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PreSonus DigiMax D8 8 Channel Mic Preamp with Digital Output

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Product Description

The Presonus DigiMax D8 features the best of both worlds including eight analog XMAX microphone preamps along with a 24-bit ADAT digital output.
Variable trim control is provided on all eight channels along with 48V phantom power, ultra-fast acting LED metering and a 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 for each channel 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 DigiMax D8 Features

  • 8 XMAX class A microphone preamps with trim control
  • 24-bit resolution ADAT digital output
  • 44.1 and 48K sampling rates
  • External sync via BNC word clock input
  • Direct outputs on every channel
  • LED input metering
  • -20dB Pad on every channel

Product Specifications

Presonus DigiMax D8 Specifications

Microphone Preamplifier

  • Type: XLR Female Balanced
  • Frequency Response (+/-0.5 dB): 20 Hz to 50 kHz
  • Input Impedance (Balanced): 1600 Ohms
  • THD+N (unwtd, 1 kHz @ +4 dBu Output, Unity Gain): < 0.003%
  • EIN (unwtd, 55dB Gain, 150 Ohms Input, 20Hz to 22 kHz): -126 dBu
  • S/N Ratio (Unity Gain, unwtd, Ref. = +4 dBu, 20Hz to 22 kHz): > 101 dB
  • Common Mode Rejection Ratio (1 kHz, 55 dB Gain) > 55 dB
  • Gain Control Range (+/- 1dB): -4 dB to 50 dB
  • Maximum Input Level (Unity Gain, 1 kHz @ 0.5% THD+N): +14 dBu
  • Phantom Power (+/-2 VDC): +48 VDC

Instrument Input (channels 1 and 2 only)

  • Type: 1/4-inch TRS Female Unbalanced
  • Input Impedance: 1 MOhms

Line Outputs

  • Type: 1/4-inch TRS Balanced
  • Output Impedance: 51 Ohms

Digital Audio

  • ADC Dynamic Range (Awtd, 48 kHz Sample Rate): 107dB
  • Bit Depth: 24
  • Reference Level for 0dBFS: +10 dBu
  • Internal Sample Frequency Selections (kHz): 44.1, 48
  • External Sample Frequency Input: 75 Ohms BNC


  • Input Connector Type: IEC
  • Input Voltage Range: 90 to 230 VAC
  • Power Requirements (Continuous): 20W
  • Weight: 6 lbs. (2.72 KG)

Helpful Info about the Manufacturer
Phone:  225-216-7887 Warranty:  New Products: 1 Year. B-stock: 90 Days.
J. Kumjian from Lake Ann, MI
Ease of Use
Excellent Value for a Preamp!
Would you consider this product to be made well? How dependable?
It is a very well-built unit and has been dependable so far.
What do you consider to be the best features of this product? What features would you add to this product if you could?
The best feature of this product is it's ease of use. The only thing I would have done differently is put the phantom power switches on the front panel as opposed to the back.
Ease of Use
How easy is this product to use? How easy is the product to use with other products? Did it take long for you to learn to use this product? Was the manual helpful? How playable do you consider this product to be?
The Presonus D8 is simple to has worked well with my HD24 Hard Drive Recorder. I took it out of the box, hooked it up and was able to make it work without having to "study" the manual.
How is the tone?
The tone quality is, for the most part, clear and VERY quiet for such a low-cost unit. The tone has an almost tube quality, even without tubes...a fairly warm, smooth sound.
How has it stood up over time?
I have not had the unit long, but I have used it pretty regularly and have not had a single issue with the unit.
Your general opinion of this product.
I think that it has surpassed what I had expected given the lower price than other models.
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