Drop O2 + SDAC DAC/AMP Grace Design Amplifier MDX-34346-1

DAC Section

• Massdrop x Grace Design
• DAC chip: AKM AK4452
• Audio formats: Up to 24 bit/96 kHz
• Frequency response, 20Hz–20 kHz: +/-0.02 dB
• THD+N at 20 Hz -0.15 dBFS: 0.0013%
• THD+N at 100 Hz, -0.15 dBFS: 0.0013%
• THD+N at 10 kHz, -0.15 dBFS: 0.0024%
• IMD CCIF, -6.03 dBFS, 19/20kHz, 24/96k: 0.0005%
• IMD SMPTE -6 dBFS, 24/96k: 0.0015%
• Noise, A-weighted:  -105 dBu
• Dynamic range, A-weighted: >114 dB
• Linearity, -90 dBFS: -0.07 dB
• Crosstalk at 1 kHz, -10 dBFS (3.5mm jack): -102 dB
• Sum of jitter components at 11,025 Hz, -1 dBFS: -133 dB
• Maximum output:  2.15VRMS
• USB controller: XMOS XU208-128-TQ64
• Inputs: USB micro
• Output: RCA
• Power: USB Class 1 (no drivers required for Windows, Mac, or Linux)

Amp Section

• Input: RCA, SDAC (when powered)
• Output: 6.35 mm
• Power: AC adapter included
• Gain: 1.0x and 3.3x
• Frequency response: +/-0.1 dB (20 Hz–20 kHz)
• THD (1 kHz, 150 ohms): 0.0016%
• IMD CCIF (15 ohms): 0.001%
• IMD SMPTE: 0.002%
• Noise (ref 400 mV): -105 dB
• Max output (33 ohms): 613 mW
• Max output (150 ohms): 355 mW
• Max output (600 ohms): 88 mW
• Output impedance: 0.54 ohms
• Crosstalk (15 ohms): -65 dB
• Channel balance (50% volume): 0.6 dB

Physical

• Front ¼ in (6.35 mm) output
• Rear RCA input/output
• Rear microUSB
• Rear power
• Chassis material: Anodized aluminum
• Case dimensions: 4.12 x 3.87 x 1.12 in (10.46 x 9.82 x 2.85 cm)
• Weight: 9.28 oz (263 g)