Pioneer SC-LX86 - Knob Feel Review Well, this behemoth from Pioneer is certainly the heaviest piece of kit to grace my table. And two knobs, both varying hugely. The input selector has a lovely light, notched rotation, whereas the Volume knob has a lot more weight to it (maybe too much). However, the axial skew on both knobs is huge. This is a deal breaker for me. If it wasn’t for the skew it’d be an A* knob feel.