For the very first time, iFi is tapping into the sub-$150 market with the release of ZEN series. Zen DAC is more on the traditional side, a barebone DAC/AMP sporting a USB port, 2 RCA outputs and one 4.4mm balanced output. The front panel sports a 1/4'' jack, a 4.4mm balanced jack, a gain switch, a bass boost button and a potentiometer. There is an optional 5V DC input if you wish to kick its performance up a notch. Zen Blue on the other hand supports Bluetooth and optical inputs. The front panel design is more in line with iFi's more premium offerings and a 5V switching power supply is included with the unit. I bought the ZEN DAC at Audio46 one day after its release, and the staff there told me their 10% off coupon code does not apply because of the thin margins. Here I present to you my unboxing video! Edit: Forget what I said about coaxial inputs in the video. Neither model takes coaxial.