PreSonus DigiMAX D8
PreSonus DigiMAX D8
PreSonus DigiMAX D8

PreSonus DigiMAX D8

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DigiMAX D8

Our classic multichannel preamplifier.
For more than a decade, DigiMax-series preamp/converters have been relied on in countless recording studios worldwide. Based on our highly lauded XMAX Class A solid-state preamp, the DigiMax D8 has become a classic, offering eight of these prized preamps—enough to raise your entire studio rig to a higher level. And thanks to its eight-channel, 24-bit ADAT Optical output, the DigiMax D8 provides an excellent front end or expander for ADAT Optical-equipped digital-audio devices, such as our AudioBox 1818VSL, Studio 192, and Studio 192 Mobile audio/MIDI interfaces.

Superior sound.
A good microphone preamp boosts a mic’s level to almost 400 times that of the original signal, making the preamp one of the most important stages in an audio system. A cheap, off-the-shelf, op-amp-type mic preamp delivers thin, noisy, harsh results. In contrast, PreSonus® XMAX microphone preamps deliver incredibly high headroom, deep lows, smooth highs, and a rich overall sound. With XMAX preamps, your system’s sound quality is limited only by the microphone you plug in.

The right analog I/O makes the D8 a versatile front end.
Its complement of inputs and outputs makes the DigiMax D8 a versatile front end for virtually any system. Two convenient front-panel instrument inputs let you plug in guitars, bypassing the mic inputs. All other connections are in the rear, keeping the wiring out of your face. With eight XLR mic/line inputs, you can plug in virtually any mic- or line-level sound source. Eight ¼-inch, balanced, direct channel outputs allow you to add preamps to devices with line-level inputs or split the mic preamps between two devices.

Expand via ADAT Optical and record the whole band.
Eight-channel, 24-bit, 44.1/48 kHz ADAT Optical (“Lightpipe”) output makes the DigiMax D8 an excellent way to add more analog inputs to any third-party, Lightpipe-equipped digital-audio device. Better yet, add a DigiMax D8 to a Lightpipe-equipped PreSonus AudioBox® 1818VSL for a 2-rackspace rig with 16 XMAX-equipped recording channels—enough to record an entire live band. To keep your digital audio in sync with ultra-low jitter, the D8 receives word clock at its BNC connection and sends word clock via ADAT Optical.

Careful, it’s loaded!
The DigiMax D8 is a proven solution for adding eight professional microphone preamplifiers to any digital recording system. You can easily integrate it into your studio, thanks to plentiful I/O, variable trim control for each preamp, 48V phantom power (switchable in odd-even pairs), fast-acting LED metering, and a 20 dB pad. And you’ll love its sound! If you’re considering expanding your system, you owe it to yourself to check out the DigiMax D8 at your favorite PreSonus dealer.


  • 2 unbalanced ¼” instrument inputs (front panel; bypass Ch. 1 and 2 mic inputs)
  • 8 balanced rear-panel XMAX mic preamps
  • 1 BNC word-clock input
  • 8 balanced ¼” direct outputs (1 per channel)
  • 1 ADAT Lightpipe optical digital output (8 channels)

Meters, Controls, and Features

  • Individual channel-trim controls with -4 dB to +50 dB gain range
  • 48V phantom power for condenser microphones (switchable in pairs)
  • -20 dB pad on every channel
  • 4-segment, fast-acting LED input meter
  • Clock source (sets clock to external or internal with 44.1 or 48 kHz sample rate)


  • Professional-quality AD converters (+107 dBu dynamic range)
  • ADAT Lightpipe digital output: 8 channels at 24-bit resolution and 44.1 and 48 kHz internal sampling rate
  • Word-clock master via ADAT Lightpipe or slave to external word clock


  • Internal power supply with standard IEC connector



  • 1U rack-mountable, rugged steel chassis

Technical Specifications

Input Type                                                                          XLR Female Balanced
Frequency Response (±0.5 dB)                                         20 Hz to 50 kHz
Frequency Response (±3.0 dB)                                         20 Hz to 150 kHz
Input Impedance (Balanced)                                                           1600Ω
THD+N (unwtd, 1 kHz @ +4 dBu Output, Unity Gain)                    < 0.003%
EIN (unwtd, 55 dB Gain, 150Ω Input, 20 Hz to 22 kHz)                 -126 dBu
S/N Ratio (Unity Gain, unwtd, Ref. = +4 dBu, 20 Hz to 22 kHz)     >101 dB
Common Mode Rejection Ratio (1 kHz, 55 dB Gain)                      > 55 dB
Gain Control Range (±1 dB)    -4 dB to 50 dB
Maximum Input Level (Unity Gain, 1 kHz @ 0.5% THD+N)             +14 dBu
Signal Level LEDs                                                                            +10 dBu (0 dBFS)
Red/Clip (±0.5 dBu)                                                                          +4 dBu (-6 dBFS)
Yellow (±0.5 dBu)                                                                             -8 dBu (-18 dBFS)
Green (±0.5 dBu)                                                                              -14 dBu (-24 dBFS)
Phantom Power (±2 VDC)                                                                 +48 VDC
Instrument Input (channels 1 and 2 only)

Type                                                                      ¼” TRS Female Unbalanced
Input Impedance                                                  1 MΩ
Line Outputs
Type                              ¼” TRS Balanced
Output Impedance        51Ω

Digital Audio
ADC Dynamic Range (A-wtd, 48 kHz sample rate)                107 dB
Bit Depth                                                                                 24
Reference Level for 0 dBFS                                                    +10 dBu
Internal Sample Frequency, Selections                                  44.1, 48 kHz
External Sample Frequency, Input                                         75Ω BNC

Input Connector Type                         IEC
Input Voltage (factory configured)      90 to 230 VAC
Power Requirements (Continuous)    20W

Dimensions          1U rackmount
Height                  1.75” (44.45 mm)
Depth                   7” (177.8 mm)
Width                   19” (482.6 mm)
Weight                  6 lbs. (2.72 kg)
As a commitment to constant improvement, PreSonus Audio Electronics, Inc., reserves the right to change any specification stated herein, at any time, without notification.

Shipping costs are calculated at time of checkout by our shopping cart, based on the weight of your order and the method of shipment.

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