The Fulltone Full-Drive 1 (FD1) packs the celebrated Full-Drive sound into a compact, pedalboard-friendly enclosure with top-mounted jacks. A 3-way clipping switch gives you instant access to Fulltone's most requested voices: Comp-Cut for an open, amp-like feel, Vintage for classic midrange cut and sustain, and Flat-Mids for a more neutral response that plays nicely with a wide range of amps and pickups. Under the hood, the FD1 uses the JRC4558 op-amp, a favorite for smooth, musical overdrive textures. True-bypass switching keeps your signal pristine, while 9–18V DC operation lets you choose more sag at 9V or extra headroom and punch at higher voltage. Despite its small footprint (4.8" × 2.9" × 2.35"), the FD1 offers straightforward controls for Volume, Tone, and Overdrive, making it fast to dial in and easy to integrate into any board. Whether you're chasing a touch-sensitive edge-of-breakup or a focused lead voice that stands out in the mix, Full-Drive 1 delivers proven tones with modern practicality.