Hello all AK family.
First and foremost I wanna thank Dr. Sheep, Clee290 and everyone else here who contributed to the knowledge of this product for making it user friendly. I learned quite a bit before buying my AK Jr thanks to all o you.
Overall, my impressions are pretty good about how I feel with this DAP. I find the JR to be incredibly warm sounding with a very thick mid range that leaves me toe tapping from here to kingdom come!
There really isn't even a hint of digital edge with the JR And pairing the JR with the SONY MDR Z-7's makes for a very very pleasant listening experience for long periods of time.
I've experimented with a variety of bit depth formats and even lower ones for that matter. Long story short the JR displays very well what kind of source quality you really do possess. I also found it interesting (depending on the recording) that the AK JR, because it's DAC staging is really advanced and strong, can actually make a poultry 290kps bit rate sound somewhat bearable. I think that is amazing. I really love the Wolfson 8740 chip. It's my first experience with it and I think it's that of a great one. CD quality format in WAV or FLAC are full of life even in basic red book 16/44.1 or 48k.
The UI: yeah. I get it. It is more bare bones than anything else. I updated the firmware of course and I find that menu navigation is a little quicker, but overall I really don't have a problem with it. It's fine and it's highly functional considering how much SQ exist in this little sucker!! I do little cause the jr is very portable!! It is my best friend while traveling and hitting the streets.
Anyhow, once I get into around 40gigs of internal storage I will crab an SSD card, so I can maybe preserve a less lag experience with the UI ?
EQ'ing: now I experimented with this quite a bit and I feel that the 5 band EQ isn't not very sophisticated and maybe more tailored for IEM's than anything since the neutral setting is at -2 DB. Tried the pro EQ and it gives you slightly thicker low end, but your mid range gets a bit squished so I find nothing PRO about it...once again bare bones!
Above all, the Natural or normal (flat) non EQ setting is by far the best and I prefer it by far. The SQ is incredible.
Do I feel the JR is worth the price? Based on SQ alone maybe I do, but I think because the UI is more basic than anything else I feel the unit should be about 100$ less MSRP, however that SQ is huge on the jr!!
Internal amp. 1.95 VRMS into just 2 ohms does the trick I feel. I think the maximum headphone driving capabilities of the JR maybe around 75ohms and no more! I use the MDR' z-7's and they are 70 ohms and I hover around 64 to 72 on the volume attenuator and it goes up to 75 so I know The Z-7's just make the driving cut if you will. Anyway, a very nice pairing!!! I am absolutely loving it. Sure beats the crap out of my I pod nano paired with my FIIO e-17. It's actually a joke compared to the SQ of the JR.
So overall. I love the JR and I'm gonna keep it for a very long time. It's very revealing, accurate and easy on the ears even at higher volumes.
Lastly. Here are 5 albums I found to be an incredible experience with my Jr paired directly with the Sony MDR's at just 16/44 and 24/44 in WAV or FLAC.
1) fear factory-- Genexus
2) David Bowie-- Black Star
3) disturbed-- Immortalized
4) the Alan Parsons Project-- Vulture Culture
5) Hibernal-- Replacements (available on bandcamp.)
One more thing. I will be looking into getting a great pair of CIEM's to pair with the JR for ultimate portability and experience. I feel the jr could handle some nice CIEM's out there.