I have just come back from REVTRONIC and I have to honestly say that 'Pops' and his team are absolutely first class at what they do. I had a problem with the CD player in my Mercedes S Class 320L and I thought that the unit would have to be taken out and repaired by REVTRONIC, however 'Pops' had a listen to the CD player and was able to tell that the audio signal was not correct, now I have a good ear for music as a musician but could not tell that the audio signal was faulty 'Pops' indeed is an expert in his field. In around an hour REVTRONIC had worked their magic on my car and not only got the CD player working perfectly but also cured a fault on my idrive which I had not noticed. The team at REVTRONIC are very helpful and make a good cup of coffee! Of course I do not want my car to have any more electrical faults but if it does 'Pops' and REVTRONIC will be the first company that I will call - absolutely fantastic and highly recommended!!!