The Aspen One combines the Case Study Aspen overdrive and a transparent MOSFET boost in a single true bypass enclosure, with relay switching throughout and an all-analog signal path. It's the most complete drive pedal we've ever built. The Aspen Drive The Aspen reimagines a classic expandora-style circuit with dramatically improved post-drive volume and a bass knob for dialing in the low end. From edge-of-breakup to face-melting fuzz, it covers more ground than any single drive on your board. The Boost A transparent MOSFET boost. Clean most of the way, starts to clip when cranked. The circuit we used in The Boost Side, now living exactly where it belongs. Order Switching A toggle switch flips the signal chain order. Boost into drive or drive into boost. These are two fundamentally different sounds, and you can switch between them instantly. TRS Remote Control Equipped with a TRS jack for remote control via a TRS-capable relay pedalboard switcher (like the Mastermind PBC/6X's FS control), you can remotely engage SW1 on the Aspen side to increase its gain or activate the boost directly from a preset. If you don't have a switcher, a simple remote switch works too. Improved Fuzz Stability The fuzz mode in the original Aspen was loud and wild, but enough of you told us it was a little too wild for practical use. We spent a lot of time with it and found the sweet spot. Silicon or Germanium The Aspen One is available in two versions. The Silicon version has the same clipping character as the original Aspen. The Germanium version uses vintage hand-sourced vintage germanium diodes; the same ones that made the original Germanium Aspen so hard to put down. Softer clipping, smoothed highs, and something that's genuinely hard to describe until you hear it. We could only build the Germanium Aspen in tiny batches because of how labor-intensive it was, but the Aspen One changes that. The board is SMD, but we hand-solder the diodes in. Same sound, finally available at scale. We do have a finite supply of vintage germanium diodes, so the Germanium edition will sell until they're gone. Specifications True bypass, relay switching All-analog signal path TRS remote control jack Order toggle switch (boost → drive / drive → boost) Silicon ($249) or Germanium ($279) clipping options Controls: Gain, Tone, Bass, Volume, Boost Power: 9VDC only, 150mA
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