This updated version of the ODR now has a bass cut, 9-18-volt input, and glow-in-the-dark knobs. The ODR-1 is rated the best overdrive by Nashville studio guitarists and creates a natural, tube-amp style overdrive that is versatile, amp-like and affordable. The ODR-1 has been on the market for over 30 years and remains a top choice. It creates crunchy rock and blues sounds or extra boost for soloing without smothering the natural character of your guitar's tone. The Specturm controls optimizes tones, from single-coil chime to powerful humbucker rock. When adjusting the Spectrum control up or down the circuit ensures you have plenty of clarity and full dymanic range.