Presonus ADL600

High Voltage Dual Microphone Preamp

Order Code: ADL600
Our Price: $2,999.00

Black is the new black. And in this case, black is back with some serious grunt! Handcrafted in USA, the ADL600 is filled with valve goodness, and each of the two channels gives you selectable inputs (line, instrument, mic - 1500, 900, 300 & 150ohm), a 3-position high-pass filter switch, big gain and trim pots, plus +48v phantom and -20dB pad switches. Accurate VU for input metering, 2 x front panel instrument DI, and all XLR I/O on the rear.

If you're after a high-end preamp to really bring out the best in your microphone arsenal, this is an excellent choice.

Photo of Presonus ADL600 available from Factory Sound
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  • Adl600_gain
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  • Adl600_vu
  • Adl600_rear
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  • Adl600_inputs
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2 input channels, each with:

  • Mic, line, and instrument inputs
  • High-voltage, Class A, dual-transformer, vacuum-tube preamp
  • 3 military-grade vacuum tubes
  • Input-source select
  • Variable mic-input impedance (150, 300, 900, 1,500Ω)
  • Variable high-pass filter (40, 80, 120 Hz)
  • 8-position Gain switch
  • Variable Trim adjustment for final stage
  • 48V phantom power
  • -20 dB pad
  • Polarity-reverse switch
  • Backlit VU meter (output level) with -6 dB switch (for metering hot signals)
  • > 73 dB of gain


  • 2 unbalanced ¼” instrument inputs (front panel)
  • 2 transformer-balanced XLR line inputs
  • 2 transformer-balanced XLR mic inputs
  • 2 transformer-balanced XLR line outputs


  • 2U 19” rack-mountable, rugged steel chassis
  • Internal power supply with standard IEC connector
  • Chassis-ground link connectors (lift chassis ground)