The MXR Script Phase 90 Phaser (CSP101SL) is a classic and highly regarded phaser pedal. It's known for its warm, swooshing sound, which is iconic in guitar effects. The "Script" version refers to the design of the original Phase 90 pedal from the 1970s, which had a script logo and a more subtle, smoother phasing effect compared to later models.

The key feature of the CSP101SL is its simplicity—it has just one knob for controlling the rate (speed) of the phase effect. This makes it super easy to dial in, whether you're looking for a slow, swirly phase or a faster, more intense sound. Many guitarists love its rich, vintage sound, and it’s been used by legends like Eddie Van Halen for its distinctive tone.

If you're into that old-school vibe with a touch of modern reliability, the CSP101SL could be a great addition to your setup. Are you thinking about adding one to your pedalboard?