I'm selling my Audio GD NFB (2016). It is in great condition, and works perfectly. I am the original owner. It has been a really good DAC/Amplifier for me. This is utilizing the ESS 9018, DSD , DXD support from USB & I2S Input (HDMI replace RJ45 I2S input), 32bit / 384K Sabre ES9018, 32bit / 384K Asynchronous Transfer XMOS U8 Chip, and upgrade TCXO for ES9018. The NFB-28 has balanced and single end outputs, and inputs. Puts out decent power, and works well as a preamp. It puts 8 watts into 40 ohms. Original packaging, power cable, USB cable, and the jumper kit for upgrading firmware. I will be posting pictures later on this week. It has been very good to me, but I have upgraded and no longer need it.

Here is the product page: http://www.audio-gd.com/Pro/Headphoneamp/NFB282016/NFB282016EN_Use.htm