The buffer IN is located on the top of the enclosure. The LED lights up blue when the power is turned on. There is no problem with either the IN (OUT) for the Through IN/OUT. You can freely arrange it according to the needs of your effector board. 【Specifications】 ・Case: 39 x 92 x 31mm ・Power supply: Center minus 9V ・PtoP wiring using a universal board ・Junction box: 2 Loops 【Customer Reviews】 "I think it's great that you can build something like this. It works well. ^_^" "I repeat because it does a great job." "The sound quality has improved and is wonderful." "It's been decided to be included in the main board. Thank you." "The sound has become surprisingly good!! The sound image is clear and has a vibrant and alluring sound! It's truly wonderful! Thank you very much!!" This compact junction box houses the buffer section of the Kentaurs, which is reputed to make the sound better and thicker just by passing through it. It allows you to consolidate the inputs and outputs of your board in one place, helping to prevent jack damage caused by plugging and unplugging. Since the buffer circuit is passed immediately after the input, it can be made compact without preparing a separate buffer. It is intended for continuous use, so there is no ON/OFF switch. As expected of a masterpiece. You can see why professionals are using the Kentaurs buffer. I tried it before the vemuram Jan Ray (Jan Ray) and the sound became thicker, the cutting became sharper, the dynamics of the clean sound with a moderate amount of distortion components increased further, and it feels very good to play. Overall, it gives the impression that the sound becomes more vibrant and energetic. You will feel the effect more as you play louder or as the number of effectors increases. A buffer is not a piece of equipment that can achieve a dramatic change like a distortion effector, but it is recommended for those who use multiple effectors, those who are concerned about sound degradation or noise, those who have long cables, and those who want to improve the sound of their effectors. Basically, it is intended to be connected directly after the guitar and used constantly ON. *This is a piece of equipment that is difficult to understand the effect on the hearing, so we recommend that only those who have knowledge of buffers purchase it.