Kz Guitar Works launches BM Drive and Mid Booster / Buffer, revives Treble Booster

November 9, 2026 · 3 sources

Kz Guitar Works announced the Kz BM Drive and Kz Mid Booster / Buffer as new effect pedals, and confirmed that the Treble Booster, previously discontinued, is back in the range¹²³. The BM Drive and Mid Booster / Buffer were launched at the recent Tokyo Pedal Summit¹². Guitar Magazine reported the two new pedals on November 5, 2026, and gave a release date of early December 2026³.

The shop dates back to 2001, when ESP Craft Academy graduate Kaz (Kz) Ijyuin established it as a one-man operation specializing in close copies of Brian May's Red Special guitar¹². Guitar Pedal X describes the three minis as largely inspired by Brian May, especially the BM Drive and Treble Booster¹².

The BM Drive is a drive pedal intended to approach May's characteristic sound with an ordinary humbucker guitar and amp, without the unusual gear associated with it³. It has a Level knob and two toggle switches for high and low character, plus Gain and Tone mini trimmers on the side of the enclosure¹³. Guitar Magazine lists the trimmers as adjusting gain amount and sound resolution respectively³. The Mid Booster / Buffer is a pedal version of the Kz MBB Onboard effect built for the company's Kz Versa guitar, and it also works as a buffer when bypassed³. It has a Gain control, a Brightness switch and a Range switch¹³. Guitar Pedal X describes its topology as very similar to the Treble Booster, with a buffer onboard and a two-way mid boost targeting high or low mids¹². The Treble Booster has Level and Tone controls, with Edge / Warm and Tight / Fat switches¹².

Guitar Pedal X gives dollar equivalents of $175 for the Treble Booster, $190 for the BM Drive and $155 for the Mid Booster / Buffer¹². Guitar Magazine lists the BM Drive at 29,700 yen and the Mid Booster / Buffer at 24,200 yen, tax included³. Both new pedals measure 48.3 (W) x 93.5 (L) x 48.0 (H) mm and weigh 160 g, with true bypass switching; current draw is 4 mA for the BM Drive and 1 mA for the Mid Booster / Buffer at 9V³.

Guitar Pedal X reported that the new pedals had yet to receive overseas distribution¹².