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4.00 LBS
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The Moon 100D Delivers Amazing Sound from a Small Package

Simaudio engineers excel at bringing music lovers products that outperform the competition at reasonable price points. And this is certainly true for the Moon 100D digital-to-analog converter. What makes the 100D so special? Well, it could be many things. The new Burr Brown 24bit/192k DAC chipsets, its highly accurate digital clock, or its asynchronous sample-rate converter and 8x oversampling digital filters. It could be huge copper circuit board traces or the advanced analog output stage. Maybe it’s the heavy-duty, vibration-damped chassis. This DAC operates at 24bit/1.411 MHz, much higher than any other DAC at this price. It accepts digital inputs from coaxial, TosLink, and USB inputs, and outputs music. Pure and simple.

· Power supply with 3 stages of DC voltage regulation
· Fully asynchronous sample rate converter
· BurrBrown PCM1793 high-resolution 24-bit/192-kHz D/A and 8X oversampling
  digital filter
· Accurate digital clocking system for exceptionally low intrinsic jitter levels
· Advanced analog signal path using a DC servo circuit and proprietary analog filter
· Pure copper circuit board tracings with extremely low impedance characteristics
· Extremely rigid chassis construction to minimize the effects of external vibrations
· Accurate matching of high quality components in a symmetrical circuit design
· Designed to be powered up at all times for optimal performance.

An important note about the 100D's USB input
The USB input on the MOON 100D 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 100D.

Rather than including a USB input for sampling rates exceeding 48kHz, Simaudio opted to provide the best possible power supply, D/A converter and analog stage in the MOON 100D at this price level. 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 costly dedicated circuitry, but this would significantly drive up the price of the 100D without improving the sonic performance on any of the other inputs.

If you intend to use the MOON 100D’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 100D. 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.


Type: Solid State
Front Panel Controls: Standby / Input Selector
LED Indicators: Locked Sampling Frequency / Input
Digital Input Types:
  S/PDIF (RCA) x 1
  USB x 1
  TosLink x 1
Digital Input Impedance: S/PDIF 75 Ω @ 0.5 Volts
DAC / Digital Filte:r BurrBrown PCM1793
Bit-depth range - S/PDIF, Toslink: 16 - 24 bits
Bit-depth range - USB: 16 bits
Sampling Frequency Rate range - S/PDIF, Toslink: 44.1, 48, 88.2, 96, 176.4 and 192kHz
Sampling Frequency Rate range - USB: 32 - 48kHz
Frequency Response (audible): 20Hz - 20kHz +0/-0.2dB
Frequency Response (full range): 2Hz - 72kHz +0/-3dB
THD @ 1kHz, 0dBFS (A-weighted): < 0.003 %
IMD: < 0.0005 %
Dynamic Range: > 106dB
Signal-to-noise ratio: > 106dB @ full output
Channel Separation: > 106dB
Low Level Linearity: ±1.0dB to below 120dBFS
Intrinsic Jitter: < 25 picoseconds RMS
Single-ended Analog Output (RCA): 1 pair
Max. Analog Output @ 0dBFS – Standard: 2.0 Volts RMS
Output Impedance: 100 Ω
Available Faceplate Finishes: Black and Silver
Power Consumption: 3 Watts
AC Power Requirements: 120V / 60Hz 240V / 50Hz
Shipping weight: 4 lbs
Dimensions (W x H x D): 5.0 x 2.9 x 6.5 in.





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