Hartman Electronics has updated its SFZ Dual-Stage Hybrid Fuzz pedal to include external 18vDC power capability. Users can run the pedal using two 9v batteries or via 18vDC external power. Hartman has also made the Bias control – previously available as an add-on option – standard in the SFZ. All pedals now ship standard with individual, dedicated bias controls for both the Silicon and Germanium fuzz stages. The Hartman SFZ contains two versions of the classic Dallas Arbiter Fuzz Face circuit together in a single pedal. Each pedal is assembled using measured and auditioned pairs of new old-stock Germanium and Silicon BC108 transistors.