I received this unit from @Armaegis a long time ago. Being as it may I only recently opened the box. It's been incredibly busy at work with all this SARS 2.0 issues and so on. However, I'll do my best to review this unit. In many cases I start by listening the unit and then proceed to capture random measurements. This time I did it backwards. I started taking measurements first. I also took pictures. But I'll upload those some other day. I only measured the balanced line-outs 1 and 2 out of 4. I measured @ 96 kHz sampling rate. I did a quick THD test with 44, 48 and 88 as well and saw no big difference. That said I could not get 176.4 and 192 to work using ASIO + REW. I will check if that works later when I listen through the headphone output at some later point in time. Balanced full scale in this unit seems to correspond to 6.22 Vrms, and so this will be 0 dBFS which in the plots that will follow is dBrA (referenced to 6.22 Vrms). NOTE: If the images are not very readable, click on them to expand. THD characterization at 4 Vrms are shown below: We get THD+N of 105 dB (A-weighted) with 3rd harmonic slightly dominating the 2nd harmonic. Note also the delta-sigma modulated noise is effectively suppressed above fs/2 = 48 kHz. Here is the THD+N vs Vout characterization: At 4 Vrms (-3.83 dBFS) we get 0.00057% (-104.9 dB) THD+N (A-weighted). This is close to the minimum THD+N for this device. At full scale, THD likely dominates and increases since the system may start to approach clipping. Here is the IMD SMPTE vs Vout characterization: It is worth nothing that IMD SMPTE minimum of -100 dB is reached around -15 dBFS which corresponds to about 1 Vrms. At 4 Vrms the IMD SMPTE increases to about -94.6 dB as shown in the monitor above. From -30 dBFS and on, IMD SMPTE is below 90 dB, which as far as I know is fairly reasonable. IMD characterization at 4 Vrms is shown below: This test is done with two tones @ 60 Hz and 7 kHz respectively. It is interesting to note that the IMD around 7 kHz is not symmetrical. Not sure why that is, but the levels are low enough to be of no concern. Here is a multitone test: While I have seen better measurements in the interwebz, this device seems fairly competitive given the features it packs. This is not just a DAC, or an Amp. This system carries 4 outputs, a headphone amp, and it can record both through a phantom voltage assisted mic pre-amps, or straight line inputs. All of which I have not characterized or tested. Unlike my 2i2 gen 1, this system is not just solely usb powered. It's got it's own wall wart which means it is not nearly as underpowered and is expected to provide much better drive and overall performance. The system seems much better build and solid as well. For reference, here are the manufacturer's specs: https://focusrite.com/en/usb-c-audio-interface/clarett-usb/clarett-2pre-usb They claim THD+N of 0.00075% for their line outputs, which they clearly meet. How does it sound? I don't know yet. I'll check it out later.