Many thanks ThatBeatsGuy!
I have experienced both the HP50 and ATM-M50 myself and currently owned the HP50. Both have a very different signature. I can definitely see why the YouTube reviewer find the ATH-M50 to be more engaging although I disagree. Here's my short comparison between the HP50 and ATH-M50 [individually done as well]
Audio Technica ATH-M50:
I personally am not a fan of this headphone. Indeed, it is a great pair of headphone 2 to 3 years ago, but given that there are so many audio brand releasing better headphone at a similar price, it is no longer on my top list. Anyway. The bass on the ATH-M50 extends deep, but it lacks the control that the UE6000 offers. ATH-M50's bass sound bloated and boomy. It bleeds to the recessed midrange. If anything, I find the treble on the ATH-M50 to be hot and I find it a fatigue to listen to at times. The lack of soundstage is also my concern with the ATH-M50. If anything, I would rather go for the UE6000 which is now discontinued but still can be found online easily for less than $100. The only thing I adore about the ATH-M50 is its ultra durability. The housings are mostly made of plastics but they are EXTREMELY durable. The pads can be a little stiff after some use.
NAD VISO HP50:
I bought it used mainly because it is popularly mentioned here. I personally like my B&O H6 better for the H6 is more relaxed, better built, more comfortable and easily transportable. The HP50's bass goes deep down, all the way down. Very well controlled and unlike the ATH-M50'S V-shaped sound, the HP50 is pretty flat throughout. That said, the HP50's bass are not as powerful as the ATH-M50. The midrange is very natural, awesome dynamic. The highs are clean as well. No spikes as mentioned. The HP50 also offer impressive soundstage at $300, in a closed headphone. Its got the width right, but not the depth. The downside I find in the HP50 is that the lack of instrumental separation makes it not ideal for rock music. While the midrange is very natural, I do not find it as smooth as the B&O H6.
Personally, I find the HP 50 is a major upgrade over the ATH-M50. Both do not need an amplifier to power it as they are both extremely easy to "drive" The HP50 wins the ATH-M50 in:
- Wider soundstage
- Neutral and Natural
- Tight bass
- Dynamic
- Resolution
- Clarity
- Less Fatigue
but the HP50's build quality and comfort is a big drawback for me. I will am working on a full review for the HP50 so if you do not mind waiting until next week