Here's a new question for Jim, Charlie, et al. I'd mentioned I have the nice CyberAcoustics speakers, but I would term them colored since they have an adjustable bass knob and can't really be run flat. Let's say I wanted to get a single monophonic studio reference monitor for mixing like the Behritone C50. I would think in my situation, rather than coming off the sound card, I should come out of the Focusrite Scarlett interface. When I discovered that the Solo had unbalanced RCA outs, I changed my order to the to 2i2 with balanced 1.25" output plugs. I would have thought I'd want to come out of those with a stereo TRS Y-cable or adapter, with a male TRS plug on the other end, to go into the Behringer to keep the system balanced. For the life of me I cannot find this cable, and I'm wondering if I'm missing something, if TS is adequate, etc.? Thanks so much for the continued help. Jim, I didn't see your latency comment until today, so thanks again. I think I'm in good shape with the Scarlett and the XLR mic I chose.
Many users will have a different opinion. My opinion is that unless you want to spend a bunch of money purchasing studio monitors and treating the room you use for mixing you're better off learning the strength and deficiency of the speakers, room and your hearing.
First, perform an online hearing test. There are several videos on YouTube where an audio file sweeps from 20 Hz to 20 kHz. Listen both through speakers and headphones. What is the lowest frequency you can hear? What is the highest frequency you hear? How differently does it sound between using speakers versus listening through headphones? When you're listening to an audio file that has a constant volume level does the volume level change when listening through speakers or headphones?
Next run the same sound tests with a microphone at ear level close to where you sit. Record the sound of the frequency sweep audio coming through your speakers. Place the recorded file underneath the audio file and compare the two files. How do they differ?
Once you do this you'll know about your hearing, speakers, headphones and how your mixing room affects what you hear. Once you know this information you can use that knowledge to compensate as needed.
The exercise will cost you some time but can save you a lot of money and aggravation.
Again, this is my opinion.