High Peaks wrote:I think he was using a wah with the tone knob rolled back.
Agreed on that.
High Peaks wrote:He was using the power amp of the fender then to, so he might have had some natural tube overdrive to
Circa 1969 is when Ron Wickersham stated that they began to preamp-tap the Twins and send them to a number of McIntosh MC275 tube power amps (not sure if these were used in stereo with each 75w ch driving one 12" or bridged or what)... the MC275's can be seen in the 8/27/72 footage. However by New Year's of that same year, JG was using MC3500 power amps (as seen on Dozin's site). These are mono 350w tube amps. Then by early 1973 (2/9/73 being a good guess) the whole band was using the new MC2300 2x300w stereo solidstate
amps (except for the vocals highs which were still MC3500).
I believe he turned his Twins volume up somewhat higher during the 70's, so you are getting a degree of preamp tube overdrive...