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Presonus ADL600 2 Channel High Voltage Preamp
Manufactured by » PreSonus
List price: $2,699.95
Our Price: $2,195.95
Quantity: Out of Stock

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User Manual

Presonus ADL600 2 Channel High Voltage Preamp

The Presonus ADL600 2 Channel High Voltage Preamp was designed by world-renown analog tube circuit designer Anthony DeMaria. The ADL600 utilizes a unique high voltage, Class A discrete design with three vacuum tubes per channel for maximum headroom and tonality. The ADL600 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. No expenses are spared with the ADL600 down to the last polypropylene film capacitor. The ADL600 is big, warm, smooth, and clear; a sound like no other.

left front Left Front

Presonus ADL600 2 Channel High Voltage Preamp Features:
High-Voltage Class A Dual Transformer Design
- >73dB Gain
-Selectable Microphone Input Impedance
-Switched Gain and Variable Fine Trim Controls
-Microphone, Instrument and Line Inputs
-Ultra Low Noise (-100dB S/N ratio)
-Variable High Pass Filter, 48V, -20dB Pad, Polarity Invert
-Analog VU and Fast-Acting LED Metering

right front Right Front

The Presonus ADL600 2 Channel High Voltage Preamp is designed for ultimate 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 rotary switch with three filter settings (40Hz, 80Hz, and 120Hz @ 6dB per octave) for passively and unobtrusively controlling room rumble and low frequency noise. The input gain attenuator is a military-grade rotary switch delivering 5dB step increments and a total preamplifier gain of over 72dB. The output stage is controlled 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 ADL600 also includes 48V phantom power and a -20dB pad both controlled by big sturdy military grade switches.

rear Rear Detail

The Presonus ADL600 2 Channel High Voltage Preamp is built with the finest components available in the world. The ADL600 is a fully discrete transformer input and output Class A design incorporating three military-grade vacuum tubes per channel operating at voltages of +/-300V power rails for maximum tube tonality and headroom. There are no op-amps or integrated circuits (IC's) in the signal path to ensure the purest sound possible. The dual transformer design also ensures ultra low noise operation with maximum common mode rejection.

The Presonus ADL600 2 Channel High Voltage Preamp is loaded with both fast-acting eight-segment LED meters for accurately detecting fast transients and peaks, as well as large high quality analog VU meters for metering output level.

The Presonus ADL600 2 Channel High Voltage Preamp sets a new standard in tonality for tube preamplifiers. Vocals become big, smooth and articulate, bass guitars are deep and tight, and mixes become richer than ever. The ADL600 is breathtaking both in terms of appearance and in sound performance. The ADL600 delivers a sound like no other.

Presonus ADL600 2 Channel High Voltage Preamp Specifications:
-Input Impedence
  -Microphone Selectable, 150/300/900/1500 Ohm
  -Balanced Line 2KOhm
  -Instrument 100KOhm
-Maximum Input Level
  -Microphone (1500Ohm, +20dB Pad out) +5dBu
  -Microphone (1500Ohm, +20dB Pad in) +25dBu
  -Balanced Line +30dBu
  -Instrument +30dBu
-Gain Range
  -Microphone (1500Ohm, +20dB Pad out) 18dB to 72dB
  -Balanced Line -12dB to 40dB
  -Instrument -5dB to 42dB
  -Noise Floor (all inputs, minimum gain) -95dBu (A-weighted)
  -Microphone Equivalent Input Noise (EIN) -125dBu (A-weighted)
  -Frequency Response 10Hz to 45KHz +/- 1dB
  -Maximum Output Level +23dBu (@ 0.5%THD+N)
  -Output Impedance 600 Ohm
  -Tube Complement (per channel) 1-12AT7A, 2-6922
  -Input Voltage (factory configured) 115 or 230 VAC / 100Watts
  -Dimensions 3.5" (H) X 17.0" (D) X 19.0" (W)


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