Grace Design M201A/D

A/D Option Module for M201 preamp (not included)

OUR PART #: M201A/D Write the First Review.

Note: Please call for information on the installation of this module first before purchasing.
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Note: Please call for information on the installation of this module first before purchasing!

The m201 can be equipped with an optional ultra low-latency 24bit/192kHz A/D converter module. The A/D module is available on new m201 preamplifiers from the factory or as a factory upgrade to existing units.

With this module installed, the microphone preamplifier section or the M+S matrix can be routed to the A/D converter input directly for standard recording applications. Or, with the additional analog line inputs on the A/D converter module, the mic preamplifier and A/D converter sections can be used separately, which allows for external processing to be inserted between the mic amp and the A/D converter.

With the growing popularity of passive summing networks for 'out of the box' mixing, the m201 with AD converter makes a perfect transparent make up gain amplifier with the option to insert your favorite analog EQ or compressor in the path before the A/D converter. Or, simply use the A/D converter standalone for mixing, transferring, or recording from whatever source you choose.

External synchronization to word clock or Digidesign LoopSync is available, and features Grace's proprietary dual stage PPL with s-Lock for extremely low jitter and rock solid digital stability without the use of sample rate conversion.

The m201 A/D converter module also features two independent A/D sensitivity configurations. From the front panel interface, the user can easily switch between two calibrated settings (A) and (B), each of which can be configured to one of four provided standard A/D sensitivities.

The m201 mic preamplifier is the ultimate high fidelity 2 channel mic preamplifier. With the new A/D converter module, it becomes a powerful, flexible recording tool for any audio production environment.


  • Low latency A/D converter capable of up to 24bit/192kHz operation
  • Selectable input source: mic pre channels 1&2, MS matrix L-R output, and external balanced line input.
  • Four output connectors: 2x AES3 on XLR, AES3-id/S/PDIF on BNC, and TOSLINK optical.
  • External synchronization to word clock or DigidesignTM LoopSync
  • Dual stage PLL clock recovery: Wide range low noise VCO based PLL followed by Grace Design's crystal based s-Lock ultra low jitter PLL.
  • Two input sensitivities selectable on the front panel, each is independently calibrated.
  • 20 segment peak reading LED meters show 60dB range.
  • AES3 outputs can be configured for single or dual wire operation.
  • Four standard sensitivities are supported: +18dBu = 0dBFS (14dB Headroom), +20dBu = 0dBFS (16dB Headroom), +22dBu = 0dBFS (18dB Headroom), +24dBu = 0dBFS (20dB Headroom).

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