The unit looks lovely on my desk, really gives some analog life to the look and feel of an in-the-box mixing room. The big knob and relay switches have a solid feel and nice "click". The headphone amps and DAC are the quality I'd expect from API.

Some things about this design could be better. The location of the headphone jacks on the lower rear and surrounded by other jacks are impossible to find by feel. At least one should be on the front, accessible to user. Any vibration (keyboard typing on the same desk, sub energy) causes the top lid to rattle annoyingly. I fixed that with some friction tape but we shouldn't have to do tape workarounds at this price point. I purchased my unit in late 2022. At least at that point in time, USB interface was incompatible with Apple silicon macs. I had to send it in for reprogramming at my shipping cost. Unknown if this is still an issue - there is no mention of computer requirement in the documentation.
No power switch.

The segmented meter is big and beautiful. At least on the built in DAC, +6 on the DBu meter represents digital zero. So the top half of the meter is never seen in my primary use. More of a preference than a "flaw" but I wish this meter could be user calibrated.

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This monitor controller sounds amazing!

The DA is superb and clean, and headphone amps are very powerful. Monitor inputs sound like anything API: punchy, present and fat!

Bigger size than I thought. I wish it had a L/R swap button. Yeah, some plug-ins do that, but still...

Despite that, this is a fantastic sounding unit! Totally recommend it.

This api monitor controller was just what I needed to tie my main mixer and peripheral sources together - all in one neat, convenient place. Great api sound, built to last, and I know this sounds nuts, but I love the colored, illuminated switch buttons on this thing. Gorgeous! Really adds to the "atmosphere" in my hybrid studio/listening room.

MY ONLY WISH IS THIS WAS A MORE ATMOS FRIENDLY MONITORING SYSTEM.