Ordered the A3 Pro 5/13. Got to reading about Sparkos... Ordered the J2S on 5/20. Haven't heard anything on either yet, but pretty excited.

Quick response. Item is essentially new, as described.

Messaged

http://www.amazon.com/Yamaha-EPH100SL-EPH-100SL-Inner-Ear-Headphone/dp/B00591GIMY/ref=sr_1_1?s=electronics&ie=UTF8&qid=1420685885&sr=1-1&keywords=eph+100 Don't scoff at driver size. These things punch and have plenty of rumble...

I've done the "bass mod" to my 702s(removing the sticker from the back of the driver). That alone was a noticable difference in sub bass. Since I also own the K550s I took the pad off of my 702s just to compare. A little foam disc fell out. Being in my inebriated state I figured sure why not...

I let a friend listen to his favorite tracks through my PS500s and the Asus EOne. After a couple minutes of head bobbing he handed them back to me. "I can't listen to these any more, they'll ruin my headphones for me." :D

On the same screen where you changed bit depth from 16 to 24/32 try changing the latency. I used to have this issue. My sweet spot ended up being 20ms, YMMV.

Both are unity gain stable, therefore no oscillation.

The bass is clear and solid. It will satisfy all but the extreme bassheads. The only thing you might notice is the treble can be a bit bright on some songs.

The E1 should not get hot if you're using it with the stock opamps. I'm running AD797BRs in the I/V and LPF stages with OP627BMs in the headphone buffer. Mine gets warm, but I also installed a vent fan. In addition I have an E1 from the first production run with the "unbalanced" volume pot...

Quote: I'm using .22uf across pins 4&8, but .1uf works as well.

I'm now running AD797Bs with decoupling and decompensation capacitors soldered on in the I/V stage, AD797Bs with decompensation capactitors in the LPF, and OPA627BMs in the buffer stage. The AD797Bs are stable and run warm, but they're designed to. The 627s remove the hiss that I was getting...

Quote:Originally Posted by turokrocks  Bad news guys, the Headphone volume knob of the new unit is making a scratch sound!!!!  something is in friction/contact....What is going on...? The old unit's volume knob is smooth but got his heavy feeling while turning, but the one in the new...

Don't know if this question has already been answered but: Where does Asus state that this jumper should exist? Is it in the manual or somewhere on the website that I'm missing?

The best way I've found to remove ICs, both at home and in my former profession, is to use a small flat head screwdriver. Place it underneath the chip and twist a little. Swap to the other side and do the same, repeat until its almost out of the socket and you'll be able to remove it by hand.

Quote:

Quote: I got my E1 when they were first released and mine has black pcb, not that the color makes any difference in quality.

Quote: AudioJade is actually where I got them from. Funny that.

Quote: The BM is a metal can, the AU is not. To my ears the BM is slightly superior in every way to the AU.

Quote: I tried out my LME49990s with the AD797Bs again. I even equipped the rest of my AD797Bs with decompensation capacitors to run a full AD797B setup. Then went back to OPA627BMs in the LPF and OPA627AUs in the buffer. The 627s just make it sound more relaxed than any other combination...

Quote: The LME49990 oscillates more than the AD797 in any slot on the E1.

Quote: The only place I've gotten the AD797 stable is the I/V stage, and that's only after I added a few capacitors to calm it down.

Quote: Just to clarify, on my E1 it is only present when you move the knob without any audio playing. However it still indicates that the opamp is not happy being there.

Quote: Careful, the AD797 oscillates like crazy in the buffer slot. When you put it into the headphone buffer play with the volume knob and you'll hear a whooshing sound.

@Whit3Rav3n, I'm currently using the AD797Bs with OPA627BMs in the LPF and OPA627AUs in the Headphone and RCA Buffers. With the 627s its like someone articulating their words more to get the point across, whereas the 49990s would be like raising one's voice to do it. To me both have around the...