The Summer School Electronics Extra Credit Boost is a versatile dual-mode pedal that combines two distinct boost circuits into one compact unit. With the toggle switch set to the left, it delivers a one-knob op-amp style boost that enhances your signal with a full, rich tone, perfect for adding clarity and presence to your sound. Flip the switch to the right, and it transforms into a transistor-based boost with an adjustable Brightness control, allowing you to fine-tune the upper mids and highs for a cutting, solo-ready tone. This pedal excels when placed before or after overdrive pedals, especially in an edge-of-breakup amp setup, providing dynamic overdriven tones with ease. For more creative applications, crank the Brightness knob to produce an old-school radio or telephone effect. The Extra Credit Boost offers a simple yet effective way to shape your sound in any musical context.