I'm selling a 42-year-old Roland AP-II for $300 cash. Built by Roland in 1975 before they changed their brand name to BOSS. It is in immaculate condition and is still considered one of the best sounding phasers ever made. This vintage phaser has controls for Rate and Resonance to manipulate both the amount of phase and the shape of the sine wave, yielding a huge array of smooth Leslie-inspired tones. Everything from a slight, slow-rolling phase to an intense, spacey tonal manipulation comes out of this versatile unit. There is also an internal pot to adjust the overall strength of the effect.