The Model 583E is a 500 series tube preamp with an EQ section that can function independently as two separate modules. Incredible on microphone source, it also features a Hi-Z input for instruments. The 583E features a single channel vacuum tube preamplifier with LaChapell Audios proprietary TrueTube™ technology. TrueTube delivers 250V to the tube, properly powering it so that it operates at its full potential and is not starved for power. In addtion, the 583E features an ultra-clean EQ section that can follow the preamp or operate as a separate module.

PREAMP SPECIFICATIONS Internal Gain 0 to >72dB THD+N 0.10% (minimum) Frequency Response 10Hz to 50KHz Max Output (1% THD+N) +26dBu Typical EIN -121dBu Input Impedance 1.5KΩ Tube Compliment 1 x 12AX7/ECC83 EQ SPECIFICATIONS Noise Floor -95dB THD+N 0.012% (@ +4 output) Frequency Response 10Hz to 50KHz (flat) Cut / Boost Range +/- 8dBu Maximum Input Level ≥25dBu Input Impedance 48KΩ Input / Output Type Transformerless Stated specifications are typical measurements and subject to change without notice. All measurements taken while driving a 40kohm load with a 1khz source.