About half a year after purchase, with only 12-15 uses due to a busy schedule, I'm selling this product as I'm parting with my horn. The photos from the 8th image onward are copied and pasted from the manufacturer. ◎ Accessories: All original items included, no missing parts! This product was released by Yamaha in May 2023. SB3J. Suggested retail price: 35,200 yen. It's a set consisting of a lightweight and compact "pickup mute" and a new "personal studio" equipped with Brass Resonance Modeling for a pleasant sound. I was very surprised when I first attached it to my horn and played. My biggest concern was "sound leakage." Surprisingly, the sound leakage was about the same as a person's speaking voice, and I received no complaints from my neighbors or even my family. The second thing that surprised me was the sound quality; the sound of the horn heard through the earphones was rich with reverberation, as if played in a large hall. I was so impressed that I thought those two points alone were enough. I bought this series because it became available at an affordable price. Even late at night after returning from work, I could enjoy playing the horn while listening to music on YouTube without worrying about the surroundings. Also, by connecting the personal studio "STJ" to a computer with the included USB cable, you can easily record your performance. Using this, it seems possible to enjoy participating in a performance with your horn on your PC, with the Berlin Philharmonic's chamber music as a background. 【Product Description】 A set combining the lightweight and compact pickup mute "PM3X" and the personal studio "STJ" equipped with Brass Resonance Modeling for a pleasant sound. The mute is designed for smooth and easy attachment and detachment. The personal studio has a wider range of reverb adjustment, allowing you to change the sound from a practice room with little resonance to a large hall with rich resonance, and you can easily connect it to a computer or smart device with the included USB cable to record your performance. Silent Brass is a pickup mute that is smaller, lighter, and allows for more freedom in playing, along with a personal studio equipped with Yamaha's unique Brass Resonance Modeling. By combining these two, it provides a playing experience that makes you forget you're using a mute. ◎ Two AA batteries are sold separately.