Fiio K9 Headphone Amplifier, iFi Audio Noise Filter, and Other Set

This is a Fiio K9 headphone amplifier with an iFi Audio USB noise filter and a Furutech USB cable, plus an aftermarket power cable. It was placed on top of my computer, so there are no noticeable scratches. The original box and accessories are included, but the genuine power cable is missing. I will include the 3-prong power cable I've been using and a spare 2-prong cable.

The difference in sound clarity and power when listening directly from a PC versus using this headphone amplifier and filter was significant. The filter alone costs over 10,000 yen. I've decided to sell it as I only use it occasionally at night and primarily listen through a soundbar now.

I would appreciate your understanding that this is a used item.
It is also listed on other sites, so it may be suddenly removed.
This is the Fiio K9, not the Fiio K9 AKM. The K9 listed previously has already been sold.
The K9 uses an ESS DAC, while the AKM uses an Asahi Kasei DAC. The ESS DAC has a sharp, high-resolution sound with punchy bass, while the Asahi Kasei DAC has a warmer sound with less emphasis on the bass, allowing vocals to stand out.
Price negotiation is possible.

Fiio K9 FIO-K9-B
Manufacturer Information
https://support.fiio.jp/hc/ja/sections/34251241812377-K9