From the descriptions and reviews I've read it appears to me that a change from my current AKG K550 to NAD Viso HP50 may be more of a sideways as opposed to an upgrade (ie both have neutral signature?). Would members agree? It's very difficult for me to audition kit where I live which tends to...

Hi all,   I wanted to introduce myself as I have just joined the forum (I hope this is the correct sub-forum area!).  I am aged 41 living in the UK and recently acquired a taste for good headphones and headphone amps, although I have been into full size hi-fi for a number of years.  I think I...