My recommendation would be to skip the HAES amp , the stock radio cdr 220 is not the best but decent with ipod input. The amp though, close to useless in my opinion. The built in filters makes it very hard to match any speaker at all to it. If you had the old power supply cables for the amp in the car you would also understand that nothing good can exit that black box. If stock look is important use the Cdr220 but a new amp is a must together with decent speakers.
Hybrid Mode
