Supro Royale 212 | 50 Watt 2x12 Phaser the SPEED control to set

the SPEED control to set the sweep rate

In other words

FROM SMOOTH AND SUBTLE TO TURBULENT AND INTENSE

we know some players have some special devices like extra fussy vintage fuzz pedals and the like

Supro Royale 212 | 50 Watt 2x12 Phaser the SPEED control to setFrom the manufacturer: The Royale was designed to deliver loud and vivid clean tone with a remarkably responsive, tactile low end. A high headroom, 50W tube amplifier with a powerful EQ, footswitchable boost, tube buffered effects loop and glorious tube driven spring reverb, the Royale captures all of the nuances in your playing, both on stage and in studio. The 5881 loaded power amp in the Royale offers a choice of Class A (35W) or Class AB (50W)