Chosen Solution
What is the impedance range of the headphone jack?
Your system requires low-impedance headphones in the range 16 to 32 ohms. If you want to use a set of high-impedance headphones which are in the range of 100-600 ohms you’ll need a USB DAC converter to get the best performance. Here’s one we have been using: FiiO E10K Olympus 2
