Mostard

The Mostard is a high-headroom MOSFET clean boost delivering up to +30dB of ultra-clean gain with a naturally bright voice. Its main gain is set inside the feedback loop, tuned for clarity and headroom.

Four controls provide precise tone shaping: Gain adds brilliance, punch, and crisp attack, naturally leaning bright and more treble-forward at higher settings. Low shapes the bottom end, Mid smooths boxiness or adds clarity and bite, and High adds sparkle or tames the top end. The EQ adjusts key frequencies rather than functioning as a traditional bass-mid-treble stack.

Designed to enhance your core sound whether left on permanently or engaged for standout moments. Original circuit handmade in Basel, Switzerland.