$ 3,375.00

The 4496-13 is the 4-Channel ADC, 2-Channel DAC configuration of the LavryBlue System.

The LavryBlue System is a modular design which allows the end user to populate the 1U 19" chassis with stereo modules that provide a variety of functions. Each unit may hold up to 4 channels of microphone preamplification, up to 8 channels of analog to digital conversion (ADC) or 8 channels of digital to analog conversion (DAC); or a combination of these functions. Each module has two channels and fills either 1 or 2 of the 4 available module slots in the chassis. Basic systems can be ordered with a minimum of one stereo module, allowing user installation of additional modules at a later date.


  • LavryBlue M-AD 824: a 2-channel ADC module requiring 1 module slot.
  • LavryBlue M-DA 824: a 2-channel DAC module requiring 1 module slot.
  • LavryBlue MicPre Module: a 2-channel microphone preamplification module requiring 2 module slots.

In addition to these modules, any chassis which includes any ADC channels will also include a LavryBlue M-Sync.

This multichannel clock synchronization module features ultra-stable crystal-referenced internal or external sync operation at 44.1, 48, 88.2, and 96 kHz. Wide lock mode is available for non-standard sample rates or vari-speed operation.

One M∙SYNC is required to provide clocking and synchronization for all M∙AD824 AD converter modules contained in the same 4496 chassis; This module also provides Word Clock out to synch other units and allow multiple racks of LavryBlue to function as one system.

  • Ideal for multi-channel systems.
  • Independent operation of the AD and DA converter clocking. Each M∙DA824 stereo DA converter module clocks from the incoming digital audio steam. This allows recording and playback at different sample rates with devices that are not synchronized; for example- record to a DAW at 96kHz while playing back a CD from a stand-alone CD player. Multiple M∙DA’s can also operate either independently for playback of unsynchronized sources at different sample rates, or sample-accurately in multi-channel systems.
  • Minimal systems can contain one AD, one DA, or one of each for stereo applications. Another popular configuration is one AD and two DA modules for “looping” a signal out of a DAW and monitoring the re-encoded signal; as in Mastering systems with analog and digital processing.
  • Microphone preamplifiers can be used independently of the converters, or with analog processing inserted between the MicPre and AD input.
  • Digital AES/XLR inputs and outputs are compatible with most SPDIF/RCA I/O using simple adapters or adapter cables.  
  • Field expandability allows the system to grow as your needs change or budget allows.



  • Multichannel clock synchronization
  • Ultra-stable crystal-referenced internal or external sync operation at 44.1, 48, 88.2, and 96 kHz
  • Wide lock mode is available for non-standard sample rates or vari-speed operation
  • One M·SYNC provides clocking and synchronization for all M·AD824 AD converter modules contained in the same 4496 chassis
  • Word Clock out to synch other units


  • 4 channels of sonically transparent 24 bit Lavry A-to-D conversion
  • Option to output digital audio 24 bit, 16 bit, or 16 bit plus dither and αcoustic βit Correction™ noise shaping.
  • Accurate LED metering.
  • Analog and Digital Saturation modes allow hotter recording levels.


  • 2 channels of sonically transparent Lavry D-to-A conversion
  • CrystalLock™ mode option eliminates the effects of source jitter on conversion accuracy.


  • Tracking
  • Location Recording
  • Mixing
  • Overdubs
  • Mastering
  • Broadcast
  • Live/Location Sound
  • Post Production


  • The 4496 Chassis is a standard 1U 19”rack unit.
  • Input Voltage-
    • “Universal” input accepts inputs of 90-264VAC, 47-63Hz, Internally fused 2.5A
  • Current Consumption @120VAC-
    • Steady-state: Typically less than 0.5A (Varies with configuration/number of modules).
    • Steady-state Maximum: 1A
  • Dimensions:
    • 19” wide x 11.5”deep x 1.75” high (Enclosure minus clearance for switches and connectors measures 10.5” deep)
  • Approximate Weight-
    • ~ 9 lbs (Varies with configuration/number of modules).


    • +/- 25 ppm (parts per million)
    • +/- 150 PPM for standard sample rates: 44.1, 48, 88.2, & 96 kHz.
    • 42-50 kHz range in “LOW” 
    • 84-100 kHz range in “HIGH”
    • The unit accepts an input sync signal at the rear panel BNC labeled “SYNC IN.”
    • This can be either a standard: Sample rate WORD CLOCK “5V TTL level” (2.5V-5V amplitude) or an AES SYNC SIGNAL (2.5V-5V amplitude).
    • The input IS NOT internally terminated.
    • The unit provides an output sync signal at the rear panel BNC labeled “SYNC OUT.” The signal is useful for driving another LavryBlue 4496 system (for example a multi-channel application requiring more than 8 channels of A-to-D).  The output clock is a 75-ohm back terminated 3V signal (compatible with the BNC input of the next 4496 chassis and standard WORD CLOCK inputs).


  • Dynamic Range (22Hz – 22KHz unweighted):
    • 110dB referenced to 0dBFS
  • Distortions:
    • 1kHz tone at -1dBFS: .002%FS
    • 1kHz tone at -20dBFS: .0013%FS
    • 1kHz tone at -60dBFS: .0006%FS
  • Sample rates:
    • 96kHz, 88.1kHz, 48kHz, 44.1kHz in CrystalLock™ or Narrow with a
      +/- 100ppm lock range  (+/- 150ppm typical)
      (Front panel lamps indicate sample frequency and “Lock”)
    • 42-100kHz Wide lock mode (varispeed)
  • Crystal lock accuracy    
    • .1ppm / 10 sec maximum
  • Channel separation        
    • -100dBFs at 1KHz
  • Flatness response           
    • +/- .05dB (10Hz -20KHz)
  • Phase linearity                 

    • 2 degrees (10Hz - 22 kHz)

  • Polarity                          

  • Front panel switch selects “Pin 2 +” or “Pin 3 +”

  • Analog Outputs:             

    • Balanced XLR “+4dBu nominal level” (maximum level of 24dBu +/-. 25dB) or Unbalanced (Maximum level of 18dBu +/-. 25dB).  

    • Balanced /Unbalanced settings are configurable for Pin 2 or Pin 3 “Hot” operation via user-selectable jumpers. Individual analog output front panel level control adjustments (20 turn potentiometers for each channel) provide 0 to +24dBu range for balanced outputs, and –6dBu to +18dBu for unbalanced operation for a digital signal of “0dBFS” (full scale digital level).

  • Digital Input                       

    • AES/EBU Balanced XLR, 110 Ohm, transformer isolated. Compatible with coaxial SPDIF using appropriate adapter.


  • Dynamic Range (22Hz – 22KHz unweighted):
    • -114dBFS  +/- 1dBFS
  • THD+N (1KHz unweighted), Internal clock or NARROW lock, typical and worst case:
    • -1dBFS                  -98dBFS typical.                 -96dBFS worst case.
    • -3dBFS                  -102dBFS typical,              -98dBFS worst case.
    • -10dBFS                -109dBFS typical,              -107dBFS worst case.
    • -20dBFS                -112dBFS typical,              -110dBFS worst case.
  • Common mode rejection:
    • Greater then 100dBFS for AC power line frequencies (measured by applying 24dBu 100Hz common mode input signal, with no internal gain)
  • Analog input levels (balanced or unbalanced source):
    • 24dBu peak level with no internal gain (front panel pots counter clockwise)
    • 13dBu peak level with maximum internal gain (front panel pots clockwise)
  • Analog input Gain:
    • 11dB’s available internal gain. Gain increases when turning Front Panel pots clockwise.
  • Analog inputs:
    • Female XLR Electronically balanced +4dBu nominal level, Input impedance 5k Ohms,
      configured for XLR Pin 2 “+” factory default (user selectable by internal DIP switch).
  • Digital Output:
    • Male XLR AES Digital interface- transformer coupled, SPDIF compatible with appropriate adapters.
  • Output Word length:
    • 24, 20 or 16 bits selectable from the front panel.
  • Bar Graph display:
    • 21 lamps indication (color coded) for each channel, including MAX lamp (for digital overload), 0 to –10dBFS in 1 dB increments, -12 to –20dBFS in 2dB increments, followed by –25,  -30, -40 and –50dBFS to indicate low level activity.
  • Reference Meter Mode:
    • Enables selection of reference points (indication lamps) on the bar graph display, to –10, -12, -14, -16,  -18 or –20dBFS levels. The magnified input signal is indicated in reference to the selected reference level in 0.2 dB steps.
  • Dither:
    • Enables distortion and noise floor modulation free truncation to 20 or 16 bits word length.
  • Acoustic Bit Correction™ (αβC™):
    • Dither plus psychoacoustic enhancement of the converter dynamic range for truncation to 20 or 16 bits.
    • αβC-1 provides a gentler enhancement curve. αβC-2 provides an aggressive enhancement curve.
      Note: αβC-1 and αβC-2 may be replaced by less aggressive curves using the internal DIP switch.




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