That's correct and if you order from the official Ownice store on Ali it's gonna cost an extra 100USD on top of the K2 High price, Shenzen Burgeon wants 50USD + the K3 High price. I would say there's no need to order the 8 channel DSP unless you are going to use more than 6 channels. If you want video out or Carplay you can request it and pay the extra and save a bit. If you are ordering a unit that comes with a large custom frame you are best request they don't assemble the HU and frame before shipping. You can easily assemble it yourself and it will save you having to wait for a replacement frame. Their packaging is useless and whoever puts the HU in the box is clueless.