Oddball

For god sake, let sound cards die already. They are trash in the analog sense.

it would actually half the impedance (not resistance as we are dealing with AC not DC) not double it. And it would lower quality if the amp has a significant output impedance as the impedance of two headphones is half of one headphone the damping factor is also halved which leads to "poor bass control" or "flappy bass" as well as *insert audiophile buzzword here to describe shitty bass*. Its important to remember to 1/8th rule with damping factor. Meaning the source impedance must be 1/8th or lower of the load impedance for good damping factor. Quick note about impedance vs resistance. Resistance is a simple number, such as 10, which indicates the DC load of a circuit. Impedance is a complex number, like 10 + 2i, which indicates both the DC load (resistance) and the AC load by capacitors and inductors (reactance). The nominal impedance of your headphones is called impedance and not resistance for this reason. Its also why if you try to use a multimeter to measure the impedance you won't get the nominal value as most meters only measure resistance not impedance.

0$ They are pretty much rubbish for headphones.

Sound cards are not worth the investment. In most cases with most headphones sound cards (especially the ones with the shitty "amped" outputs) make headphones sound worse than onboard

Bro you need a 556 for stereo operation!!! Also You need a 10nF capacitor between control and ground for proper operation

Not arguing that low output impedance is good for damping factor. Perhaps rolled off is the wrong term but you get the idea. Also its general electrical engineering 101 what I stated above, low impedance needs high current, high impedance needs high voltage for the same power disipation at the load.

Note that it has a very high peak at 100 hz. So while an amp might have enough voltage swing at 10 hz or 1000 hz, at that 100 hz mark it won't have the voltage swing, (aka voltage gain) to get the peak power out of the headphones at 100 hz, leaving other frequencies just as loud but 100 hz is rolled off. Power is voltage * current. Increasing one or the other increases power. Its very possible for an amp to be able to drive 16 ohms just fine (lots of current, seen in emitter follower designs) but not have the voltage swing to power something in the 600 ohm range. The inverse is also possible where an amp has a high voltage gain but low current gain and can drive 600 ohms all day but will not have the amperage capability to drive anything down to 16 ohms. These two amps could have the same power rating because of P=VI where P is power V is voltage and I is current. Low output impedance is a very nice thing to have but its not the only thing to have. You could have practically zero output impedance and still have shitty sounding music due to headphone impedance changes vs frequency. More power, be it more voltage gain or current gain is always good. It means the amp always has enough balls to drive low impedance loads and enough voltage to drive high impedance loads. The reason headphones have different impedance at different frequencies is because headphones, and any loud speaker has resistance and reactance. That is, it has some capacitance and inductance which are very dependent on frequency.

the PC360s are very close to 555 hds, same driver. Slightly more intrusive bass but great headset overall.

Are you using front panel connectors? In that case its more than likely EMI, using electrical tape to stop ground loops by ungrounding your case is a very bad idea.

You can get the WASD CODE keyboards with cherry mx clears (what I have) and mx greens. They are backlit and come in 10 keyless and full sized versions. product page: http://www.wasdkeyboards.com/index.php/products/code-keyboard.html amazon link: http://www.amazon.com/s/ref=nb_sb_ss_i_0_7?url=search-alias%3Daps&field-keywords=code+keyboard&sprefix=code+ke%2Caps%2C220

Two things about those splitters: 1: You must use the same pair of headphones or else you can get voltage drops at different frequencies than normal making audio sound like garbage on both headphones 2: If you have the same headphones then the overall impedance is halfed. That is if you have two 32 ohm headphones hooked up, then the impedance is 16 ohms, as such you need a beefy amp for some cases that also has low enough output impedance.

C and assembly, I'm old fashioned. By "assembly" I mean: x86 assembly MIPS assembly AVR assembly 6502 assembly (C64 processor) Z80 assembly (pretty much the same as 8088) Anything home made processor ive made on perfboard/FPGA

Beware those built in headphone amps on soundcards and motherboards often have very high output impedance. I honestly just wish there was like a relay or something inside the multiplex between the amp when using 100 ohm or higher headphones and the built in amp in the codec when using 100 ohm or less headphones.

I wondering why linus hasn't reviewed these keyboards yet? Only place where you can get a brand new model M replica. http://www.pckeyboard.com/ http://www.pckeyboard.com/page/category/UKBD The "classic" model: The "ultra classic" model: You can even get the PC 122 key IBM keyboards there. Also you can send in your keyboard even after the waranty has gone and get it repaired for 30 USD. They come in USB or PS2 versions, with or without windows keys, mac OS versions and all keycaps are two pieces meaning the key and the actual lettering are different parts. This makes it interchangeable with original IBM model M keys. You can also order custom keycaps directly from their site including a blank set. I would love to see these keyboards in a LTT review someday.

I don't know what the caps are, the text is all gone