Hi Raf,
I used to have Tesla Powercell 4Se in my system up to last December. It made HF to become more refined and provided more sound-stage extensions. Based on my experience, bass was a little bit softened. Overall it is a very good Power conditioner for Tube amps. Especially its non-limited current characteristic made it very appealing for big amplifiers. Except Tara labs (Pm2, Ad6 and Idat) power conditioners, I don’t know any other PC having this characteristic. Powercell does not provide any surge protection, so you need to be aware of that.
I used to cascade Powercell with Tara labs Pm2/Ad6 and result was excellent. You could also cascade your Powercell with Transparent filter bank and find out whether it would improve the sound quality or not.
Upgrading MPC adapter of Powercell (30-32volts output), would bring more resolution and refined HF to your system. It is recommended to do so. There are some comments here at Audiogon about how to do it. Instead of that, I also tried, some laptop AC/DC adapters which usually are very good (30-32volts outputs) and result was much better compared to original MPC.
BTw, your Furutech FPX is a very good WPO, and perhaps adding a Tesla plex Wall outlet will make your system too bright!!! Right now, Furrutech Gtx Gold is on sale for $140 which is pretty good and maybe it could compensate/improve the bass frequency of Powercell.
Hope that would help,
Cheers,
Michel
