I purchased this about two years ago. I've confirmed that it works. I'm selling it because I rarely use it. The retail price was 9,900 yen at Soundhouse. I will pack it with bubble wrap before shipping! ■ Mini amp for bass ■ Output: 3W ■ Speaker: 3" x 1 ■ 2CH (Clean, Overdrive) ■ MP3 line input ■ Compression control equipped ■ Emulated out terminal useful for recording and headphones ■ Power: Battery operated (6 AA batteries), optional power adapter (BS FLY-PSU) ■ Size: 17.0W x 12.6H x 10.2D (cm) ■ Weight: 0.9kg