iFi Audio Zen Dac is a compact, desktop usb dac and balanced headphone amp. Improve the sound from your computer or phone, via the usb input, out to your headphones. iFi Zen Dac takes a digital signal via usb input and has 2 line outs on the rear panel - rca and 4.4mm balanced; it also has 2 headphone outs on the front - 6.5mm and 4.4mm balanced.
Perfect with Sennheiser HD660s, which includes a 4.4mm balanced cable. USB powered, optional 5v power supply in our accessory section.
Whathifi: 5 Stars: Compare the iFi with price rivals and it’s clearly up there with the best when it comes to sound quality. But it also offers a degree of versatility that those rivals don’t. If you’re looking for a well-built, budget desktop DAC, this iFi should be top of your list.
Techradar.com: 4.5 / 5: The iFi Zen DAC is an excellent DAC and amp for the price... sound from the iFi Zen DAC is excellent, providing enough power for power-hungry headphones like the HD600 and DT1990Pro that we used to test... if you’re looking to squeeze out a few extra drops of performance, the optional iFi power supply is worth purchasing.