ADL 600

The ADL 600 is an original high voltage two-channel microphone preamplifier designed by world-renown analog tube circuit designer Anthony DeMaria. The ADL 600 utilizes a unique high voltage, Class A discrete design with three vacuum tubes per channel for maximum headroom and tonality.

The ADL 600 is built by hand in the USA by PreSonus and utilizes the finest components in the world including switched attenuators, military-grade vacuum tubes, analog VU and LED meters, custom-designed proprietary transformers, and the list goes on.
There are no op-amps or integrated circuits (IC's) in the signal path to ensure the purest sound possible. The dual tranformer design also ensures ultral low noise operation with maximum common mode rejection.

No expenses are spared with the ADL 600 down to the last polypropylene film capacitor. The ADL 600 is big, warm, smooth, and clear; a sound like no other.

Control and Flexlibility
The ADL 600 is designed for ulitimate sonic performance, however its ease of use and flexibility allowing for many types of input sources further sets it above all other preamplifiers.
The input selector allows for selection between Hi-Z instrument input, line input and four different microphone impedances for a wide variety of sounds and applications.
The High Pass Filter is a rotory switch with three filter settings (40Hz, 80Hz, and 120Hz @ 6dB per octave) for passiively and unobtrosivly controlling room rumble and low frequency noise.
The input gain attenuator is a military-grade rotory switch delivering 5dB step increments and a total preamplifer gain of over 72dB.
The output stage is contolled by a fully variable conductive plastic attenuator delivering +/-10dB of fine tune trim adjustment to "dial-in" the perfect gain structure for the application at hand.
The ADL 600 also includes 48V phantom power and a -20dB pad both controlled by big sturdy military grade switches.

Metering
The ADL 600 is loaded with both fast-acting eight-segment LED meters for acurately detecting fast transients and peaks, as well as large high quality analog VU meters for metering output level.

Breathtaking
The ADL 600 sets a new standard in tonatily for tube preamplifiers. Vocals become big, smooth and articulate, bass guitars are deep and tight, and mixes become richer than ever. The ADL 600 is breathtaking both in terms of appearance and in sound performance. The ADL 600 delivers a sound like no other.