PreSonus DigiMax D8 8 Channel Mic Preamplifier with 44.1 and 48kHz Digital Output

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About PreSonus D8

The DigiMax D8 is an 8 channel preamplifier featuring 8 award-winning class A XMAX mic preamps with 24-bit ADAT digital output. All eight preamps include variable trim control, 48V phantom power, ultra-fast acting LED metering and 20 dB pad. In addition, 2 instrument inputs are located on the front panel for direct Hi-Z instrument input. Balanced TRS direct analog outputs are located on the rear panel for routing and flexibility.

The DigiMax D8 also includes word clock sync input for ultra-low jitter and robust synchronization. The DigiMax D8 is the perfect solution to add eight professional microphone preamplifiers to any digital recording system with ADAT optical lightpipe expansion capability including Digidesign's HD and 003 systems, RME, YAMAHA, Alesis, Mackie, and many others.

PreSonus D8 Features

  • 8 dual-purpose front-panel channel inputs, each with high-headroom Class A XMAX mic preamplifiers
  • 8 mic/line inputs
  • 2 instrument inputs (front panel; Ch. 1 and 2, bypasses mic input)
  • 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
  • Analog direct outputs
  • 4-segment, fast-acting LED input meter
  • 8 channels of ADAT optical output at 44.1 or 48 kHz
  • Clock source (sets clock to external or internal with 44.1 or 48 kHz sample rate)
  • 1U 19" rack-mountable, rugged steel chassis
  • Internal power supply with standard IEC connector

PreSonus D8 Specifications

Microphone Preamplifier 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)
1600 Ohms
< 0.003% (unwtd, 1 kHz at +4 dBu Output, Unity Gain)
-126 dBu (unwtd, 55dB Gain, 150 Ohms Input, 20Hz to 22 kHz)
S/N Ratio
> 101 dB (Unity Gain, unwtd, Ref. = +4 dBu, 20Hz to 22 kHz)
Common Mode Rejection Ratio
> 55 dB (1 kHz, 55 dB Gain)
Gain Control Range (+/- 1dB)
-4 dB to 50 dB
Maximum Input Level
+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 Type
1/4" TRS Female Unbalanced
Input Impedance
1 MOhms
Line Outputs Type
1/4" TRS Balanced
Output Impedance
51 Ohms
ADC Dynamic Range
107dB (Awtd, 48 kHz Sample Rate)
Bit Depth
Reference Level for 0dBFS
+10 dBu
Internal Sample Frequency Selections
44.1, 48 (kHz)
External Sample Frequency Input
75 Ohms BNC
Power Input Connector Type
Power Input Voltage (factory configured)
90 to 230 VAC
Power Requirements (Continuous)
Dimensions (W x H x D)
19" x 1.75" x 7/ 48.26 x 4.44 x 17.78 cm
6.0lbs / 2.72 kg
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