logologologologosecondary logosecondary logosecondary logosecondary logo

Mosphoros

Mosphoros
OVERDRIVE
Description
Mosphoros is RhPf Electronics’ wide-range overdrive built around one idea: making gain feel like motion rather than a switch between clean and dirty. It can sit in a rig as a high-headroom lift that keeps transients intact, then stretch into a harmonically layered drive that stays smooth even when pushed hard. The feel is the headline here. Notes swell, compress, and bloom while staying responsive to pick attack, with a long sweep from clarity to saturated weight instead of a single clipping point. Under the hood, multiple MOSFET stages interact as the gain increases, while the Bass and Treble controls live inside the feedback path, shaping tone and influencing how the gain engine loads each stage. A CMOS core with a naturally slower response adds to the rounded, elastic attack, letting chords feel wide and single notes turn vocal without harshness. It is also notably quiet for its range, making it a strong choice for players who stack drives, play dynamically, or want their guitar and amp to remain recognisable, only larger and more alive. Designed and built in Basel by RhPf Electronics, Mosphoros is a fully original circuit with its own mythology: the MOSFET Bringer.
Media
Videos
Demo by Alberto Barrero (EN)
Manuals

Manual (EN)

External Link
Technical data
Width
000.00 mm
Depth
000.00 mm
Height
000.00 mm
Weight
000.00 mm
Circuit type
analog
Voltage
9V DC, center negative
Current
10mA
Boards with this pedal
RhPf Electronics 2025 Lineup
RhPf Electronics 2025 Lineup

by Thomas & Simone RhPf Electronics
based on DUO 2.3
Blues
Metal
Rock
Blues
Metal
Rock
Likes2
February 2026 - Board update
More pedals from RhPf Electronics
Shodhana
OVERDRIVE
OVERDRIVE
Pedal Link Icon
RhPf Electronics
Shodhana