The DigiMax D8 provides eight of these prized preamps—enough to raise your entire studio rig to a higher level. And that’s just the beginning of the story.
The DigiMAX D8 featuring 8 Class A XMAX mic preamplifiers, 8 direct analog outputs, and ADAT optical light pipe connectivity, making it the perfect solution to add 8 professional microphone preamps to any digital recording system or digital mixer with ADAT input including PreSonus FireStudio, DigiDesign’s HD and 003 systems, RME, Mackie and any many others.
At PreSonus, we know that the mic preamplifier is a key component in the sonic quality of a recording. Many other companies that offer mobile recording interfaces add the cheapest possible microphone preamplifier as an afterthought.
In contrast, the DigiMax D8 includes custom-designed, high-voltage, discrete, XMAX Class A microphone preamplifiers that are suitable for use with all types of microphones.
The job of a microphone preamplifier in an audio interface is to boost a microphone-level signal to line level before conversion to the digital domain. A good preamp boosts the level to almost 400 times that of the original signal, making the preamp one of the most important stages in an interface. A cheap, off-the-shelf, op-amp-type mic preamp delivers thin, noisy, harsh results.
But with XMAX preamps, the sonic quality is limited only by what microphone you plug into it.
XMAX preamplifiers are built with three key elements:
- High Voltage. The XMAX preamplifier runs on power rails of 30V. Most off-the-shelf, op-amp-based designs run on power rails of 10V to 18V. Higher-voltage power rails deliver more headroom, deeper lows, smoother highs, and a richer overall sound.
- Discrete components—not op-amps. We only use genuine transistors, resistors, and capacitors. Op-amps add noise, coloration, and harshness to a signal. Our discrete design delivers ultra-low noise and transparency.
Class A. Class A circuits have no crossover distortion and deliver purer, clearer, and more musical results than the Class AB designs that are found in many preamps.
- The net result of the XMAX preamp design is high headroom, low noise, wide dynamic range, extended frequency response, and—most important—musicality and transparency, with smooth highs, solid deep lows, and everything in between.
The Lightpipe Kid
With its eight XLR mic inputs and eight ¼” balanced, direct channel outputs, you can route each channel’s signal independently. This makes the DigiMax D8 a premium front end for virtually any system.
And thanks to its eight-channel, 24-bit ADAT Lightpipe output (which operates at 44.1 or 48 kHz), the DigiMax D8 provides an excellent front end for Lightpipe-equipped digital-audio devices, such as Avid's Digi 003. You’ll immediately hear the improvement.
Better yet, add a DigiMax D8 to a Lightpipe-equipped PreSonus AudioBox 1818VSL. This combination provides a two-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 Lightpipe.
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
Type ¼” TRS Balanced
Output Impedance 51Ω
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)