Hi all, could be a noob question, but just wanted to check. My A39 balance control does not completely shut off one channel and I'm not sure if that's normal or not. For example if I push the balance to L12(max left), the left channel is louder than the right but the right is still pushing sound. Exactly the same thing happens if the balance is pushed to right, right channel is louder but it doesn't completely shut off the left channel. Thanks.