If you are unfamiliar with audio measurements please use a search engine with the query: "audio measurements" or "audio measurement handbook" Look for publications by Richard C. Cabot and also by Bob Metzler, both from Audio Precision. There are other useful publications as well. These will provide basic knowledge. Interpretation of the following measurements is beyond the scope of this post. The data presented were acquired as follows: 1. PrismSound dScope III, picoscope 5243B 2. DAC balanced (Bal) output XLR and unbalanced (SE) output RCA 3. 100 Kohm load used for measurements 4. dScope analyzer sample rate 48 KHz unless otherwise noted 5. DAC 44.1 KHz sample rate, 24 bit depth unless otherwise noted 6. USB cables – Schiit Pyst and Audioquest Forest 7. SPDIF input - Tecnec 75 ohm SMPTE 259M/292M Digital Broadcast Cable 8. Unbalance RCA cable - Worlds Best Cable Gotham GAC-2 or DH Labs Silver Sonic Air Matrix 9. Balanced XLR cable - Canare L-4E6S starquad with Neutrik XLR connectors 10. Vaunix Lab Brick USB hub 11. Shielded 14AWG and 16AWG power cables Schiit Modi MB firmware v2 (updated from v1) Modi MB - AD5547CRUZ resistor multibit 16 bit resolution DAC Measurements commenced after 100 hours of warmup post installing upgrade firmware IC. Measurements were performed over a period of 8 hours. Modi MB v1 firmware measurements may be found here Notable highlights: The glitch in V1 firmware previously visible at -70 dBFS is gone in V2. -90 dBFS now renders a sine. While V1 Gain Linearity was previously quite good for a 16 bit multiplying multibit architecture DAC, with V2 Schiit has set another new standard for this type of 16 bit DAC. Well done @schiit ! WARNING - PERSONAL OPINION FOLLOWS: Whether either the glitch at -70 dBFS or gain linearity deviation below -70 dBFS in V1 was audible to most of the listening population is highly debatable in my opinion. However, the improvement in blackground is welcome. Setup picture: Index Post 1 - measurement setup description, highlights Post 1 - SPDIF input - SE outputs part A Post 2 - SPDIF input - SE outputs part B Post 3 - SPDIF input - SE outputs 1 KHz resolution series, J-Test, residual noise SPDIF input unbalanced output measurements part A THD and THD+N Spectrum THD and THD+N vs Frequency THD and THD+N vs amplitude at 1 KHz IMD spectrum IMD vs ampitude Frequency Response Frequency Response (y-axis zoom) Inferred Jitter 1 KHz gain linearity Very impressive Gain Linearity for a 16 bit multiplying multibit DAC architecture. Well done Schiit!