Purchased around March 2025, but never assembled on a board (due to personal preference), so I am selling it. It was purchased new, and the period of use was short, so it is in very clean condition. However, please understand that it has been handled by a person once. A smooth, convenient carrying bag, which was a bonus at the time of purchase, is also included, allowing you to carry this product lightly, such as by putting it in a soft case. Quoted from the ONE CONTROL official page below: ● Features ・Bass preamp that creates the sound of an upright bass ・BRILLIANCE control to control the overall brightness of the tone ・GAIN control to control the hotness of the sound ・Can also be used as a preamp for electric violin ・High-quality mini-size case made of machined aluminum ・Battery can be installed ・True bypass switching Input Impedance: 650k Output Impedance: 25k Operating Voltage: 9-15V Current Consumption: 1mA @9V S/N Ratio: 80dB Size: 39W x 100D x 31H mm (excluding protrusions) 47W x 100D x 48H mm (including protrusions) Weight: Approximately 160 grams (200 grams with battery inserted) *Batteries are not included