Massdrop x Grace Design m9XX DAC/Amp
Massdrop x Grace Design m9XX DAC/Amp
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Product Description
Well reviewed on Head-Fi, HiFi Insider, and beyond, the Massdrop x Grace Design m9XX was inspired by the world-class m920 DAC/amp—offering the same performance level for audiophile applications, now at a far more accessible price. Working with Michael and Eben from Grace Design, we stripped the m920 of its lesser-used pro audio hardware and improved upon the audiophile features where possible, all while retaining the high-res DAC implementation and super-clean solid-state amplification Read More
Specs

Headphone Output Power - Low Power Mode (2 channels driven)

  • 22 mW @ 4 Ω
  • 45 mW @ 8 Ω
  • 90 mW @ 16 Ω
  • 100 mW @ 20 Ω
  • 175 mW @ 32 Ω
  • 280 mW @ 50 Ω
  • 83 mW @ 300 Ω
  • 40 mW @ 600 Ω

Headphone Output Power - High Power Mode (2 channels driven)

  • 240 mW @ 4 Ω
  • 490 mW @ 8 Ω
  • 940 mW @ 16 Ω
  • 1030 mW @ 20 Ω
  • 950 mW @ 32 Ω
  • 650 mW @ 50 Ω
  • 115 mW @ 300 Ω
  • 57 mW @ 600 Ω

Impedances             

  • Headphone output: 0.08 Ω 
  • Line output: 47.5 Ω

THD+N at Maximum Volume

  • 1kHz, 22H–22kHz BW          
  • 0dBFS in, +14dBV out: k<0.002%

Intermodulation Distortion

  • SMTPE/DIN 4:1 50Hz, 7kHz                    
  • @1.0V out, no load: <0.008%      
  • @1.0V out, 32-ohm load: <0.009%

Frequency Response

  • +/-3dB          
  • Fs=96kHz: 0.5-45.9kHz

Dynamic Range               

  • 20Hz–22kHz bandwidth: 112dB
  • 20Hz–22kHz bandwidth and A weighting filter: 115dB

Output Noise          

  • 20Hz–22kHz, volume = 0-90: -106dBV      
  • A-weighting filter, volume = 0-90: -109dBV      
  • 20Hz–22kHz, volume = 90.5-99.5: -96dBV        
  • A-weighting filter, volume = 90.5-99.5: -98dBV

Crosstalk           

  • 100Hz: <107dB        
  • 1kHz: <98dB
  • 20kHz: <72dB

Attenuation Range

  • 0 to -99dB, 0.5dB steps

Channel Tracking Accuracy

  • +/-0.05dB

Maximum Output Level

  • +14dBV (5.1V)

THD+N         

  • 1kHz, -1dBFS, (0dBFS = +20dBu), 20Hz–22kHz bandwidth: 0.0006%                   

Dynamic Range                 

  • 20Hz–22kHz bandwidth, 0dBFS = +20dBu (AES17 filter): 117dB
  • 20Hz–22kHz bandwidth, 0dBFS = +20dBu (A-weighted): 119dB

Input Lock Range                

  • TOSLINK:     
  • 44.1kHz +/- 400Hz
  • 48kHz +/- 700Hz
  • 88.2kHz +/- 1200Hz
  • 96kHz +/- 1300Hz   
  • USB:
  • 44.1, 48, 88.2, 96, 176.4, 192, 352, 384 kHz
  • DSD64, DSD128

Power Consumption

  • Max, high-power mode: 8.0W
  • Max, low-power mode: 2.5W     

Dimensions

  • 4 x 5.25 x 1.8 in (10.2 x 13.3 x 2.6 cm)   

Owner Manual Download

Included
  • Printed owner manual
  • 6 ft (1.8 m) USB Cable (gold-plated connectors, ferrite bead)
  • 10 ft (3 m) USB Cable (gold-plated connectors, ferrite bead)
  • USB power adapter (110V or 220V, choose at checkout)
Shipping

All orders will be shipped by Drop.

Estimated ship date is Aug 24, 2018 PT.

After this product run ends, payment will be collected and orders will be submitted to the vendor up front, making all orders final. Check the discussion for updates on your order.