Fostex PC-100USB-HR-2 Hi-Res USB DAC and Volume Controller

Fostex PC-100USB-HR-2: A Real Volume Knob for the Desktop

The Fostex PC-100USB-HR-2 is a desktop volume controller with a built-in hi-res USB DAC, made for the listener who wants a physical knob instead of a software slider. Connected over USB, its converter handles playback up to 24-bit/96kHz across the common studio sample rates, feeding a clean analog signal out to monitors or headphones. Because it draws power from the USB bus and needs no driver on PC or Mac, it is ready the moment it is plugged in. For a desk built around a computer, it restores the tactile control a mouse took away.

Fostex PC-100USB-HR-2 Conversion and Resolution

Inside the compact chassis, the DAC supports sampling frequencies of 32, 44.1, 48, 88.2, and 96 kHz at 16- or 24-bit depth, covering standard and hi-res material alike. Bypassing the computer's own audio output moves conversion outside the noisy interior of the machine, where a cleaner result is easier to achieve. The signal then reaches the outputs at a nominal level suited to powered monitors. The point is simple: better sound with less between the file and the speaker.

Fostex PC-100USB-HR-2 Outputs and Control

A pair of RCA line outputs sends the converted signal to powered monitors or an amplifier, while a 3.5mm stereo headphone output delivers up to 30 mW per channel into a 32-ohm load for private listening. The oversized volume knob dominates the top panel by design, giving the hand a large, precise target for setting level. Turning it feels like operating a controller rather than nudging a slider. That immediacy is the whole reason to put one on the desk.

Fostex PC-100USB-HR-2 Setup and Use

Setup is deliberately minimal: a single USB cable carries both audio and power, so there is no wall adapter and no software install to manage on Windows or Mac. The small footprint tucks beside a keyboard or monitor stand, keeping the knob in reach without eating desk space. For a home studio, a computer-based hi-fi rig, or a second listening position, it is an efficient way to gain hi-res conversion and hands-on volume at once. It does one job and stays out of the way.