Everything You Could Ask For In A Desktop DAC/AMP?
The new FiiO K9 Pro ESS is a big step up from the previous K5 Pro ESS according to TechPowerUp, and from what they discovered in their review that seems to be an accurate assessment. It is capable of accepting digital signals from four different sources including 4.4mm, coax, optical and even Bluetooth LE with the included antenna. You could also chose to go with analog, if that is your preferred input. There is also USB, of course. The outputs include balanced XLR, a 4.4 mm port with a single-ended 1/4″ jack and balanced analog coax as well.
The FiiO K9 Pro ESS contains two ESS Sabre Pro ES9038PRO digital-to-analog converter chips, each with their own Texas Instruments OPA1612 low pass filters and THX AAA 788+ linear amplifiers. You can also toggle the output as a basic DAC, a preamp for powered speakers, or a fully amplified DAC to drive headphones.