Remember that different headphones and IEMs may need a lower noise floor or different power characteristics. It’s also worth noting that it’s relatively common for amps to perform worse when the current draw increases.
https://www.youtube.com/watch?v=PqlcJnoIcGo
I have not seen exhaustive measurements of this amp, but it seems to be good for many, but not necessarily all, headphones.
If you haven’t read Crins post on this, you should.
https://crinacle.com/2020/04/19/the-big-breakdown-ranking-list-update/
As already demonstrated in this comment section, these kinds of audiophile terms really annoy some people because they aren’t super easy to define. While it is possible to find and pinpoint many subjective things in objective data, it’s bloody difficult and confusing. Plus, we all have different ear canals, taste, and levels of ear training. This isn’t to say that there’s a lot of confirmation bias going around. There definitely is. But these subjective terms are still useful tools for describing the subjective experience. The fact of the matter is that objectively captured data is also liable to being misinterpreted. So in my opinion, you need to learn how to evaluate both subjective and objective data points.
If you think of a drum kit, the tom-tom could be said to have more note weight than the snare. A fat smash on the tom will give a big bong! sound coming all the way from the bass and saturating the upper harmonics with vibrato. That’s heavy note weight. Listen to Pet Sounds and you’ll get the idea. On the other hand, the dink! of the rightmost keys on a piano could be considered a light note weight.
The Headphone Show on YT has done some videos about these audiophile terms. It’s worth a watch.
https://www.youtube.com/@TheHEADPHONEShow/search?query=terms
Yes and no. The DAC X6 has roll-off in the bass and treble, altering the frequency response. It might also not have the power headroom to fully reproduce the total dynamic range of the music. The performance might also decrease as current output goes up. That’s not uncommon.
DACs today are pretty much all “perfect” so that’s a non issue unless we get into R2R stuff. But amps can have deficiencies. Some present problems or traits that are more or less apparent depending on the characteristics of the headphone or IEM you plug into them.
Also, it’s very hard to properly compare source gear, because not having a perfect volume match will significantly skew your impressions. And confirmation bias is always a factor in our perceptions.
Just FYI, you’re likely to get a slight latency when using wireless headphones. That could potentially cause problems when playing.
Assuming you’re looking for more or less transparent amps and no funky synergies, there’s not much to consider.
https://www.youtube.com/watch?v=PqlcJnoIcGo
Your Magni has enough power for both your headphones. If you want something that’s potentially a bit nicer, then the new Midgard looks interesting.
No need to replace the DAC.
The catch is that this particular headphone draws a fair amount of current. Potentially more than a regular receiver will put up with without the distortion going up. It’s hard to know for sure with receivers since the relevant specs are almost never published.
If you’re in north America, Schiit Audio currently has a closeout sale on their Magni+ amp for 80 dollars. That could be a good choice.
The potential crux of hooking up an amp to the headphone or line-out port of a PC is that if the internal soundcard is picking up electrical noise, an amp won’t get rid of it. You’d need an external DAC to fix that problem if it happens.