About the TOPPING DX1 II
From the product page on linsoul.com.
The DX1 II is a versatile DAC and headphone amplifier combo that connects via a single USB-C cable to your computer or tablet. It delivers studio-grade sound for music listening and competitive gaming alike. With both 3.5mm single-ended and 4.4mm balanced outputs, plus support for TRRS headsets with microphone, the DX1 II transforms any desktop into a high-performance audio hub.
Ten-Band High-Precision PEQ – Tailor Every Frequency
Built around a powerful DSP engine, the DX1 II supports up to 10 fully customizable bands of parametric EQ. Using the TOPPING Tune software, you can precisely adjust frequency, gain, and Q factor, with independent left/right channel control. Import target curves, generate compensation, and save up to 3 profiles for quick switching. The TOPPING Home Web platform further simplifies tuning with a drag-and-drop visual PEQ interface, letting you apply community-shared EQ files with one click. Whether you are tuning footsteps for FPS games or smoothing room modes for speakers, the DX1 II gives you surgical control over your sound.