Moin. I’ve had a Helix HXA400MK2 and a HXA1000QX for years. I’ve always been super satisfied with it and I’m very attached to the stuff, but unfortunately I can’t get that sooo good in the BMW anymore. I don’t want to do it all so much. Actually, but I don’t want to take the car apart completely. Anyway, I think about selling both power stages and buying a relatively compact 5 channel. Price: 300 – 400€. It doesn’t matter on 50€. Can you recommend something to me? n? How about the Helix H500? Shouldn’t the dimensions be so big. You can suggest something. Nice greeting PS: Does anyone need a HXA1000QX in new condition? Or a 400MK2?