Complex Design, Simple Use
At its core, the Twin Peaks Eiger-Mönch features a carefully engineered delay circuit. While it offers plenty of sonic depth, its interface remains intuitive and rewarding. We didn’t want to create a pedal with extreme, gimmicky settings that sound great once and then collect dust. Instead, we built something that works across the board, inspiring at every setting.
The Twin Peaks Eiger-Mönch Topology

Your signal first passes through an input gain stage. This section gives your tone a warm push and plenty of headroom. From there, the signal splits into three paths:
- The dry signal, kept fully intact
- A warm signal, which goes into the first delay line
- A bright signal, which travels into the second delay line

Each delay path has its own distinct voice:
- The warm line reduces high-end content slightly, rounding out the repeats with a soft, analog-like character. It brings body and warmth, pairing beautifully with dynamic playing.
- The bright line enhances upper mids and highs, giving your repeats more bite and clarity. It cuts through, even in dense arrangements.
Used together, these lines create a wide, dimensional sound that feels alive. When dialed subtly, the effect approaches the sound of a spring reverb with slightly looser tension—soft, reflective, and full of movement. This makes the pedal excellent for always-on use, adding space and texture without washing out your dry tone.
Parallel and Cascade Feedback Modes
At the heart of the topology is a feedback switch that lets you choose between two different routing behaviors.
- In Parallel Mode, the warm and bright delays operate independently. Each feeds back into itself, while their outputs are blended with the dry signal. This setup provides rhythmic clarity and stereo-like width, letting each path maintain its own character.
- In Cascade Mode, the lines feed into one another. The warm line flows into the bright, which flows back into the warm, and the cycle repeats. This interaction creates an evolving delay pattern where each repeat shifts tone and rhythm. As the lines chase each other, the echo accelerates slightly, and the tonal color shifts naturally with every pass. The result is fluid and cinematic.
Maximum Headroom, No Oscillation Madness
We tuned the internal delay lines to reach the edge of self-oscillation without crossing it. You get long, full-bodied feedback that builds and breathes, but never loses musicality. Even at extreme settings, the pedal remains stable and expressive.
All paths – dry, warm, and bright – are blended together in a high-headroom mixer, then passed through a transparent output buffer. This final stage ensures that your tone remains articulate, regardless of how far you push the effect.
Ultimately, the Twin Peaks Eiger-Mönch is a complex instrument designed for intuitive use. Every control responds musically. Every mode has a distinct purpose. And every setting invites you to explore something new.
Unique and Original
At RhPf Electronics, we don’t do clones, variants, rehashes, or improved copies. We only build pedals when we feel we have something new to say—something that doesn’t already exist. With the Twin Peaks Eiger-Mönch, we pushed ourselves to create a delay circuit that’s truly original. It’s not just about features—it’s about sound, feel, and depth. A pedal that brings something fresh to your board, without gimmicks and without compromise.
Stay tuned for more RhPf Electronics Behind the Scenes!
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