Thanks - that is helpful. The thing I liked about the DX90 was that it had those swappable batteries so one never needed to worry about that.

One more question.... is there any harm in recharging the DX120 every night before it is depleted? Is it better to wait until it is down to 50% or ever lower?

Well, I did the update to the latest firmware, and all seems ok... I want to note for the record in case anybody is trying to research this question, the iBasso DX120 on balanced output is a great match for the Tin Hifi P1. I am hearing stuff I have never heard in my recordings before!

Hi - I just got the DX120 - it is actually charging at the moment, but I tried to play it with my Tin Hifi P1 IEMs, and it sounded sublime on the balanced out. I am going to finish charging and start using - can't wait. My question is should I update the Firmware? It looks like it presently...

Would the LZ A4 be a decent upgrade?

My DUNU DN-1000 seem to be broken (one ear has a bit of a buzz now).  I have enjoyed them and am tempted to look at buying another pair, but I thought there must be an upgrade to these earbuds that are still under $300.  I am wondering what people here would suggest given that I already like the...

I have a bunch of cable projects, and I am reticent to do them on my own (having little experience with properly putting terminations on cables.  Thus, I was thinking of looking for a local DIYer who is skilled at this.  Anyone know of anybody in the Washington, DC area?   SEAN

I am not going to run out and get a Pono since I already have a DX90.  I am just curious for future reference....and to check if I made the right choice in buying the DX90 instead of waiting for the PONO.... ;-)  

No A/B impressions between the iBasso DX90 and the PONO player yet?   I am looking forward to hearing impressions.

Yeah - I was thinking of trying to buy it from there, but somewhere when I asked on head-fi, people said iBasso does not ship to the US.  Is that true?  Frankly, its MSRP is already a good deal for the PB2 in comparison to anything else that competes with it.

Does anybody use the Alo Audio Rx MK ii amp with the DX90?  If so, any impressions?  Enough additional power?     I want to get an amp to use with the DX90 when I listen to my Alpha Dog headphones.  The DX90 works ok with these phones, but they could use a bit more power I believe.  I would...

Finally got a chance to listen to the new firmware produced by Lurker - thank you much sir - great stuff!!  It is definitely superior to the official 2.1.5.  As somebody already said, this new version combines the best of 2.1 and 2.1.5.  

I use the Dunu DN-1000 IEMs everyday with my DX90, and I think it sounds wonderful.

I totally agree.  I just picked up a 500c (a score off of Craigslist).  I am listening to my Senn 600s through it right now, and it is divine.  I have two other dedicated tube headphone amps (Bottlehead Crack w/speedball, a 805 SET headphone amp), but I think the Fisher makes the Senns sing...

Quick reactions to new FW (Lurker's L1 version) -    At first, I felt that it was a bit less lush than the previous 2.1 (Lurker's again), but after my ears settled down, the detail in this new version is absolutely incredible.  I biked home listening to a 24/192 vinyl rip of Lynyrd Skynyrd's...