I'm simply looking for a cheap DAC/amp to use with my work computer on a $50 budget. It'll be used in a room that isn't secured and has people in and out 24/7, so cheap is required in case it gets damaged/stolen. This won't be for critical listening and will be mainly streaming audio. The integrated headphone jack on the machine is terrible and consistently hums and clicks. I'm looking for a simple USB DAC/amp that sounds decent but obviously won't be amazing on the budget. Ideally the amp portion would have a volume pot instead of buttons or a dial, but it's certainly not a requirement. I was considering the Pyle E7 clone but I'm checking my other options since I'd prefer a volume pot.
The amp portion should work well with efficient headphones. I'll be using 1964-Q and V-Moda M-80 at work, both are easy to drive at 25 and 28.5 ohm respectively. Any input or recommendations are welcome.