The EF499 Desktop DAC and Amp Features Classic HiFiMAN R2R Sound, in a Sleek, Compact Package New R2R DAC design, a perfect match for HiFiMAN's detailed resolving headphones Boasts 4.35W of balanced power output Supports a number of streaming options for lossless wireless connections DAC and Headphone Amplifier with Streaming Features Not only does EF499 provide the pure sound of a HiFiMAN R2R DAC and up to 4.35W of power output, it's ethernet connection allows for lossless streaming from your mobile device or an NAS. The DAC is a new R2R design, based on HiFiMAN's beloved HIMALAYA R2R, providing a similar level of reference sound. Like it's big brothers in HiFiMAN's lineup, EF499 provides High and Low Gain options for the amplifier output, along with Oversampling or Non-oversampling (NOS) DAC processing options to let you find the sound that's best for you. Desktop Versatility For the standard DAC, you can connect via USB-A, USB-C, or digital coax, providing compatibility with a number of devices. Similarly, you can output to RCA or XLR, meaning EF499 can work with an external headphone amp or power amp.