To those who connect a DAC to their PC's USB port: Have you ever been bothered by subtle "hissing" or "buzzing" noises? Or, do you feel limited by your audio setup, thinking, "The sound should be clearer..."? That problem is actually caused by your PC. The inside of a PC is a source of noise, and the USB cable carries not only the music signal but also that troublesome noise to your DAC. This "FX-D03J+" was born to solve that fundamental problem with a single blow, a "behind-the-scenes hero" in the PC audio world, and a must-have item for those in the know. ▼ What "miracle" does this small box bring about? This unit receives the noise-filled USB signal from the PC and extracts only the music data purely. Then, it converts it into a "pure digital signal like a clear stream" completely isolated from noise and delivers it to your DAC (with coaxial/optical input). ▼ What "changes" will happen to your ears? The arrival of complete silence The space where there was noise will change to a profound "silence." You can experience the breathtaking stillness before the music begins. The veil of sound is lifted All the details, such as the subtle breath of the vocals, the movement of fingers plucking strings, and the lingering echoes of fading sounds, which were buried in the noise, will appear before you. The sound image stands out clearly The sounds don't clump together, and the position of each instrument is clear. A three-dimensional and realistic soundstage, as if they are performing right in front of you, will spread out. The more expensive your DAC is, the more dramatic the effect of this FX-D03J+ will be. Now, unleash 100% of the original performance of your DAC. 【Product Condition】 I used it with care, so it is in beautiful condition with no noticeable scratches or stains. Of course, the operation is also completely problem-free. 【Reason for Listing】 Due to a change in my audio system configuration, I would like to sell this masterpiece to someone who needs it. With this small investment, your audio environment will change incredibly. Please, experience this "awakening of sound." #DDC #FXAUDIO #NoiseReduction #HighSoundQuality #PCaudio #USBDAC #Audio #DTM