Thank you, we look forward to hearing more
Finally back from my first weeks with my C301 guys!
What can I tell you? I am in love with them. These earphones are versatile. Depending on what I plug them on, I feel like I'm hearing different pairs of phones.
For a portable setup, I think that the combo Sony Xperia Z1 + Digizoid ZO² is the way to go for me. With this you can enjoy a smooth yet precise sound, contoured by a dynamic bassline. You truly feel the "subwoofer experience" but it's the kind of "intimate yet extended clubbing" experience. I use it almost everyday and I can't get tired of it, really.
In comparison, without the ZO, the C301s are already a pair of phones worth it, everything is already way better than the average listening experience. But it lacks something to me, maybe some more life. Sound is too much tamed.
Now for another setup... I plugged them on my MSI GS70. I use Equalizer APO on my PC so I can make presets on the go for any phones, if you don't use it yet just try it. It does not bypass Windows itself, it acts like the source before Windows adds everything. So every program, game, music source will be controlled by the equalizer, that's pretty awesome IMO. Just be careful while using it, never use any of your sources/DAC at full volume because if you hold on triggers switch for too long while you're setting up your EQ, the program continuously sends signals to your PC and... the result is that for 1 or 2 seconds sound level will go to MAD levels, it might be bad for your ears AND your phones.
Anyway, back to the topic! Plugging directly the C301s into my pc, the sound was cool, but I wanted a bit more. I plugged then my ZO on them, and it was ok, really! But I wanted more again. So finally I double amped them, C&C BH + ZO². There I felt two things.
1) The C301s are a hungry pair of cans, and driving them properly just changes a lot in everything about them. Before I had awesome earphones, now I have monsters.
2) Now welcome the BASS monster with impactfull bass, welcome the rich and warm tonality of mids... and welcome the harsh side of sparkly yet crystal clear highs.
The word is out, I see what you guys meant when you were saying that the Denons can sound really harsh on the high. It's not a distorted high, it still is damn clean. But it's like a piercing one. That of course is with the stock FLAT EQ from my PC. But I suspect that I will hear the same from my Z1 is I double amp them, since I don't have at least a 10 bands EQ on my phone yet.
I didn't like it at first hearing, it was like a wild beast. Too ferocious. I spent almost 3 hours on EQing them then, with various settings.
And with the proper EQing, here is how I will describe them from my PC with proper driving : these earphones are just an insane bang for the buck. The sparkly pics were succeessfully tamed, the vocals are intimate and gorgeous, I love enjoying a warm guitar like it's playing in front of me, or like it's plugged on a good tube powered amp. Even the bass can be tamed or overboosted like you want, I could not make these earphones sound distorted. Whatever I threw at them, I got it back right away in the proper manner.
Finally my actual best listening experience with my C301s is when I EQ them properly and double amp them from my PC. Though I don't feel frustrated when I'm on the go with my Z1 and my ZO. Actually I just feel like I hear another pair of earphones. Both are great for their use, and the best is that it is the same pair in reality.
However, I need to point out that I have a little pinch about the fitment in the ears. I usually use the stock buds without any stabilizer, it suits me well and it's comfortable. But when I move it might move and i lose a bit of seal. Using the stabilizer keeps them in place but I can't totally "pop" them into my ear canals. I win some stability but I lose some bass. So I don't really know what to think about it. At least, I don't have aches with them, the phones are featherweight!
When I am involved in group description processes, I encourage and ask everybody involved to reach whatever level of accuracy is required for the description to be effective. With headphones, detailed descriptions are quite useful because of the big differences in sound preferences and sound flaws tolerances among people.
My AH-C300 are now sounding like a $185-$200 pair of bass heavy IEMs. At 350+ working hours, the treble keeps moving away from being dry. Changes are subtle. But, small changes make the difference between audio haven and having our ears complain from sound indigestion. The best amp for my C300 used to be the one with the most treble. Now, the best amp is a different one because all of my amps are producing good highs with my C300. But, there is more. I have noticed that the bass has tightened up enough to let me raise the 50kHz and 55kHz EQ sliders higher. Before, raising those sliders higher, resulted in a disorderly rumble and no added punch. That was wrong! Now, raising those sliders adds noticeable punch and some orderly (or perhaps tolerable) rumble to the mix.
Overall, the way my C300 were sounding before, made me wonder if the big price drop from $200+ to $80- came with a downgrade in some part of the design. With the actual sound, it is hard to think about a downgrade involved in the price drop.
I have placed my AH-C300 back into listener absent work. My listening time is on average about 1.5 hour per day. So, adding 100 working hours would take about 67 days in normal mode!
I am glad that my final impressions can't be turned in yet for my AH-C300 pair!
I hope that I will hear an evolution too, bud!