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 CPR12 is an easy to use, flexible and multifunctional 10 channel pre-amplifier. Six of these input channels are selectable between Mic / Line level and equipped with a 3 band tone control. The first two can be switched to priority and phantom power. The other four channels are direct line inputs.

Every input channel has its own gain and fader volume control with PFL button which makes it possible to pre-listen each input or output channel with the built-in pre-listening speaker, and can be routed to one or both output channels. This makes the CPR12 a full two-zone system.

Other present features are a priority input, a recording output, separate sub-out channels and the 24 V DC emergency power connection. This last feature makes it possible to power the CPR12 with emergency power when the main power is shut down. In this case, the priority input will automatically mute all input signals, and a evacuation message will be announced. The steel 19" housing has a height of 2 HE.

• 10 audio input sources
• 6 Mic / Line inputs with 3 band EQ
• 4 Direct Line Inputs
• Fader volume control
• Two output zones
• Built-in pre-listening speaker
• Priority input for emergency situations
• + 15 V DC Phantom power
• Works on 24 V DC emergency power
  

• Model Name / Type: CPR12 / 10 channel 2 zone pre-amplifier
• THD+N:
• Signal/Noise: > 90 dB
• Frequency Response: 20 Hz - 20 kHz
• Phantom Power: + 15 V DC
• Emergency Power: + 24 V DC
  
• Power Supply: 100 - 240 V AC / 50 - 60 Hz
• Dimensions (W x H x D): 420 x 88 x 320 mm

The AD2022 is Avalon's fourth generation of fully discrete, symmetrical Pure
Class A microphone preamplifiers. The dual mono AD2022 includes the original
sonic capabilities and transparency of the M2, M22 and M5 preamplifiers plus
several additional features, including selectable microphone source loading for
optimized cable/mic matching, improved high-voltage Class A regulated power
supplies, two high Z instrument inputs, variable-passive high pass filter, teflon/
silver wiring and doubled plated circuit boards for superior low level signal transfer.
 
AD2022 FEATURES
Symmetrical Pure Class A design, two channels
Microphone and hi-Z instrument inputs
Gain switched 4dB steps plus +/- 3dB fine output trim 
Selectable microphone input impedance matching 
Low noise -126dB EIN
Ultra high quality, low-ratio, balanced input transformer
Balanced, high-current Class A output to +36dB
Large illuminated analog VU meters and twin peak LED's
Regulated phantom power supply +48v 
Input polarity phase reverse 
High headroom +36dB input before overload
Input -20dB pad for high level signals
Sealed silver relays for all signal routing
External AC 150w toroidal power chassis
Fully discrete Class A regulated audio power supplies
Deep, musical sound-stage, transparent amplification

MICROPHONE INPUT
The AD2022 incorporates the most advanced high-performance microphone
transformer available. Split low-ratio primary windings are carefully combined
within a custom mu-metal core for extended smooth frequency response and
very low distortion.  Sealer silver relays are used for minimal signal invasion. 
The input signal selector, high pass filter, polarity-phase reverse, +48v power
and the 20dB input attenuator all utilize local sealed relay operation. A variable
passive high pass filter provides a minimum phase shift design while eliminating
low frequency rumble, wind noise and mechanical vibration at sub sonic frequencies.

SYMMETRICAL PURE CLASS A DESIGN
Two 100% discrete, high-voltage, symmetrical Pure Class A signal amplifiers
are utilized per channel. The first operates in a cascaded-cascode FET
configuration while the second stage amplifier is fully bipolar. The twin amplifiers
share the total available gain requirement. This shared architecture increases
the high level headroom capability, improves transient response and doubles the
internal bandwidth of the ultra-high performance pure Class A signal amplifiers.
OUTPUT and METERING
High-current DC coupled, Class A discrete amplifiers are utilized for the output
drive interface with +36dB capability into all known loads.  Two large, high-quality
analog VU meters indicate accurate signal readings while bi-color LED's offers
peak indication at 0dB and +20dB.

AD2022 PREAMPLIFIER SPECIFICATIONS
 
Circuit Topology:  Twin cascode FET and bipolar low level signal amplifiers,
high-voltage, 100% discrete, symmetrical Pure Class A 
Input Type and Load:  Transformer balanced low-ratio, 50, 150, 600 and 1k5
ohm input load selection  
Maximum Mic Level:  +36dB balanced XLR pin 2 hot (with -20dB passive
attenuator) 
Maximum Instrument Level  +18dB at 100k ohms instrument input level,
standard mono 1/4 inch jack 
Input Attenuator:  -20dB resistive pre transformer primary, sealed silver relay 
Phantom Power:  +48v regulated 50mA capability, sealed silver relay 
High Pass Filter:  Passive, variable from 30Hz to 185Hz @ 6dB per octave,
sealed silver relay. 
Polarity Reverse:  Sealed silver relay on microphone input 
Gain Range Input:  +20dB to +64dB in 4dB steps 
Gain  Output Range:  +/- 3dB variable conductive plastic potentiometer 
Maximum Output Level:  +36dB balanced 600 ohms, DC coupled, discrete
symmetrical Pure Class A 
Output Type:  XLR connector, pin 2 hot 
Noise EIN Unweighted:  -126dB 150 ohm 
Noise 20kHz Unweighted:  -102dB 
Distortion THD, IMD:  0.05% nominal 
Frequency Response -3dB:  1Hz to 120kHz transformer limit 
System Bandwidth:  DC to 1MHz 
Output Meter:  High quality, illuminated analog VU meter 0dB = +4dB. 
Peak Meter:  Bi-color LED's 0dB and +20dB peak detection circuit. 
AC power supply B2T:  External toroidal 100V to 240V, 50-60Hz selectable,
150 watts maximum. 
Cables:  90V ac, 4 pin male power input connector, B2T required, internal
DC regulation  
Dimensions:  19 x 12 x 3.5 in (482 x 305 x 89mm) 
Weight:  15lbs (6.8kg) 
Dimensions - Shipping Carton:  24 x 21.5 x 7.5 in (610 x 546 x 190mm)  
Weight - Packed:  25lbs (11.4kg) 

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.

PreSonusʼ popular Class A XMAX preamps are widely lauded for their clarity and transparency. Our tube preamps are beloved for their warm, smooth sound. With the Blue Tube DP V2 dual-path mic/instrument preamp, you get both types of high-quality sound in one unit.

Now weʼve improved on the classic unit with the BlueTube DP V2. The solid-state path now feeds PreSonusʼ top-of-the-line Class A XMAX™ mic preamplifier with 80 dB of variable gain—an upgrade from the original BlueTube DPʼs solid-state stage.

You still get all the secondary features you expect in a professional-grade preamp: 48V phantom power, an 80 Hz high-pass filter, -20 dB pad to control hot input signals, and a polarity-reverse switch. Each channel has an illuminated VU meter so you can visually monitor your input levels.

A Tube Drive control provides a wide range of sounds: when itʼs clicked off, youʼre using the solid-state preamp for quiet, transparent amplification; when itʼs engaged, your signals flow through the tube preamp, and you can achieve anything from gentle warmth to edgy distortion.

    2 input channels, each with:
        High-headroom Class A XMAX™ mic preamplifier with 80 dB gain range
        12AX7 vacuum tube gain stage
        Tube Drive tube-saturation control
        48V phantom power
        80 Hz high-pass filter
        -20 dB pad to reduce hot input levels
        Polarity-reverse switch
        Illuminated analog VU input-level meter

    Input/Output
        2 balanced combo mic/unbalanced instrument inputs
        2 balanced XLR main (L/R) line outputs
        2 unbalanced ¼” main (L/R) line outputs

    Physical
        Compact 1/2U chassis
        External 12 VDC, 1A power supply