Most digital devices that play music (your smartphone, a CD player) have DACs inside of them, and these days, they generally work fine. What about a DAC?Ī DAC stands for Digital Analog Converter and it essentially takes a collection of ones and zeroes and turns it into audible sound.

In fact, when it comes to low-end frequency reproduction, current matters more than voltage. That way, the drivers may move with enough force to reproduce an adequate measure of bass. In order for that to happen, the amount of current needs to be appropriate. It’s not just about loudness, though, you want everything to be amplified uniformly. Even then, you only need a few volts for high-impedance headphones to get dangerously loud. Generally speaking, high-impedance cans require greater voltage, while low-impedance cans require greater current. Power measurements are derived from voltage and current (mA). So take what you will, but I am a huge fan of the 900X's for their directional audio, its absolutely immersive.A base understanding of amplifier requirements may lead you to believe that the only relevant number is voltage (Vrms), but that’s only painting a partial picture. These are easily better sounding and more comfortable than the beats studios and Bose quietcomfort I own. The bass is the 900X's is perfect to me, not overpowering, but accurate and definitely noticeable. Last note: I heard that the bass is really lacking on the 700X's, thats why I went with the 900X's. Another thing to note is that i have not tried the other headphones youve listed, but I have heard that the Sennheiser are good, but nothing to go crazy about, and Ive heard great things about the Beyerdynamics, but havnt tried them myself. They are really conformable as well, so thats always a plus. FPS games are great with these, as is music and movies. The one thing that sucks is that since they are open back, you can hear outside noises fairly easily, so if you live in a noisy environment you may need to think about that. You really can sense where shots or footsteps are coming from due to the soundstage being HUGE since they are open back headphones. I just got the ATH-AD900X off of ebay for like 130 bucks.

Audioengine d1 dac hd 598