We posted a number of compatible op-amps over at our forum, along with charts for many of them. The selection and testing was done by Audio Note, (UK). Keep in mind that these were tested with the NU Audio Pro card, but I'm sure you'll find it useful...

I've seen a couple people report that, although I haven't experienced that here. Let me see if I can get an update for this problem by end of today.

It uses the Nahimic algorithm.

32Bit is correct. Thanks for checking!

Mainboard (NU Audio Pro): Line-Out: ADI AD8056 Headphone: ADI LT1469 Daughterboard (NU Audio Pro Surround): Rear: ADI OP275 Side: ADI OP275 C/Sub: ADI OP275

Think of it this way: EVGA NU Audio Pro 7.1 (AN21) = NU Audio Pro card (AN11) + NU Audio Pro Surround (AN10) Optical will always be a maximum of 5.1 as Dolby/DTS passthrough.

Pre-order is back up.

Well, apart as in it will make your system stand out. When I was told orange would be the NU color, I was a bit worried too. However, it's actually a really nice shade of orange, and I'm now partial to the color of it. Orange is the primary color, but the backplate is solid black, with white...

Yes, it's part of the Nahimic DSP, which can be toggled on or off.

Yes. The mainboard card (Pro) uses a SATA connector still. The daughterboard (Pro Surround) receives power through the PCIe slot and a mini-DisplayPort connector, which must be connected to the mainboard via a mini-DisplayPort cable.

Well, it depends on what you need. If you need the multi-channel analog surround, then yes, you'll need a minimum of 2x PCIe slots. If you just need the stereo version of the Pro, we will eventually be selling both cards separately.

Introducing the EVGA NU Audio Pro Cards The EVGA NU Audio Card reintroduced the PC world to high-end audio, both stunning the audio world and making new fans along the way. The singular idea of producing Lifelike Audio and Gaming at an affordable price led to an exclusive partnership between one...

We decided to run it back again at $149.99 for another weekend. If you missed it last week, here's another chance to get a NU Audio Card for a great price!

Unfortunately, the promotion is over now.

The price is wrong on Ebay; it should match Amazon. We're fixing it now. Nice catch.