Originally Posted by MichaelPatrick ➡️

Well, technically DigiCheck acts as an ASIO host, but it has direct access to the UFX digital stream allowing it to perform many other functions efficiently, such as these (from the manual):

• Level Meter. High precision 24-bit resolution, 2/10/28 channels. Application examples: Peak level measurement, RMS level measurement, over-detection, phase correlation measurement, dynamic range and signal-to-noise ratios, RMS to peak difference (loudness), long term peak measurement, input check. Oversampling mode for levels higher than 0 dBFS. Supports visualization according to the K-System.
• Hardware Level Meter for Input, Playback and Output. Reference Level Meter freely configurable, causing near zero CPU load, because calculated from the Fireface hardware.
• Vector Audio Scope. World wide unique Goniometer showing the typical afterglow of a oscilloscope-tube. Includes Correlation meter and level meter.
• Surround Audio Scope. Professional Surround Level Meter with extended correlation analysis, ITU weighting and ITU summing meter.
• Spectral Analyser. World wide unique 10-, 20- or 30-band display in analog bandpass-filter technology. 192 kHz-capable!
• Bit Statistics & Noise. Shows the true resolution of audio signals as well as errors and DC offset. Includes Signal to Noise measurement in dB and dBA, plus DC measurement.
• Totalyser. Spectral Analyser, Level Meter and Vector Audio Scope in a single window.
• Channel Status Display. Detailed analysis and display of SPDIF and AES/EBU Channel Status data.
• Global Record. Long-term recording of all channels at lowest system load.
• Completely multi-client. Open as many measurement windows as you like, on any channels and inputs or outputs!

What's nice is you don't need any DAW software to record all channels on the PC disk at the same time you're recording to USB memory plugged into the front panel. I don't know how they do it, but they do have a premier reputation for flawless PC integration and drivers.