pegasus21

Interesting. I didn't think there'll be a thread like this over here too. So you're suggesting during the term itself?

I don't think this is an auction as the forum does not allow that. If you want to negiotiate, contact the seller direct. MOD EDIT: Thank you, pegasus21. All posts with bids will be deleted.

The part about the input impedance of the amp is almost right. The ideal impedance should be infinite. In practice, this is usually in the order of KOhms or MOhms. Output impedances are usually around 10 Ohms. The part about the amp giving enough current is right assuming you have sufficient voltage to power the transducers. The voltage would be heard in terms of volume. Impedance matching is mostly for maximum power transfer which isn't so critical for sounding good. Basically just means more efficient and thus less power wasted. Although there are some amps that require a certain range of headphone impedance to sound good. Usually people buffer the output so as to prevent that from happening.

They are all the same. The non 'Z' version is not ROHC compliant. This means that it contains lead in it. This makes no difference to you unless you want to export the device to the UK. Even so, get the 'Z' version as it's ROHC compliant and cheaper. The 'AR' version is the surface mount version. While the 'AN' is the dual inline package type which can be used in a socket. If I remember right, the amp can take the socket type so get the socket type. Just check if it can take single or dual opamp per package.

It seems like Farnell has the said opamp in stock at about $14 per piece. You might want to try them. http://sg.farnell.com

If you can, I think investing in a hand drill would be good.

Sold.

Really seems limited considering that the board only uses 5V. http://www.instructables.com/id/EAZDF6J2S5EPA8L4K4/ Anyhow, for those who are really want to try out SOIC based amps, I guess this is one way to test without having to solder the SOIC. I'll say that learning to solder that SOIC allows you to roll the opamp in your amp is a better idea.

Take a look at TI's site. http://focus.ti.com/docs/toolsw/folders/pr...pevm-sot23.html It's a PCB to do testing on. To evaluate the requirements and such. It's not so much for usage in an actual amplifier.

Thanks man. I can't find the edit button so the update is that the amp is reserved pending transaction.

For sale, a black Little Dot Micro+ with normal gain from the 4th MO. Will come as I bought it. The box, LDM+ itself, the IC it came with and the adaptor. There is a scratch on the knob so it's not for perfectionist but soundwise, it's not affected by the scratch. SMS me at 98383625 to quote me an offer. Thanks.

I don't think you need such a module. Just take the opamp and either solder it to a browndog adaptor, solder the ic to the board or plug the opamp into a socket (assuming it's DIP already).

I see. Thanks for clarifying.

Bank wire isn't the same as credit card right? Wouldn't credit card be easier?

Hardly a point since the shipping has to go through VpostUSA. Then if you're over 400 there's GST charges too... 1 set shipped might escape the GST... Unless there's cheaper shipping? VpostUSA charges about S$39.96 for this item if I'm not mistaken.

1) NCMK X1 2) Cruise X2 3) decrypt X1 4) sHaRkKaE x1 5) sweattt x1 6) Don x1 7) soundcrave X 1 8) pegasus21 x 2

Should be able to get the GoVibes or the Xenos. If you can find a 2nd hand one with good ICs thrown in, shouldn't be a problem with the budget. Take a look at this one... it's a steal for that price. http://www.sgheadphones.net/index.php?showtopic=6695

Just as I thought. MS1 and K81 are two different beasts. Welcome to Team Alessandro.

These wouldn't be fakes by any chance would they? I've seen reports on head-fi about fakes coming mostly from China and listed as OEM. Buyers beware. http://forums.hardwarezone.com/showthread....10#post21263410

Have you heard the k81? I've heard it's really different from the MS1.

Oh yea forgot the 6171/6172 opamp.

I don't know much about the AT sound signature but from what I know, they tend towards the brighter side unamped. I've owned a PX200 before it's supposedly similar to the PX100 except it's closed. It's a more bassy headphone. It's quite different signature. Best to go find a shop that allows you to test the said phones and make a decision based on what you hear. The iGrado would be more towards the AT side.

It's based on the CMOY with some improvements. If I remember correctly, the addition of the buffer stage opamp is the main difference. This means that the number of opamps needed is 4 instead of 2 in the CMOY. There's also a virtual ground. Correct me if I'm wrong.

From what I see, it's hanging in the balance right now since the person who can get a good price on it isn't around.

You really should post a budget. Without a budget, we could just suggest the king...