The Westerlund ONE is designed to be an extension of your sound, like a high-end preamp for your instrument. The ONE has plenty of gain and volume when pushed hard, but it also delivers a more balanced, richer, and more dynamic tone while remaining faithful to the nuances of the original signal. With three unique modes (Off or Amp Mode, Hard, Soft), Germanium/Silicon Clipping, Pre-Gain Boost, 3-Band EQ, and ample headroom, ONE offers a wide range of tones from transparent to tube-saturated, enhancing the musicality of your instrument and your own playing style. - Clipping mode Three unique FET-based op-amp gain stages and a FET tone recovery stage deliver tube-like tone and feel.・Tone switch The Bright/Dark switch gives you even more sonic flexibility, with "Bright mode" being suitable for normal use.・3-band EQ A musical and responsive equalizer with treble, mid and bass controls lets you tailor the ONE's sound to your liking. - Adjustable Boost The adjustable pre-gain boost can be combined with the overdrive to give you a wide range of sounds, from a slight increase in volume to amp-like saturation and compression. -Hard/soft clipping switch -Germanium/silicon diode switch -Clipping off = "Amp mode" -Musical 3-band EQ (treble, middle, bass) Dark/Bright Tone Switch Gain & Level Controls Adjustable Pre-Gain Boost Dimensions: 5" L x 3.5" W x 1.5" H Height: 1.5 inches (approximately 12.7cm x 8.9cm x 3.8cm) Power supply: 9V center negative, approx. 50mA