Full Music PX4 Vacuum Tube Amplifier Single-Ended Amplifier

This is a single-ended amplifier using the PX4 PX4/n from Fullmusic.

It's a beautifully crafted amplifier housed in a Luxkit A3000 chassis.

This amplifier was not built by me, but by someone else.

Power transformer: Luxman 8A54
Output transformer: James JS-6113HS
Choke coil: Lux TYPE 4620

Measurement results are included.
Please check the images for output and distortion.
A power cable and bonnet are included.
A circuit diagram is not included (it was not provided originally).

The PX4 is famous as a European vacuum tube with a very low rp, and is often mentioned alongside the 2A3 and 300B. I personally heard it for the first time with this amplifier.
Indeed, it has a sound characteristic of directly heated triodes.
It has a different atmosphere than American tubes, with a distinctly European sound.

Personally, I find the noise during silent passages to be a bit high, but this may be unavoidable with AC filament heating for directly heated triodes.
Please be sure to check the video.

https://youtu.be/qvZEklb3v9M?si=-54B5LFfm-wqecdn

As this is a personal listing, please understand that after-sales support and detailed questions cannot be accommodated.
Matters involving subjective judgment, such as noise during silent passages and external scratches or dirt, can lead to discrepancies.
Please be sure to review the description, video, and images, and only purchase if you are satisfied. In principle, all sales are final: no claims, no returns, no cancellations.
Please refrain from purchasing if you are sensitive or expect the condition of a new product from a manufacturer.
This item is for those who understand used, custom-built, and vintage products.