From the build document of the Southern Fried triple combo that has this compressor in the circuit…

• SW1 UP: 10k (150k shorted). This is the fastest release time.
• SW1 MIDDLE: 10k + 150k in series which is the longest release.
• SW1 DOWN: 10k + 39k (which is in parallel to the150k) is medium attack.

While it does not affect the overall tone a fast attack setting will reduce the volume of the initial pick strike, and depending on the amount of
sustain, this can sound dramatic. For a more natural, transparent effect, a slower attack time will let the initial pick or finger attack through.

Usage Guide:
Gain Mapping: Effective gain mapping is vital for optimizing your combo pedal setup. Avoid the inclination to turn all knobs to 10, as this rapidly leads to unwanted noise and feedback. Instead, explore the intricacies of control mapping to unlock a diverse range of tones. Consider that each of the three circuits contributes a substan7al level of Gain, and when used together, they combine.

1. Compressor: The Compressor is a versatile tool that offers both subtle tone smoothing and heavy compression. Start by adjusting
the Volume for a mild boost. Set the Sustain knob to noon for a transparent sustain, or turn it up fully for a Southern Fried squash.
This modified circuit provides an even tone that is not overly bass-heavy, ensuring your sound cuts through the mix. Adjust the
attack switch to match your picking style for optimal feel. For a more obvious compression effect, set the SW1 switch up or down;
for more transparent compression, set it in the middle.
2. Boost: While a solo boost is obvious, using the Boost at slightly lower settings as a buffer for the Dumbletone preamp may not be as
readily apparent. Its flat frequency response preserves your tone while adding extra sparkle, making it perfect for this scenario.
3. Dumbletone: Start with all four knobs set to noon. You have complete control over Volume, Gain, Tone, and Voicing.
4. Power Supply: Always use a 9-volt power supply (nothing higher) with a 2.1mm plug and a negative 7p.

Hope this helps…