I have a Jan-Ray for those cranked Fender Blackface amp-in-a-box tones, a Shin’s Dumbloid for Dumble & a Les Lius for Tweed. Marshall was missing, hence the purchase. It’s a great pedal for that compressed MIAB flavour. My amps: Suhr Hombre & Marshall ST20 JTM Studio in stereo. IMO, The .45 Caliber excels with a Jazzmaster and (in my experience) also when stacked with either a Les Lius, Vemuram Shanks ii Fuzz, or a Tube Screamer (all placed before the J Rockett). I personally enjoy the gold finish, small-ish footprint and top-mounted jacks. It feels high quality.