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MOON EVOLUTION SERIES                                 Updated: May 12, 2010  
750D DAC / CD Transport

 
 
 

 
  Revolutionary Technology ...
 
 The world's first true 32-bit asynchronous DAC
 

The MOON 750D Digital-to-Analog Converter / CD Transport features the most advanced digital technology; The first true 32-bit fully asynchronous digital audio playback system to reach the marketplace. Intended to fulfill the demands of the most discerning music connoisseur, the 750D is a fully balanced design featuring our new M-AJiC32 circuitry (an asynchronous jitter elimination system) built around the ESS SABRE32 Reference Audio DAC. The conversion process uses 8 DAC’s per channel working in 32-bit Hyperstream™. The final result is previously unattainable musical reproduction from digital media, be it a CD, computer, music server, etc. In addition, the MOON 750D is extremely flexible and exemplifies a luxurious lifestyle.

The back panel features a complete array of digital input (4) and output (2) connections to meet all the needs of today’s ever-widening technologies. The front panel includes a disc drawer for our own proprietary drive mechanism which represents a fifth input. As well, in the coming months, an optional outboard power supply will be made available to further enhance the already astonishing performance of the 750D.
 

The most realistic and lifelike sound reproduction yet.

Of course, all of the signature features you’d expect in a MOON digital product are present: our revolutionary M-Quattro floating suspension, SimLink, i2DCF, just to name a few, as well as both RS-232 and IR ports for custom-install environments. Finally, a plethora of user selectable cosmetic options are available at the time of purchase.

 

 


  Significant Design Features:

· The world's first true 32-bit asynchronous Digital-to-Analog converter
· ESS Technology SABRE32 Reference DAC / Digital Filter (ES9018S) working in 32-bit
  Hyperstream™ to achieve unprecedented jitter immunity and low-level linearity via
  a patented Time Domain Jitter Eliminator
· Digital Audio Signal Processing using M-AJiC32 (MOON Asynchronous Jitter Control
  in 32-bit mode)
· Four (4) digital inputs (AES/EBU, S/PDIF, TosLink and USB) allowing for a connection
  to virtually any digital source
· Proprietary CD drive system mounted on our M-Quattro gel-based 4-point floating
  suspension for vibration damping, allowing ambient & spatial cues in your recordings
  to come to life like never before - The fifth digital input
· RS-232 port for (i) full unsolicited bidirectional feedback and (ii) firmware updates
· IR input for external control
· Two (2) digital outputs – AES/EBU and S/PDIF
· Fully balanced differential digital and analog circuitry in a dual-mono design
· Separate digital & analog power supplies using 2 independant toroidal transformers
· SimLink controller port allows for 2-way communications between other compatible
  MOON Evolution Series components
· Power supply voltage regulation includes i2DCf (Independant Inductive DC Filtering);
  There is one inductor dedicated to each integrated circuit type component (DAC,
  Op-Amp, etc.) in the audio circuit’s signal path - 24 stages in all
· A virtually jitter-free - 1 picosecond - digital clocking system
· A very short capacitor-free signal path using a DC servo circuit and proprietary
  12dB/octave analog filter
· Four-layer PCB tracings for a dramatically improved signal-to-noise ratio
· Ultra rigid chassis construction to minimize the effects of external vibrations
· Accurate matching of the very finest quality electronic components in a symmetrical
  circuit design
· Designed to be powered up at all times for optimal performance.

  

 


   




To view a larger image of the MOON 750D DAC's internal circuitry, simply point-and-click your mouse over the image located to the left.

  


 

To view a larger image of the MOON 750D DAC's rear panel, simply point-and-click your mouse over the image located to the right.

    

 

 
  An important note about the USB input


The USB input on the MOON 750D accepts a digital audio signal of up to 16-bits/48kHz. This is the native specification of the USB input. However, if you require a higher sampling rate, there are ways to achieve this with the 750D.

Rather than including a USB input for sampling rates exceeeding 48kHz, we opted to provide the best possible power supply, D/A converter and analog stage in the MOON 750D at this price level. Also, keep in mind that USB wasn’t originally intended for use with hi-resolution audio; there are latency issues which compromise sound quality (i.e. jitter and phase errors, etc.). These could be minimized through dedicated costly circuitry, but this would significantly drive up the cost of the 750D without improving the sonic performance on any of the other inputs.

If you intend to use the MOON 750D’s USB input, it’s very likely that your computer is a data source for music. Today most computers with a built-in sound card will have either an S/PDIF (RCA connector) or Toslink (optical connector) digital audio output, thus eliminating the need for a USB input on the 750D. Furthermore, if you’re committed to getting the most out of the music stored on your computer, then in all likelihood you have installed an after-market soundcard in your computer. Virtually all of these soundcards have at least one S/PDIF, Optical or AES/EBU (XLR connector) digital output. At this point, USB connectivity becomes irrelevant. The USB input is there for convenience as opposed to performance.

In the event that you wish to use your computer’s USB connection with files greater than 48kHz, there are several relatively inexpensive after-market products; compact one-box USB-to-S/PDIF interfaces that will work with USB datastreams up to 24-bit, all the way up to 192kHz.