Baton Rouge, LA (July 10, 2012)—PreSonus has introduced the ADL 700 channel strip, which combines a Class A tube preamplifier with a variable, FET-based compressor and a four-band semi-parametric equalizer. The new channel strip provides separate balanced XLR mic, balanced XLR line, and ?” TS instrument inputs and a single balanced XLR output.
The ADL 700 incorporates a single-channel version of the PreSonus ADL 600 two-channel tube preamplifier, which was designed by Anthony DeMaria. It incorporates one 12AT7 and two 6922 vacuum tubes per channel, operating with ±300V power rails. The dual-transformer design aims to provide low-noise operation with common-mode rejection.
Among the features of ADL-series preamps is an Input Source Select switch with variable mic-input impedance, providing choice among signal sources and patching the selected input through the signal chain, completely bypassing the other two inputs. It also provides a choice of four mic-input impedances: 1500Ω, 900Ω, 300Ω, and 150Ω. Lowering or raising the ADL 700 mic-input impedance can reportedly create coloring and filtering effects, enabling a variety of tonalities without using the EQ.
The ADL 700 compressor features include fully variable attack, release, threshold, ratio, makeup gain, and bypass. When Threshold is turned fully counterclockwise to the ST position, the onboard compressor controls are bypassed, and compression is controlled externally via a Stereo Link connection to a second ADL 700.
The preamp offers 48V phantom power, polarity reverse, and a -20 dB pad. In addition, it provides variable mic-input gain, employing an 8-position rotary switch that provides 35 dB of gain in 5 dB increments. A Trim potentiometer (±30 dB) allows you to make fine adjustments to the final preamp stage of the ADL 700 input.
PreSonus Audio Electronics, Inc.