Yes, the Griffin Evolve iPod Speaker is compatible with the CoolStream Duo. You can plug the CoolStream Duo into the 30-pin connector and stream music to the Griffin Evolve from your iPhone. The CoolStream Duo works with ALL iPhones and ALL Android phones.
The CoolStream Duo turns older docking stations like this beauty from Griffin into Bluetooth speakers. Continue reading: Is the Griffin Evolve iPod Speaker compatible with the CoolStream Duo?