sound stage

I hear in reviews about amps that some have a large vertical sound stage. What is a vertical sound stage exactly? I feel like I know a horizontal sound stage, the separation of instruments and vocals. But I am not sure what exactly is meant by a 'large vertical sound stage'

I have been using my HD559s for about 3 years, and I love these, the one thing which I like very much about these are the punchy/muddy bass but when I read the reviews most of them didn't like the bass as it was too muddy. So I am looking to upgrade these, what i want in my next pair is a wider...

Hello folks, I am using RME ADI-2 FS as a DAC/Preamp feeding my power amp NAD C298. My amp has a gain control from -20dB to 0dB. In my current setting, I kept the amp gain at 0 and my RME volume is around -40 to -50 db. Im wondering if it’s better to lower the gain in my amp and increase the...

How is your current speakers placement? I am mostly interested in the results of the poll, but It would also be good to write brand and model as well as listening distance and room dimension if you wish. Feel of course free to share your thoughts and/or your experience with different speakers...