Spicy Boost

Mostard is built around the idea that boosting a guitar signal should not simply make everything louder. Instead, it focuses on lifting the parts of the spectrum that give the instrument clarity, presence, and articulation while leaving behind the frequencies that tend to create mud, boxiness, or congestion in an amplifier. The result is a clean boost that behaves less like a volume control and more like a tool for revealing the natural character already present in the guitar and amp.

At its core, the circuit provides a high-headroom gain stage capable of delivering substantial clean amplification without collapsing into distortion. Rather than placing the gain control entirely within the feedback structure, Mostard separates the core voicing from the final output stage. This allows the signal to remain balanced and controlled while the output level is increased, avoiding the low-end buildup that often occurs in conventional boost designs.

Following the gain stage, a carefully voiced three-band EQ shapes the signal in ways that serve real guitar rigs rather than abstract frequency curves. The low control tightens the bottom end without adding boom, the mid control smooths out boxiness or adds presence, and the high control introduces sparkle or softens harshness depending on the needs of the setup. Together these controls allow the pedal to adapt to different pickups, amplifiers, and pedal chains without masking the identity of the instrument.

Because of this architecture, Mostard can function in several roles within a signal chain. It can act as an always-on enhancer that brings focus and life to a clean sound, as a precision boost that pushes an amplifier toward natural breakup, or as a shaping stage that refines the response of other drive pedals placed before or after it. In every case, the goal remains the same: clarity, definition, and dynamic response without unwanted coloration.

Designed and manufactured in Switzerland by RhPf Electronics, Mostard is an original clean boost created for players who want their core tone to feel brighter, tighter, and more alive without sacrificing the natural voice of their instrument.

https://rhpfelectronics.com/product/mostard-clean-dynamic-boost/