This is a no-brand wooden oboe. It's a fully automatic, fully equipped instrument. The pads and balance have been adjusted to ensure proper sealing. However, the response in the lower register just wouldn't improve, and after days of trial and error, and hours of work, I couldn't get it to a quality I was satisfied with. Therefore, I'm listing it as a "defective item." It's likely that the problem isn't related to adjustments, but rather to issues in the design stage, such as the bore diameter or the position of the tone holes. For the record, the entire range can be played with some adjustment to the embouchure. It might be possible to play it normally by selecting the right reed, but I couldn't sell it as "repaired," so I'm listing it in this condition. Originally, it was sold on a Chinese shopping site for around 130,000 yen. The adjustments are better than when it was new. It is possible to produce sound, so I'm offering it to those who are interested, for light practice, modification, or repair research. I must emphasize that this is a "defective item," so please be aware of that. Price negotiations are welcome. No returns. I will do my best to assist with adjustments after purchase.