I have spent a few years trying various office systems (including a laundry room when my son was born).
The very best sound I have had was by eliminating the room. That is using the RAAL SR1b earphones or CA-1a headphones. However, even for myself I cannot listen to the phones for the whole time I am in my office (M-F about 18 hours). The RAAL SR1b gets late night duty and takes top honours for best 2-channel sound.
I learned that you could get almost any speaker to work in a small room using convolution filters to run on Roon or JRvier (this is DSP). This only works for streaming and requires a bit of computer technical savvy. I got my floor standing Thiel CS3.7's to sound good in the same size room as you. I paid $750 to get a digital guru to remotely fix my setup.
Digital Room Calibration Services, Convolver, Headphone Filtersets
After a few years of the 3.7's I went to a more appropriate speaker for a small room. The Magnepan LRS+ at $1000. This speaker will fill your room with a wall of sound. It lacks a bit of the detail that a KEF LS50 Meta has. However, it is even easier than the LS50 to place in a small room. The LS50 is good in a small space but you need to have acoustic treatment to handle the first reflections.
The LRS+ in comparison did not need the treatment because the sound radiating pattern is more direct. You can place the LRS+ panels closer to the side wall and angle the speaker to your seating position. You need to place the speakers at least 3 feet from the front wall.
Only issue with the LRS+ is that to really make it sing you need some power and that will add to the cost. I tried the following with seriously great results,
- CODA #16
- Sanders Magtech
The following are low-cost amps that could drive the LRS+
- Schiitt Wotan ($2k)
- Parasound A21+
- many high-powered Class D amps
I ended up losing the office space to an even smaller room and I sold the LRS+ to buy a used Magenpan Mini ($1000). I have it sounding better than the LRS+ since the Miini has better details. I am using the Schitt Wotan and a Schitt Yggi+ DAC.
With the LS50 | LRS+ | Mini I am using the KEF KC62 sub which works perfectly with these lively speakers.
With the LRS+ and LS50 I was about 8 feet away from the speakers. With the Mini I am about 4 feet away. The Mini is my best setup in a small room after the RAAL SR1b earphones. I am rather surprised at how good this sounds.
My small room system is Schiit Yggi+ OG | Schit Kara F preamp | Schitt Wotan amp | Magnepan Mini | KEF KC62 sub.
If your amp has the power, then the LRS+ or Mini will give you a very engaging sound with less problems with placement. The LS50 and other cone speakers are more difficult to place in a small room, so you need treatments for best sound.