Radial Engineering Firefly DI, 1 channel Tube-Di-Box for Studio and Live application, Class A Front End drives 12AX7 Tube, 2x 6,3mm Jack Input, 2x 6,3mm Jack Thru, 2x 6,3mm Jack Tuner out, switchable Gnd-Lift, switchable phase 180°, switchable Thru-Put to switch between original- and Signal with Tube, Drag Control Load Connection for automatc impedance correction with the impedance of the Instrumenten-Pickups, adjustable Low Cut, handle made of metall on the top