Solid State LogicSSL 2 Plus MKII USB Audio Interface with Dual Headphones, Four Balanced Outputs, and Class-Leading Mic Preamps

Works great! no problems. Excellent interface. Not really a 4 output device if intending to connect four powered speakers. output 3+4 are primarily designed to be used for re-amping. Attempting to use output 3+4 as additional speaker out will be problematic on macos unless connecting to an external mixer. 3+4 have no level control with the macos core-audio driver. Might be possible with ASIO driver on Windows. Keep this in mind if planning to use with macos.

Amazing quality and sound. The amount of plug ins and other software that comes with it is worth the price alone! Legacy 4k gives that SL4000 sound. Great Audio interface.

It's difficult for me to do a complete review of this interface because my actual testing and use has been very limited. Overall it seems like a decent audio interface. The microphone preamps are extremely hot. I have the gain either at unity or barely on about 1/2. Anything more than that leads to clipping on the meters. I'm not sure that the meters are accurate though because the actual recorded audio does not appear to be clipped. The overall sound of the recordings is about like one could expect from a cheap consumer level audio interface.One problem I have trying to use this interface is that I did not get all the "included" software. The seller advertised and sold me this as a brand new item. It was obviously pre-owned, demo or used B-stock. The box was missing both documentation and the USB C cable. Also all the included software had been previously registered to someone else. I've spent a lot of money at Amazon over many years and read so many other reviewers who claimed this happened to them. I had a hard time believing it until now. I've been purchasing quite a few items lately. It appears the more one purchases from Amazon, the greater the chances are that this will happen to you.

Works perfectly. Strongly recommend