I recently bought a Logitech USB headset and I want to use the Realtek HD audio manager for its equalizing capabilities, but it's like my USB headset doesn't exist. It only recognizes peripherals connected to the audio jacks. I tried SRS audi sandbox, but that doesn't detect my headset either. Is there anyway I can fix these problems or is there any kind of system wide equalizer that works with USB headsets?
USB headsets have their own onboard DAC (Digital to Analog Converter). Your Realtek doesn't see it because it really has no clue its there what USB headsets do is it grabs the digital signal from the USB port and processes it via its own soundcard so the only adjustment that can be made is via the Logitech controls.