The Selmer T&B sounds plausible to me. I saw Free live several times - and about four times after ARN was released. Koss never got that tone from either his Marshalls or his HiWatts.
Strange thing though - to me at least - that's not the real Koss's tone. That's to be found in the tone of the chord work in Be My Friend, the solos in The Hunter and Mr Big, the intro chords of Fire & Water, Ride on Pony, and most of all in the driving boogie shuffle of The Highway Song. He nailed those live every time.
Shivers up my ****ing spine just thinking of it
Anyone know what was used in the solo to wishing well? Sounds kinx of talk boxy but I don't know if they were out back then