Presonus Digimax FS 8Ch Preamp With ADAT I/O
The DigiMax FS is an eight-channel microphone preamplifier, with 24-bit/96k ADAT dual SMUX I/O and word clock I/O. Loaded with direct outputs and inserts on every channel, the DIGIMAX FS is the perfect hardware expansion for your FireStudio or any digital recording system with optical lightpipe expansion capability including DigiDesign’s HD and 002 systems, RME, YAMAHA, Alesis, Mackie and many others.
The DigiMax FS is loaded with new patented JetPLL™ jitter reduction technology ensuring ultra-high converter performance, fast and robust locking through a wide range and variation of frequencies and noise shaping to remove nearly all audio band jitter.
8 XMAX Class A Preamplifiers
The DigiMax FS includes eight custom-designed high-voltage, discrete, XMAX Class A microphone preamplifiers for all types of microphones. The job of a microphone preamplifier is to boost microphone level signals to line level so that the signal can be converted from analog to digital. This mic to line boost is generally a preamplification of over 400 times the voltage of the original mic level signal. This preamplification stage is one of the most important stages that the signal will go through before converted to digital, and is why a high performance preamplifier is important to achieving great results.All XMAX preamplifiers are built with the same three 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 an overall fuller sound.
Discrete - No op amps. Only transistors, resistors and capacitors. Op amps add noise, coloration and harshness to a signal. Discrete designs deliver ultra low noise and transparency.
Class A - When a circuit is running in Class A mode the circuit is always in an "on" state operating at its optimal voltage requirements. Class A mode has zero crossover distortion and delivers purer, clearer and more musical sonics than class A/B designs which are found in most op-amp circuits.
The net result of the XMAX preamp design is high headroom, low noise, wide dynamic range and wide frequency range, and most importantly, musicality and transparency - smooth highs, solid deep lows, and everything in between.
Digital Converters and JetPLL Sync
The synchronization of the DigiMax FS is handled by patented JetPLL™ jitter reduction technology. JetPLL™ incorporates noise shaping to virtually remove all audio band jitter. JetPLL™ ensures the highest converter performance possible, resulting in better stereo separation and clearer more transparent audio. JetPLL™ delivers ultra-fast locking to any digital format, through a wide range of frequencies and is extremely robust, and tolerant of wide variations in clock frequencies. JetPLL™ ensures near perfect clock performance when networking audio devices thus creating the most stable and robust synchronization to all devices.Features:
- 8 dual-purpose front-panel channel inputs, each with high-headroom Class A XMAX™ mic preamplifiers
- 6 mic/line inputs
- 2 mic/instrument inputs
- Individual channel-trim controls with 0 to +55 dB gain range
- 48V phantom power for condenser microphones (switchable in pairs)
- Analog direct outputs
- Insert points (send/receive)
- Input clip indicator (LED)
- 8 channels of ADAT optical I/O at up to 96 kHz (via dual SMUX)
- Main-output gain control
- External clock-source select (ADAT or BNC)
- Sample-rate selector (44.1, 48, 88.2, and 96 kHz) with LED status indicators
- Input/Output
- 2 balanced combo mic/instrument inputs (front panel)
- 6 balanced combo mic/line inputs (front panel)
- BNC Word clock input and output
- 2 ADAT optical inputs (second input is for 88.2 or 96 kHz dual SMUX)
- 2 ADAT optical outputs (second output is for 88.2 or 96 kHz dual SMUX)
- 8 balanced ¼” DAC outputs
- 8 balanced ¼” analog direct outputs (1 per channel)
- 8 unbalanced ¼” TRS insert points (send/receive; 1 per input)
- Digitalia
- 8 channels of ADAT Lightpipe digital I/O at up to 96 kHz (via dual SMUX)
- 24-bit resolution and up to 96 kHz sampling rate
- Professional-quality A/D/A converters (ADC 107 dBu, DAC 110 dBu dynamic range)
- JetPLL™ Jitter Elimination Technology (improved stereo imaging and clarity)
- 75Ω word-clock Terminate switch
- Physical
- 1U 19” rack-mountable, rugged steel chassis
- Sealed, detented, metal rotary controls
Specifications:
| Microphone Preamp (XLR Balanced) All measurements Microphone Input to Direct Output | ||
Frequency Response (+0,- 0.5dB) | 20Hz to 40KHz | |
| Frequency Response (+0/-3.0 dB) | 20Hz to 100KHz | |
| Input Impedance | 1600 Ohm | |
| THD+N (unwtd, 1KHz @ +4dBu Output, Unity Gain) | <0.003% | |
| EIN (unwtd, 55dB Gain, 150 Ohm Input, 20Hz to 22KHz) | -126dBu | |
| S/N Ratio (Unity Gain, unwtd, Ref. = +4dBu, 20Hz to 22KHz) | >101dB | |
| Common Mode Rejection Ratio (1KHz, 55dB Gain) | >55dB | |
| Gain Control Range (+/-1dB) | 0dB to 55dB | |
| Maximum Input Level (Unity Gain, 1KHz @ 0.5% THD+N) | +11dBu | |
| Phantom Power (+/- 2VDC) | +48VDC | |
 | ||
| Instrument Input (1/4” TRS, Preamps 1 & 2) | ||
| Input Impedance | 1 Mega Ohm | |
| ||
| Line Inputs (1/4” TRS, Preamps 3 to 8) All measurements Line Input to Direct Output | ||
Frequency Response (+0,- 0.5dB) | 20Hz to 60KHz | |
| Frequency Response (+0/-3.0 dB) | 20Hz to 150KHz | |
| Input Impedance (Balanced) | 10 KOhm | |
| THD+N (unwtd, 1KHz @ +4dBu Output, Unity Gain) | < 0.0015% | |
| S/N Ratio (Unity Gain, unwtd, Ref. = +4dBu, 20Hz to 22KHz) | >101dB | |
| Gain Control Range (+/-1dB) | -12dB to +10dB | |
| Maximum Input Level (Unity Gain, 1KHz @ 0.5% THD+N) | +22dBu | |
| ||
| Insert Jacks (1/4” TRS) | ||
| Send Output Impedance (Unbalanced, Ring) | 51 Ohm | |
| Return Input Impedance (Unbalanced, Tip) | 10KOhm | |
| ||
| Direct Outputs/DAC Outputs (1/4” TRS) | ||
| Output Impedance (Impedance Balanced) | 51Ohm | |
| ||
| Signal Level LEDs | ||
| Clip (+/- 0.5dBu) | +18dBu | |
| ||
| Digital Audio | ||
| ADC Dynamic Range (Awtd, 48KHz Sample Rate) | 107dB | |
| DAC Dynamic Range (Awtd, 48KHz Sample Rate) | 110dB | |
| Bit Depth | 24 | |
| Reference Level for 0dBFS | +18dBu | |
| Digital Audio Output (2-Toslink™ Connectors, 8 channels) | ADAT/SMUX | |
| Digital Audio Input (2-Toslink™ Connectors, 8 channels) | ADAT/SMUX | |
| Internal Sample Frequency Selections (KHz) | 44.1, 48, 88.2, 96 | |
| External Sample Frequency Inputs | BNC, ADAT (SMUX) | |
| BNC Word Clock Output Level (75 Ohm load) | 4.5V | |
| BNC Word Clock Input Level Range | 3.0 to 5.5V | |
| Jitter Specification | <20ps RMS, 20Hz-20kHz | |
| Jitter Attenuation | >60dB; 1ns in approx.1ps out | |
| ||
| Power | ||
| Input Voltage (factory configured) | 18 to 30VDC | |
| Power Requirements (Continuous) | 15W | |
| DC Input Connector Type | 5.5mm OD/2.5mm ID Barrel, Center Positive | |
| External Switching Power Supply | 90-230VAC/35W | |
| ||
| Physical | ||
| Main Chassis | ||
| Package Type | 13U - steel chassis | |
| Dimensions | 19(W) X 1.75(H) X 7(D) inches | |
| Weight | 7.0lbs | |
| As a commitment to constant improvement, PreSonus Audio Electronics, Inc. reserves the right to change any specification stated herein at any time in the future without notification. | ||
