[Green] I replaced the power supply after the original wire broke.

[1] Worked as described. The only issue was these new boards have a plug for the power input leads/ground and the older units have the leads soldered. If you can solder, no issue. I was lazy and bought a cable set from RME. Here's a pic: old supply on left, new on right with additional cable set. Power input leads are on top of the boards.

[AC Input] I've used Universal Audio, Apogee, Motu, and even Lynx interfaces over the years (30 years) - and I have now had this RME Ucx ii for two weeks, and I can see why RME owners are so loyal, and why these devices get great reviews - the stuff just works, and it's just so apparent how much thought went into the design. And the mic pres are actually no joke - they sound great, and they have tons of clean gain. I'm also pretty impressed by the quality of the DSP internal effects - I think the compression + delay/reverb sound great! The EQ? Eh, whatever... FabFilter.

No dropouts, no glitches, no hiccups. Obviously, it's only been a couple of weeks, but the fact that I feel the desire to write a review must show something, as there are plenty of other things I could be doing right now w my time, including music production work - which now feels that much more joyful.

Lynx is definitely one small step above conversion-wise, but honestly - the difference is pretty nominal. I use a Lynx Aurora (n) + an Api 2448 at work, and I feel the stuff is translating really well to this RME.

I purchased this UCX ii because I was using an Apogee Element at home, and they basically stopped supporting it and discontinued the product, and it works very poorly with a Macbook M1pro. Glitchy - slow - crashes. The RME sounds as good if not better than that and just works - not a single hiccup in 2 straight weeks of working with heavy sessions. For the size, this thing is a POWERFUL BEAST and has to be the best audio interface in its class.

If your thinking about expanding and portability isn't an issue, it may make sense to jump up to the UFX line, you get quite a bit more for another 1K.

Enjoy-

[1] I use this with Logic Pro on a 2021 MBP for recording, monitoring, mixing, and mastering in both stereo and 5.1, mostly for scoring and soundtracking. It has a clear, open, sound that accurately represents even very subtle changes to mix, EQ, soundstage, or plugin settings. Mic Preamps sound sweet and clean and will let the character of your mic shine through. The build is solid, and the knob and buttons have a nice click to them. It has a dazzling number of inputs and outputs for its size, and TotalMix gives the user super powerful routing options. Once configured, TotalMix makes it easy to jump between stereo and 5.1. My only caveat is that this is a professional tool, and if you are relatively new to this line of work, there will be a learning curve to understand all of the options the interface has and the concepts behind TotalMix. This doesn't mean that you shouldn't buy it, it is 100% worth it to take the time to learn, and RME has excellent tutorials. This interface will honestly represent what you play through it and will give you the power to create the recording you envision.

[0.6 lb] If your Fireface dies, this will fix it - most likely.


No instructions supplied, but fairly obvious once opened. To open the unit: 8 screws on top, 4 screws on bottom sides - no need to do the four screws on bottom front attaching the face to the frame, 2 screws on each rack ear. Inside, 4 screws and washers attaching power supply to frame, 2 plugs on power supply. Should take about 15 minutes to do.

Take care with the small screws that can strip easily - find a small pointy Phillips driver and apply good downward force to keep the blade in the screw until it breaks loose. I found that my Swiss Army knife driver worked pretty well.

[Green] Hard to get excited about a wall-wart - but I am. A switching power source, with options for different plug configurations... this is the power supply I've been waiting for from Sennheiser. International gigs will be SO much simpler now...

[1] I use with my G3 Mics

[0.6 lb] Easy swap for my Fireface 800 power supply, the input section was slightly different then my original (my old one was hard wired, this new one is set for a socket), Fireface boots much faster now, seems better then new!

[1] I went from an Apogee to this RME and the stability, recall ability and routing functionality is amazing! I really love this thing!

[0.6 lb] I had an Apollo Solo (Windows USB) and needed to sitch to an interface that was Mac/Windows compatible. After watching a number of YouTube reviews and reading Reddit threads, I opted for the Fireface. It works great. I really appreciate the number of inputs and the totalmix software is excellent. Sound quality is noticeably better than the other interfaces I have. It comes at a premium price, but I think it's still good value.