Hello I'm looing to change the stock tubes on my Valhalla 2 that I use with the HD650s. It seems like when I turn it all the way up the base sounds little distorted. I use a Bifrost DAC as well. I mostly listen to trance and would like my bass and highs to sound cleaner. Just not sure what...

Hello there, I've been using my HD650 with a portable amp (Headstage Arrow) for a few years now and I'm currently planning on investing in a more serious headphone amp' to improve my listening experience. So firstly: is it even relevant to invest more? Maybe the Arrow already provides the best...

While I was searching for a headphone amplifier for my hd650 on eBay I came across this. Looks like bottlehead crack but I'm sure it is not. Does anyone has any experience about it? It has a affordable price with free shipping. (For me)...