[dds-dds]

Just on the off-chance my long search for the right mixer helps anyone else: I own the Formula One FF-4000, which can be switched from fader to rotary by just a few screws and then swapping the board. (Provided you bought the optional board). (1)

The sound is beautiful, the EQ/Filter is extremely smooth, though some prefer more bite to their EQ's (a la Technics SH-EX1200), this EQ is quite transparent. The build quality is high and solid, the pots feel weighty in a good way, plus I find the FX routing to be intuitive and flexible (which is one of my bugbears about DJ mixers). Yeah OK, they're not as cool as the DJM-400;) but for my setup it's a joy to work with. They build to order, so it can be a few weeks wait, well it was for me. Luckily I live close by their workshop and got chance to go in to check on the build. Oh, they also make a 6 channel version too.

(1) https://www.funktion-one.com/products/ff4000-dj-mixer/