Noob question
I have a HD650, and have no headphone amps, the sound quality is good when plugged on my PC and I never had a comparison. Until I found a old Pioneer SX316 in our garage, plugged it in the front headphone plug, and found the sound to be slightly different (in a good way).
So I want to use this as the "amp", but someone I know that knows more about headphones than me, said this can damage the headphones. Because these old receivers might have unstable voltages or something. I was skeptical and try to look online for answers but didn't find anything relevant