Now then Handbox brothers, l think l need some advice...my R400 has started clipping. The clip warning light comes on intermitently when l'm using my Barefaced sc's by themselves and together. Ive tried gain up, main volume down and gain down main up but it still comes on on a regular basis...any ideas please? Could it be the pre amp vales are failing? Or am l just pushing it too hard? My main gigging bass is a musicman stingray. Its a 2019 model and is used on a regular basis. Any suggestions would be helpful...thanks in advance.