Good evening, until recently I had in my old 5er a Sony retrofit radio in operation which were connected via an ISO adapter to the wire harness. At the time I had bought an I-Soamp amplifier which is also connected by ISO plug (black/brown). I had it in operation test by test but could not find any improvement. I installed a stink normal stereo system (5 speakers). On the radio I could not find any setting. The amplifier had green Now I have switched to an Android radio that does not have an ISO adapter, but many Cinch connectors. Among other things for Audio In/Out Video In/Out or a subwoofer. However, there is no extra cable available for a amplifier. I now ask myself the question, do I get the I-Soamp on the radio to run via ISO to Cinch adapter without soldering or the like? If not, are there alternative systems that are plug&play as possible?