When you’re listening to your headphones on-the-go, you shouldn’t have to sacrifice a hi-fi experience—even when your headphones are hard to drive. With the XD05 BAL from xDuoo, you don’t have to. Packing a substantial 1,000 milliwatts of output power and a fully balanced circuit in a pocket-sized form factor, the XD05 BAL is a DAC/amp combo with no shortage of functionality, or fidelity. Connect your audio player of choice using a number of inputs—including a balanced AES input, as well as Bluetooth with support for aptX and LDAC codecs—and enjoy PCM sampling rates up to 32 bits at 768 kilohertz, plus DSD 512 decoding. Then, connect any pair of headphones in your arsenal to one of several outputs, including a 4.4 millimeter balanced output, a 6.5-millimeter single-ended output, and an auxiliary output. Toggle between two gain levels, monitor your settings via an onboard OLED screen, and get up to a full day’s worth of listening in battery mode. It’s a DAC/amp for any pocket, and any pair of headphones.