still based on the MKII circuit).
Some of the very earliest Sola Sound-built versions of the Supa Fuzz contain a totally different fuzz circuit, which is based off the Tone Bender 'MKI', instead of the Professional MKII, and so we refer to those as the 'Supa MKI'. It's still a three-transistor fuzz, but the Tone Bender 'MKI' and Supa 'MKI' circuits are based off the Maestro FZ-1, whereas the Professional MKII is more or less like a Fuzz Face-type circuit with an extra gain stage in front. It's murky stuff, but I hope that this clears up some confusion (without opening up too much more!)