I bought a used HD500X, and quickly found out it was manufactured back in 2013. I'm wondering if there are any hardware differences between then and now. When I download patches, they never sound anything like what the creator recorded. Of course, it could be because I have a much different guitar (Taylor T5z). If there's no hardware difference, and I'm up to date with my firmware and amp models, then I must surmise that it's simply my guitar. Thanks in advance!