Pro-Ject - Head Box S2 Ultra-Compact Micro Desktop Preamplifier

I offer here a Head Box from Project
The Project Head Box S2 is a compact, high-performance analog headphone amplifier designed to drive any pair of headphones with high clarity and power.
Key Features:
Output Power: delivers 725 mW to easily handle demanding headphones and allow for high listening volumes.
Headphone Outputs: Features two front-mounted jacks—a 1/4-inch (6.35 mm) for traditional headphones and a 1/8-inch (3.5 mm) for modern earphones. Both can be used at the same time.
Inputs and Outputs: include one RCA analog input and a RCA loop-through output to pass the signal to another amplifier.
Build Quality: Built inside a solid aluminum enclosure that protects against electromagnetic interference and vibrations.
The Head Box is in very good condition