• Details
  • Features
  • Tech Specs
  • Reviews

*Please note  -- This pre-owned item may show signs of use. Please refer to the photos for details of the product. 

The PreSonus ADL-600 is a premium, dual-channel Class A vacuum-tube microphone preamplifier designed to deliver exceptional clarity, warmth, and dynamic range for professional recording applications. Developed in collaboration with renowned tube-circuit designer Anthony DeMaria, the ADL-600 features a high-voltage tube architecture and dual-transformer signal path that produce a rich, detailed sound with smooth harmonic character and generous headroom. Its versatile design accommodates microphones, line-level sources, and instruments, making it well suited for recording vocals, guitars, drums, keyboards, and other critical audio sources.

Equipped with selectable microphone input impedance, switchable 48V phantom power, a -20dB pad, polarity reversal, and a three-position high-pass filter, the ADL-600 provides extensive control over signal conditioning. Independent gain and output controls allow precise level management, while illuminated VU meters and LED peak metering offer clear visual monitoring. Housed in a rugged 2U rackmount chassis, the PreSonus ADL-600 combines classic analog tube character with professional studio flexibility, making it a valuable addition to high-end recording and mixing environments.

More Information
Product Name Presonus ADL-600 2-Channel Microphone Preamp
Brand Presonus
Condition Pre-Owned
MPN ADL-200
Shipping Option Free Shipping to the Continental U.S.

What's in the Box?

  • Presonus ADL-600 2-Channel Microphone Preamp
  • Dual-channel, high-voltage Class A vacuum-tube microphone preamplifier
  • Designed in collaboration with renowned tube-circuit designer Anthony DeMaria
  • Dual-transformer signal path delivers warm, smooth, detailed sound with generous headroom
  • Three vacuum tubes per channel for rich, expressive analog character
  • Microphone, line, and instrument inputs for versatile studio applications
  • Selectable microphone input impedance: 150Ω, 300Ω, 900Ω, and 1,500Ω
  • Variable high-pass filter with 40Hz, 80Hz, and 120Hz settings
  • Eight-position gain switch with variable output trim for precise level control
  • Switchable +48V phantom power for condenser microphones
  • -20dB pad for handling high-level microphone signals
  • Polarity-reverse switch for managing phase relationships
  • Backlit analog VU meter with selectable -6dB metering range
  • Eight-segment LED metering for monitoring signal peaks
  • Transformer-balanced XLR microphone and line inputs and outputs
  • Dual front-panel 1/4-inch instrument inputs
  • Rugged 2U, 19-inch rackmount steel chassis
Product Type 2-Channel Tube Microphone Preamp
Channels 2
Circuit Design Discrete Class A, high-voltage tube
Transformers Dual-transformer design
Tube Complement 6 tubes total: 2 × 12AT7A and 4 × 6922
Maximum Gain Greater than 73dB
Microphone Gain Range 18dB to 72dB
Line Gain Range -12dB to +40dB
Instrument Gain Range -5dB to +42dB
Microphone Input Impedance 150Ω, 300Ω, 900Ω, 1,500Ω
Line Input Impedance 2kΩ
Instrument Input Impedance 100kΩ
Maximum Microphone Input Level +5dBu (pad off); +25dBu (pad on)
Maximum Line Input Level +30dBu
Maximum Instrument Input Level +30dBu
Equivalent Input Noise (EIN) -125dBu, A-weighted
Noise Floor -95dBu, A-weighted, at minimum gain
Frequency Response 10Hz – 45kHz (±1dB)
Maximum Output Level +23dBu at 0.5% THD+N
Output Impedance 600Ω
High-Pass Filter 40Hz, 80Hz, 120Hz
Phantom Power +48V
Pad -20dB
Analog Inputs 2 × XLR microphone, 2 × XLR line, 2 × 1/4-inch instrument
Analog Outputs 2 × XLR line output
Metering Backlit VU meters and 8-segment LED meters
Power Supply Internal
Power Requirements 115V or 230V AC, 100W, factory-configured
Rack Format 2U, 19-inch rackmount
Dimensions (W × H × D) 19 × 3.5 × 17 inches
Weight 28 lb
Status Discontinued
Additional Information Specifications are based on the manufacturer's documentation and owner's manual.
Brand PreSonus
Details

*Please note  -- This pre-owned item may show signs of use. Please refer to the photos for details of the product. 

The PreSonus ADL-600 is a premium, dual-channel Class A vacuum-tube microphone preamplifier designed to deliver exceptional clarity, warmth, and dynamic range for professional recording applications. Developed in collaboration with renowned tube-circuit designer Anthony DeMaria, the ADL-600 features a high-voltage tube architecture and dual-transformer signal path that produce a rich, detailed sound with smooth harmonic character and generous headroom. Its versatile design accommodates microphones, line-level sources, and instruments, making it well suited for recording vocals, guitars, drums, keyboards, and other critical audio sources.

Equipped with selectable microphone input impedance, switchable 48V phantom power, a -20dB pad, polarity reversal, and a three-position high-pass filter, the ADL-600 provides extensive control over signal conditioning. Independent gain and output controls allow precise level management, while illuminated VU meters and LED peak metering offer clear visual monitoring. Housed in a rugged 2U rackmount chassis, the PreSonus ADL-600 combines classic analog tube character with professional studio flexibility, making it a valuable addition to high-end recording and mixing environments.

More Information
Product Name Presonus ADL-600 2-Channel Microphone Preamp
Brand Presonus
Condition Pre-Owned
MPN ADL-200

What's in the Box?

Presonus ADL-600 2-Channel Microphone Preamp
Features
  • Dual-channel, high-voltage Class A vacuum-tube microphone preamplifier
  • Designed in collaboration with renowned tube-circuit designer Anthony DeMaria
  • Dual-transformer signal path delivers warm, smooth, detailed sound with generous headroom
  • Three vacuum tubes per channel for rich, expressive analog character
  • Microphone, line, and instrument inputs for versatile studio applications
  • Selectable microphone input impedance: 150Ω, 300Ω, 900Ω, and 1,500Ω
  • Variable high-pass filter with 40Hz, 80Hz, and 120Hz settings
  • Eight-position gain switch with variable output trim for precise level control
  • Switchable +48V phantom power for condenser microphones
  • -20dB pad for handling high-level microphone signals
  • Polarity-reverse switch for managing phase relationships
  • Backlit analog VU meter with selectable -6dB metering range
  • Eight-segment LED metering for monitoring signal peaks
  • Transformer-balanced XLR microphone and line inputs and outputs
  • Dual front-panel 1/4-inch instrument inputs
  • Rugged 2U, 19-inch rackmount steel chassis
Tech Specs
Product Type 2-Channel Tube Microphone Preamp
Channels 2
Circuit Design Discrete Class A, high-voltage tube
Transformers Dual-transformer design
Tube Complement 6 tubes total: 2 × 12AT7A and 4 × 6922
Maximum Gain Greater than 73dB
Microphone Gain Range 18dB to 72dB
Line Gain Range -12dB to +40dB
Instrument Gain Range -5dB to +42dB
Microphone Input Impedance 150Ω, 300Ω, 900Ω, 1,500Ω
Line Input Impedance 2kΩ
Instrument Input Impedance 100kΩ
Maximum Microphone Input Level +5dBu (pad off); +25dBu (pad on)
Maximum Line Input Level +30dBu
Maximum Instrument Input Level +30dBu
Equivalent Input Noise (EIN) -125dBu, A-weighted
Noise Floor -95dBu, A-weighted, at minimum gain
Frequency Response 10Hz – 45kHz (±1dB)
Maximum Output Level +23dBu at 0.5% THD+N
Output Impedance 600Ω
High-Pass Filter 40Hz, 80Hz, 120Hz
Phantom Power +48V
Pad -20dB
Analog Inputs 2 × XLR microphone, 2 × XLR line, 2 × 1/4-inch instrument
Analog Outputs 2 × XLR line output
Metering Backlit VU meters and 8-segment LED meters
Power Supply Internal
Power Requirements 115V or 230V AC, 100W, factory-configured
Rack Format 2U, 19-inch rackmount
Dimensions (W × H × D) 19 × 3.5 × 17 inches
Weight 28 lb
Status Discontinued
Additional Information Specifications are based on the manufacturer's documentation and owner's manual.
Brand PreSonus
Reviews