This is an Audison DRC AB controller. Functionality has been confirmed. The protective film is still on the display, so it's in beautiful condition. For those who don't have one for their 4.9bit, 5.9bit, 8.9bit, F8.9bit, bit ten, etc., or for those using the old DRC like the bit ten D with a damaged display, how about this? If you want to embed it like in the third image, we can also provide MDF cutting with an opening of approximately 15cm x 10cm, slightly larger for the DRC AB to fit, if you wish (additional cost applies).