Happen to be going to Shanghai, but sadly a few days after CanJam - perhaps someone has some suggestions: any headphone related shops or shopping districts etc recommended to visit, for those of us who can't quite make the dates?

ah yes, CX400-II may be interesting - lots of sales people, forum posts/amazon reviews and whatever claiming they are 'the same' as the now-discontinued CX500.. would also much appreciate a chance to listen to those AKGs..

ok put me down as confirmed, bringing: Grado RS1, Denon AH-D5000, Sennheiser IE8, Shure e5c (if I can find them), Sennheiser CX550 TianYun Zero DAC - this has socketed/swappable op-amps so if anyone wants to read up in the relevant thread and request any/bring their own then feel free (have...

long-time lurker/not attended one of these before - anyone who's been before can tell me what the deal is i.e. how many people likely to turn up, what you should bring etc? (headphones sure, but source-wise, music etc? is it mostly people who know each other from previous meets? and is it a case...

Just a ping to say I'm lurking and vaguely up for it (it's a bit of a trek, but you gotta make an effort once in a while eh ), just not too keen on the 4th as that's my birthday so I'm bound to be busy - urge to buy something is kicking in a bit and this time would be good to have a listen...

Quote: Originally Posted by Ash I know this off topic for all of you talking about op-amp swapping. I have a very basic question about the functionality of this amp/dac. I want to use it as a DAC/pre-amp to feed my A/v reciever - thru the analog out. In addition I want to use the...

Quote: Originally Posted by dantztiludrop I've been looking around online for the OPA627s at a reasonably decent price....where did you get yours' from? Ah, they were from Mr Wu at diykits - he even threw in a free browndog adaptor since I'd asked if he sold them - and it was the...

OK been away a couple of days so behind on reading the last few pages.. but just to say, I finally pulled the lever and ordered six OPA627s in metal TCO 99 package I've just stuck two of them in the DAC leaving my LME49720s in the headamp section - and I do have to say I've had my socks...

Quote: Originally Posted by TzeYang yes they can be interchanged. Here's an important keyword to remember: STABILITY. For folks who does not know anything about designing a circuit, it's best to just stick to stability than performance and use your ears to determine which one would...

Quote: Originally Posted by Penchum Exactly! I finally had to narrow down the choices for the DAC output first, then swap out the headphone amp until I had a decent sound. I'm beginning to think this is the "best" way to approach this Opamp rolling bonanza! One thing that was very...

Quote: Originally Posted by Penchum I wondered where you went! You bring up a good point. Every so often, it is worth your time to put the stock Opamps back in and just listen for a few days. It will bring perspective back into the Opamp hunt. Glad you are back, hope you find...

Quote: Originally Posted by Henmyr Are they still very hot? Is the noise gone still? I tried my LT1028 briefly, and as you say, they sounded very good. They were also very very hot, so I didn't dare to keep them in. Well I've got mine running for the second day continuously -...

Quote: Originally Posted by Normality Sounds interesting, thanks! Do you agree that the LME49720 is a better opamp that the LM4562? Yeah I would say so - beautiful highs, maybe a little cold but I kind of like it that way... though I guess I probably didn't spend enough time...

Quote: Originally Posted by Normality A few notes on some opamps mentioned: AD746 (dual opamp) - only suitable for the amp; much too little output current for the DAC. Interesting for the amp, however. AD827 (dual) - also little (but more at the threshold with acceptable) output...

Quote: Originally Posted by Normality Also, I have just ordered from National two LME49710 and two LME49720, all in the TO99 "metal can" package. I have sockets to solder the duals to, and twin-DIP Browndog adapters to solder the singles on. Looks promising Probably a...