Moinsen, who can help? Have the HK amplifiers in the W203 and W211 the same signal protocol? Have seen an MOST adapter at Dynavin, which according to the seller’s information should fit both for W203, W204 and W211. In the Prodiukt description of Dynevin was formerly W211 and W251 on it. Recently, Dynavin even has W203 W204 and W211 on it. Now I wonder if the must adapter has been modified electronically or if the product information has only been expanded. And a few more Fr agen: If I pick up the signal from the speaker output from an OEM radio to power the MOST adapter (AUX in connection) in a signal-wise way, must a HI-Low adapter be switched between them? Who has ever got the HK system to run in a plucked W203 with an OEM radio? If so, which MOST adapter has been used? Gruss Hein_nieH