PRESONUS DIGIMAX 96k 8CH. MIC PREAMP.w-LIMITER and MULTIPLE DIGI

Now with 96k sampling rate*, the DigiMAX is the newest member in the award winning
family of Presonus mic preamp's. Combine eight channels of pristine mic preamplification
with 24 simultaneous digital and analog outputs, and the DigiMAX 96k seamlessly fits
into any digital recording situation. The DigiMAX 96k is the perfect front-end for DAW's as
well as adding mic pre's to digital mixers and sound cards.
A MIC PRE WITH HERITAGE
We started with the same design as the MP20, M80 and VXP: Class A Discrete Input Buffers
followed by a dual-servo gain stage giving you 60db of preamp gain with 52db of headroom. The
DigiMAX 96k is electronically balanced and features phase reverse on the first two channels, as
well as a 20dB pad and selectable 48v phantom power on each channel. A unique feature is EQ
Enhance? which contours the EQ curve -4dB centered at 1k from 250Hz to 5kHz. This is especially
helpful on drum overheads and other sources to bring out definition and notch out problem frequencies.
THE COMPRESSOR TRAPPED IN THE BODY OF A LIMITER
What makes a limiter musical? Typically, most limiters use peak detection which actually clips the
signal and can produce nasty artifacts. RMS detection, though commonly used with most compressors,
has the drawback of not being fast enough to catch extremely fast transients. The DigiMAX 96k uses
both RMS and Peak detection to give you the best of both worlds. The DigiMAX 96k uses an RMS style
compressor with a high ratio while the peak portion is used only to protect the input of the A/D converter
from clipping. The end result? Fast, musical, natural and able to catch anything you throw at it.
CONNECTIVITY FOR DAYS
The DigiMAX 96k features more I/O options than any mic pre on the planet! 8 XLR Mic Inputs + 2 1/4"
Instrument Inputs. The outputs consist of 8 balanced TRS analog outputs plus a 24 bit ADAT? lightpipe
output AND (4) stereo RCA SPDIF Digital Ouputs (Unit ships in AES/EBU mode, breakout cable not included).
And here's the best part... They all work simultaneously! The Ultimate Live Recording Preamp! Use the
ADAT? Lightpipe Outputs to feed your recorders digital inputs while you send an identical signal to a FOH
Console via the TRS Analog Outputs. Bye, bye latency! Use the TRS analog outputs to monitor tracks while
you send the Lightpipe to your soundcard or standalone computer interfaces like MOTU 2408 and Digi001.
Mixer Beefer-Upper! Add high gain/low noise quality micpre's to your digital console using either Lightpipe,
AES/EBU, SPDIF, or analog TRS outputs.

* Over AES/EBU or S/PDIF digital output cables ONLY.
 
 Features 
? 44.1, 48, 88.2 and 96kHz Sample Rates
? Ultra-Wide Dynamic Range
? Low-Noise Operating Levels
? Dual-Domain Limiter on Every Channel
? EQ Enhance on Every Channel
? -20dB Pad on Every Channel
? 48V Phantom Power on Every Channel
? Instrument Input on Channels One and Two
? Phase Reverse on Channels One and Two
? Eight 24-bit ADC Converters
? ADAT? Lightpipe Output
? S/PDIF Outputs
? AES/EBU Outputs
? 1/4? TRS Balanced Analog Outputs
? BNC Word Clock I/O for Sync

Technical Specifications:
Input
Number of Channels Eight
Input Impedance, XLR Input 1.3k Ohms
Input Impedance, 1/4" Instrument Input 1M Ohms
Connectors
Eight XLR, Two 1/4" Instrument Inputs on Channel One and Two
Panel Controls
Gain 0dB to +40dB
Limiter 0dB to Off
Phase Reverse (Channel One and Two Only) On/Off
EQ Enhance Button On/Off
Meters
Signal Present LED -20dBu
Clip LED +22dBu
Limit LED Limiter Active
Output
1/4" TRS Impedance Balanced 51 Ohms
ADAT? LightPipe Digital Optical 24-bit
AES/EBU (4 Pair, Stereo) 24-bit
S/PDIF (4 Pair, Stereo) 24-bit
Digital
Sampling Rates 44.1, 48, 88.2 and 96kHz
Performance
THD + Noise (Unweighted) 0.009%
Noise Floor -94dBu
Signal to Noise >98dB
Analog Dynamic Range >120dB
Power Supply Rejection >98dB
Amplifier Type Dual Servo
Power Supply
Type Linear, External
Power 80 Watts
Input 100/120/220/240V AC (Factory Configured)
Physical
Size 1U Rack
Dimensions 19" W x 1.75" H x 7" D
Weight 15 lbs./ 6.8 kg
Chassis Steel
Panel Aluminum

The PRE-73 MKIII is a one-channel vintage style microphone-, line- and instrument preamplifier. The signal path uses only discrete components like resistors, capacitors and transistors. The in- and output is transformer balanced, using two different transformers, each one optimized for its purpose. This is the way audio components were built before integrated circuits became available.

The circuit used in the PRE-73 MKIII is similar to the preamp section in the classical 1073 module with a corresponding sound character that is warm, punchy, sweet and musical. These classic characteristics have been heard on countless recordings through the years and it is a versatile sound that works very well on most sound sources and in most genres.
The essence of this sound is now available at a surprisingly low cost, making it available to nearly everyone.

Features  :

• Vintage Style electronics. No intergrated circuits in the signal path.

• Maximum gain in MIC mode is 80 dB, enough to handle passive ribbon mics with quiet sound sources.

• GAIN switch range 20 - 80 dB. GAIN/LINE mode switch, gain is reduced by 30 dB in LINE mode.

• Selectable two position high frequency AIR boost eq, 3 or 6 dB @ 30 kHz.

• Selectable 6 dB/octave two frequency high pass filter at around 40 (HP1) and 170 Hz (HP2).

• Tantalum capacitors in the signal path.

• Switchable impedance in MIC mode, 1200 or 300 Ohms, will change the tone of most mics. The input impedance in LINE mode is 10 kohm.

• Switchable phantom power and absolute phase.

• A high-impedance instrument input for any sound module, electric guitar or bass.

• A simple but effective 4-step LED output level meter.

• The output level control makes it possible to make fine gain adjustments and also to overload the main gain stage(s) for more character and then lower the signal to a suitable level before the output stage.

• Combo XLR/TRS input jack and separate output XLR and TRS jacks for flexible connections.

• Insert jack for inserting EQ´s and other units.

• Selectable 600 ohm output termination.

• The pcb is prepared for the Carnhill input transformer.

• External power supply to avoid interaction with the audio circuits and transformers.

• A solid build quality that will last many years of normal use.

The MKIII has the following new features compared to the MKII:

• Tantalum capacitors in the signal path.

• Selectable two position high frequency AIR boost eq, 3 or 6 dB @ 30 kHz.

• Selectable two frequency high pass filter, 6 dB/octave at 40 or 170Hz.

• The pcb is prepared for the Carnhill input transformer.

• Revised and less complicated GAIN switch with a separate switch for MIC/LINE selection.

• All GAIN settings can also be used in LINE mode .

Having had great success with the PRE-73 preamp, we have received many requests for a version for the 500 eries rack format. We are therefore happy to present the PRE-573, expected to start shipping in late September.
 
The PRE-573 is a one width module that has the sound and the features that made the PRE-73 so successful and a few additional ones.
The circuit still uses the preamp and output section from the classic 1073-module, adapted to work in the api rack format. It has a total  gain range from -15 to +80 dB. The 10 - 70 dB range is handled by a turn switch  and there is a separate toggle switch to select an additional 5 or 10 dB gain. The input can be configured to accept line level signals by another switch, the gain is then lowered by about 25 dB and the input impedance increased to about 15 kohm.
 
The input impedance of the mic input mode can be switched between 1200 and 300 ohm. Phantom power and phase reverse is also selectable by front panel switches.
 
An added feature, using the same circuit as in the PRE-73 DLX, is the active DI-input with a high input impedance of about 1,5 Mohm. The output signal from the active DI circuit passes through the input transformer for some extra character.
The DI-input is very flexible since it can be changed to a purely passive one by a front panel switch. The DI input is then exactly the same as in the PRE-73 Mk2 where the signal is feed directly into the second gain stage, bypassing the transformer and with an input impedance of about 100 kohm.

These two DI-options makes it possible to get different tones from electric instruments and the passive DI input mode is more suited for injecting active units like sound modules. 
 
A new feature is the switchable AIR mode that  adds a small boost above 10 kHz that peaks at 2 dB at about 35 kHz.

A simple but effective signal and overload indicator is offered by a single LED that starts glowing red at about +4 dBu and then increases its intensity up to the maximum output level.
 
The PRE-573 has a dedicated insert connector at the back allowing it to interface with other GAP 500 modules. The insert can be activated by removing a jumper connector at the back of the module.
The second Golden Age Project module for the api 500 rack will be the EQ-573, expected to ship in November 2012. The EQ-573 consists of the inductor based high pass filter section  and the 3-band eq section from the classic 1073 module with some added frequencies. These two modules together will offer a fully fledged 1073-module in a compact format at a very low cost.
 
There is a second jumper at the back of the module that selects 600 ohm termination on the output. The standard mode is termination on, since it gives the flattest response when the PRE-573 is used with modern line inputs that typically has an input impedance of 10 kohm or more. The user can chose to remove the jumper and deactivate the termination resistor, this will increase the level above 10 kHz and create a peak in the response for an even more pronounced  "Air" effect.
The output is transformer balanced and fully floating and can drive a 600 ohm load up to level of about 28 dBu.

The PRE-73 Mk2 is the first one-channel low-cost preamp on the market that is using a fully discrete signal path with three separate transformers for the balanced mic input, the line input and the output.

The circuit is very similar to the classical preamp section of the Neve 1073 pre/eq module with a corresponding sound character that is warm, punchy, sweet and musical.
This classical sound has been heard on countless recordings through the years and it is a versatile sound that works very well on most sound sources and in most genres.

The PRE-73 Mk2 has a maximum gain of 80 dB on the mic input and the gain range on the Line input is -20 to + 10 dB. There is also a high-impedance instrument input.

The PRE-73 Mk2 is perfect for almost any signal source, no matter if it's a microphone with a high or low sensitivity (like a passive ribbon mic), a syntheziser or sound module or an electric guitar or bass.

The input impedance of the microphone input can be switched between 300 and 1200 ohms, which makes it possible to affect the tone of most microphones. There is also phase switch and an simple 4-step LED signal level meter.

The output level control makes it possible to make fine gain adjustments and also to overload the main gain stage for more character and then lower the signal to a suitable level before the output stage.

The Mk2 update consists of:
- An unbalanced insert jack (nominal level about 18 dBu) added on the back panel for inserting units like the coming GAP EQ-73, a three band eq.
-  LED meter levels adjusted.
- 600 Ohm termination resistor and jumper added to power supply board (accessible from the inside of the unit).
- Revised Gain switch, turning the know clockwise now increase the gain.
- Reduced noise at high gains by a change to the power supply grounding scheme.

The PRE-73 DLX is a one-channel vintage style microphone-, line- and instrument preamplifier. The signal path uses only discrete components like resistors, capacitors and transistors. The line and microphone input and the line output are transformer balanced, using three different transformers, each one optimized for its purpose.
This is the way audio components were built before integrated circuits became available. The subjective sound quality delivered by vintage equipment is often prefered over the one delivered by modern units, a situation that is even more obvious now when music is recorded with clean-sounding digital audio equipment.

The circuit used in the PRE-73 DLX is similar to the preamp section in the classical 1073 module with a corresponding sound character that is warm, punchy, sweet and musical. These classic characteristics have been heard on countless recordings through the years and it is a versatile sound that works very well on most sound sources and in most genres. The essence of this sound is now available at a surprisingly low cost, making it available to nearly everyone.

FEATURES

- Vintage Style electronics. No intergrated circuits in the signal path.
- Maximum gain on the mic input is 80 dB, enough to handle passive ribbon mics with quiet sound sources.
- Gain range on the Line input: -20 to + 10 dB.
- Switchable impedance on the mic input, 1200 or 300 Ohms, will change the tone of most mics.
- Switchable phantom power and absolute phase.
- A high-impedance instrument input for any sound module, electric guitar or bass.
- A simple but effective 4-step LED output level meter.
- The output level controls makes it possible to make fine gain adjustments and also to overload the main gain stage(s) for more character and then lower the signal to a suitable level before the output stage.
- Combo XLR/TRS input jacks and separate output XLR and TRS jacks for flexible connections.
- Insert jack for inserting EQ´s and other units.
- External high power power supply to avoid interaction with the audio circuits and transformers.
- A solid build quality that will last many years of normal use.

The PRE-73 DLX has a number of improvement and new features compared to the PRE-73 MKII:
- Tantalum capacitors in the signal path.
- Selectable 1073-style high pass filter, 50Hz, 80Hz, 160Hz and 300Hz.
- Output Attenuator -7, -14, -21 and -28 dB (located after the output transformer) allows overdriving the output stage and the output transformer for added character by lowering the output signal to a suitable level.
- The circuit board is prepared for Carnhill Mic and Line transformer and high pass inductor.
- The Insert jack can be switched in/out from the front panel. An internal jumper can select that the Insert jack always has an output signal.
- Switchable 600 ohm Output Termination and Ground Lift on the back panel.
- Selectable Active or Passive DI input and selectable input impedance in active mode, Hi Z or 100 kohm, by internal jumpers.
- The DI can signal can be selected to pass or bypass the mic input transformer by internal jumpers.
- Relays are used to control internal switching for DI input, Phantom power, Mic Low Z, Insert and Phase for shorter circuit board signal paths. The relays are controlled by front panel switches.
- Revised gain switch for added headroom.
- Circuit board star grounding scheme.
- Revised power supply with separate regulators for the audio circuits and relay and LED circuits.