The Sable is one of the first pedals manufactured by Acouphonic. This is an overdrive with a vintage design. The circuit is built around a silicon transistor and two diodes, one germanium, and the other silicon, to obtain a very aggressive overdrive while keeping a certain softness. This pair of diodes allows you to come and clip the signal and approach a saturated triode.
The gain adjustment is not really one, it drives the supply voltage of the transistor to make it work in rarely explored operating ranges. Coupled with a simple Mercure boost, it easily ventures into your fuzzy sound territories
The frequency response of the Mercure: 30 Hz – 30 KHz at -3 dB
Output load: 10 KΩ | Input signal 10 Hz at 30 KHz: 50 mV
Input impedance: 46 KΩ
Output impedance: 3,5 KΩ