MCooper

I recently purchased a 2000 Venture MM and the original owner tells me that the stereo has always just had one volume level (full blast / 30) I'm wondering if anyone on the forum has had any experience with this issue and what I should look for as the cause. Any advice on upgrading the cassette player to CD would also be appreciated. I try to connect my iPhone to the aux input but that volume seems to be at 1 / not amplified at all. Thanks in advance. Sent from my iPad using Tapatalk