The Warm Direct Box Active is designed for use with electric instruments such as basses and guitars or acoustic instruments with preamps and 1/4" outputs. The design is based around renowned electrical components such as the custom-wound CineMag transformer at its core. With its rugged extruded aluminum enclosure, rugged metal switches, and Pad knob it will provide a warm tone over long cable runs as well as durability on the road.This is the active model which sports lower THD and a highly linear performance in the audible frequency spectrum; this unit reproduces frequencies between 20 Hz and 70 kHz accurately to within ±0.5 dB. You can either power it with two 9V batteries or over 48V phantom power from corresponding interfaces or mixers. Two buttons let you select the power source. It can also act in passive mode. Wired for Integrity and Durability Every aspect of the Warm Direct Box Active is designed for sonic integrity, from custom-wound CineMag USA transformers, to metal switches and connectors, to gold-plated circuit traces Active Specifications POWER: 48V PHANTOM OR TWO 9V BATTERIES. CAN ALSO BE USED PASSIVELY CUSTOM-WOUND CINEMAG USA OUTPUT TRANSFORMER CONVERTS INSTRUMENTS TO MIC-LEVEL SIGNALS WITHOUT SIGNAL DEGRADATION IDEAL SOLUTION FOR PLUGGING YOUR INSTRUMENT DIRECT INTO ANY MIC PRE TOP-QUALITY CLASS A COMPONENTS WITH GOLD-PLATED TRACES ON CIRCUIT BOARD RUGGED ALUMINUM CONSTRUCTION PAD: VARIABLE FROM -3 TO -30DB BALANCED OUTPUT: 600 OHMS, MIC LEVEL INPUT IMPEDANCE: 1 MEG OHMS THD: .01% FROM 20HZ TO 50HZ. LESS THAN .003% FROM 50HZ TO 20KHZ FREQUENCY RESPONSE: 10HZ TO 90KHZ +/- 0.5DB More information - Warm Audio