Get the all-tube 610 Console Mic Preamp sound in a rugged, “go anywhere” design. Record through the classic tube circuit of the Putnam 610 console mic preamp and DI Add tube girth and detail to any mic Sculpt signals with Gain, Level, and Impedance controls for maximum tonal variety Craft your sounds with classic UA tube circuits, hand-built in the USA Details Classic Putnam 610 console mic preamplifier and DI Legendary all-tube sound, at a project studio price Gain, Level, and Impedance selection for maximum tonal variety Portable design for studio, desktop or stage Rugged construction-steel chassis DI features include Thru and Mic/Line level output Hand-built in USA; backed by 1-year limited warranty Specs Input Impedance Mic Input - Selectable 450 ohms (Lo-Z) or 1.6 kilohms (Hi-Z) DI Input - Selectable 2.2 megohms (Lo-Z) or 50 kilohms (Hi-Z) Output Load Impedance 20 Hz to 20 kHz +/- 1 dB Maximum Gain 61 dB Tube Complement (1) 12AX7, (1) 12AT7 Maximum Mic Input Level -12 dBu, 1.0% THD+N Ratio Maximum Instrument Input Level +4 dBu, 1.0% THD+N Ratio Maximum Gain Mic Input 55 dB (1.6K ohm input), 60 dB (450 ohm input) Mic/Instrument In Frequency Response 20 Hz to 20 kHz, +/- 0.1 dB Maximum Gain Instrument Input 37 dB Dimensions L: 14" W: 5 3/4" H: 5" Weight 9 lbs.