4 input usb audio interface

Most 4-input USB interfaces advertise 24-bit converters with sample rates up to 192 kHz. Some DJ-oriented models list 24-bit/96 kHz, and at least one model specifies 32-bit integer operation at 192 kHz.

Some interfaces include MIDI In/Out for external controllers and synths. Many also provide driver-based or hardware loopback channels that route computer audio back into the host—useful for streaming or podcasting so you can mix system audio with live inputs.

Yes—many provide hi‑Z instrument inputs on their combo XLR/TRS jacks (labeled mic/line/hi‑Z or mic/line/instrument). It's common to see two instrument-capable combo inputs on these units.

Common outputs include a headphone jack plus balanced 1/4" TRS monitor outputs and sometimes unbalanced RCA outputs. Many units also include monitor-routing features—selectable monitor pairs, dedicated studio outputs, and configurable headphone/monitor modes—to control how inputs and computer audio are sent to speakers or headphones.

Some interfaces are bus-powered over USB and draw all needed power from the host, while others provide a USB‑C DC input that supports Power Delivery. Available options vary by model: bus-powered units are more portable, whereas PD-capable units may accept external USB‑C power for higher current or to power connected laptops.

Manufacturers reduce latency with optimized low-latency USB drivers and fast converters, and by offering latency-free options such as onboard DSP monitoring or direct hardware monitoring and mix controls. Some product pages also list measured round‑trip latency specs.

Bundles often include DAW/production software licenses, virtual instruments and sample/loop packs, and audio plug‑ins. DJ-focused interfaces may include DJ/DVS software unlocks or license keys instead of production suites.