Mine (SS) arrived today!
You know when you hit the bullseye in darts? Or when you hit a strike in bowling?
A package arriving on a Friday is no different.
I got DX300 MAX in two packages: one only had the DX300 MAX, and the other had the OG box & all the accessories.
The 1st package arrived 7 days ago, on a Friday. The second arrived today, on a Friday.
The shipping Gods have decided to bless me, and I am thankful to them for just that.
It should be very sweet, will be very curious on your thoughts on it 
I have to say, I’m curious as well.
Just a couple of days ago I had an opportunity to meet up with a fellow Head-Fier in Serbia. He also owns the DX300 (I own both the DX300 & the DX300 MAX), and I had the opportunity to listen to his MMR Thummim… Mind. Blown. That thing is out of this world, never heard an IEM like that.
He had the AMP12 EX (Whitigir mod), while my AMP12 is stock and unmodded.
With all of this being said, it will be interesting to compare AMP11 MK1.1 & AMP12 against the DX300 mAX.
Love mine, very unique and a blast to listen to. It might not be the most neutral or anything like that, but it’s loads of fun, and it’s presentation, spatial recreation, and bass is like no other so far lol
Soundstage is what blew me away the most. It sounds like a full-sized headphone (imo, without any exaggeration).
The bass also sounded very tight, fast, and had great depth & quantity. I also found the treble to be very clean & sharp — just the way I like it.
I didn’t have a chance to listen to it for long enough to make accurate observations, but for the couple of minutes that I’ve listened to it, I started questioning every other IEM I listened to…
The price is very steep, but when you consider its sonic performance, isolation, size, comfort, and the fact that it is actually light despite its large size, you can actually put the price in perspective.
Need your guys’ input.
Burn-in. 150-200 hours suggested by the manufacturer (I’m aiming for 200).
So, I’ve already contacted iBasso regarding the settings (gain, volume pot position, DAC volume) for the burn-in process, but I’m having a debate with myself over how to go about charging.
Should I leave it on the charger or should I let it naturally drain to a certain percentage and charge it up?
Of course, my concern is the battery health.
If I’m playing music + charging, it doesn’t sound particularly nice for the battery. Especially for 200 hours.
I let my DX300 drain to max. 20%, then I charge it to 80%. Should I do the same for the DX300 MAX in the burn-in period? Perhaps I shouldn’t play music while it’s charging?
Too many questions. Help.
Hmmmm. Honestly you are likely fine either way, the burn in is a one time thing, if you were doing this for it’s entire life cycle then I’d be concerned about the health of the battery, but honestly it’s likely not going to do damage if you leave it plugged in and playing for a few days at a time (perhaps give it a break every day for some time? So like every 24-48 hours unplug and turn it off for some time to cool off, then continue after). Modern battery designs and charging regulation should really minimize any unneeded wear on the battery (it will cycle things itself to prevent wear), I’d be more concerned about potential heat than the actual wear on the battery (since you are both using it and charging at the same time which can make more heat).
Just letting it to get around 20% and charging up (while not playing) would work well too, although more hassle but would likely be the least worrisome. But I think whatever way you feel more comfortable with, both accomplish the same goal, just depends on how much you want to hassle with it
But I think if you start from the battery at full state and keep it plugged in from there, there won’t be any appreciable damage or harm to the battery, but I’d watch how hot it gets depending on how hard you are driving it for burn in. But make sure to start when the battery is already charged, don’t push it hard and force it to recharge from a low state at the same time. Also don’t just leave it charging doing nothing, make sure it’s actually burning in or is drawing some power, not sitting idle
This is at least coming from the perspective of how most modern devices like phones handle charging and modern battery tech, I don’t know how ibasso implemented their battery charging circuits and what they may have changed
Thanks.
Yup, also had heat in mind. Playing + charging = a lot of heat.
Okay, I will see what works out for me. Currently it has been burning in for 5 hours (Mango OS, Dekoni Blue plugged in), it’s at 38% right now. If I am awake long enough, I will see how the temperature is while its charging and playing at the same time.
I plan to do 24h with headphones plugged in, 24h with the burn-in cable plugged in. But I’ll see if I can hold my sanity while doing that, or if I’ll just give up and stick to just the burn-in cable.
iBasso recommended switching up between IEMs/headphones and the burn-in cable. They also mentioned that I should turn it off every 24h for a couple of hours. iBasso themselves (Paul) do the burn-in process while the DAP is charging…
Sounds like a plan
Yep sounds right to me, so there you have your answer lol
Got it. So you are suggesting to only play and charge at the same time once its fully charged.
My plan was to let it cool off by turning it off and letting it charge to 80% (or fully just during the burn-in process) and then continue the process and stop charging. The plan sounds great, but could take forever… an eternity.
More like one insanity later 
Yes
I’d just get it to 100%, let it sit there for like an hour, then start the burn in process. That will just put the least load on the battery
Charge to 100%, let it stay charged at 100% for an hour, take it off charge and go on with the burn-in process?
Ah no sorry for the confusion. Charge to 100%, keep it plugged in at 100%, then while it’s still charging start burn in. Basically the only reason I have that space in there is to let the battery cool down from more intensive charging
Got it, that made more sense.
Love you M0N =)
Speaking of iBasso, I see that you are a former SR2 owner. What were your thoughts on it?
I enjoyed it, was a more fun leaning can that was a bit more midrange focused overall with a bit extra warmth (although could use a bit more low low end), great punchiness and impact, good presentation, never harsh, more spacious, solid timbre. Think of a more relaxed, more open, and more rich sounding x00 almost. I do think they can get a bit hazy and lack some technical ability (not the most controlled, lacking some resolution, and depth is meh) but it’s not enough to really distract from the experience in this case. Fairly dynamic as well which is pretty enjoyable
Sounds like fun, thanks.
When I see “SR2” and “former owner” in the same sentence:
Lol, just been downsizing and selling off things I didn’t use as much, and with other headphones I had I admittedly wasn’t using it very much anymore. Although they did go to a coworker and he does really enjoy them
Some interesting findings during the burn-in process (btw, I’m tracking the whole burn-in process, writing everything down):
The very first day I started the burn-in (Oct 7th), I actually managed to get the analog and the digital batteries to be around the same %. This was even after using both Android and Mango OS for some time.
The second time (Oct 8th, morning), the battery levels were uneven, with the analog section having roughly 10% more.
The third time was also today (Oct 8th, afternoon), the battery levels were even more uneven, 15% difference currently. However, I did switch from headphones to the included balanced burn-in cable… but shouldn’t the analog section be draining more instead of the digital section? The burn-in cable has a constant load, so shouldn’t it be draining the analog section faster? Also, this time I didn’t use the screen at all (maybe twice or thrice in 5 hours, for only <10 seconds).
Regardless, I think that I might need to leave the DX300 MAX an hour or so more once it reaches 100%. Because, what I have been doing now is that I’ve just been unplugging the charger as soon as the batteries reached 100%. I think I might’ve “overcharged” it the first time I charged it, maybe that’s why I was able to get the analog and digital sections to be on-par in terms of %.
Interesting findings (imo). Curious to see more results in the future.
Edit: It turns out that the percentages evened out right around 60%. Currently (Oct 9th, evening) they are still evened out at 42% analog, 43% digital.
