i own the soundstrem pca 3500d and the soundtream pca 2000d. i've havnt any problem with my pca 2000d. i've had problemss with my pca3500d since day one and it still doesnt work. i sent it back to sound stream 3 times and they sent it but and it still dont work. i wouldnt buy the soundstream 3500d but buy there small pca amps.