■ Items for Sale ・YAMAHA Amplifier DSP-A1 Junk Item ・Remote Control I don't have any equipment to connect to it, so I haven't been able to thoroughly check its operation. The known issue is that the LCD display likely doesn't show anything. When I checked for power, orange characters briefly appeared, but then disappeared, and haven't reappeared since. Also, as shown in the photos, the rear part of the left side cover is slightly shrunken. Currently, I have confirmed the following functions using the remote control, but I haven't been able to test anything else, so please understand that this is a junk item. ・Power on/off ・Mute function on/off ・Volume adjustment ※I have confirmed that the lamp on the right volume dial of the main unit lights up and rotates without delay when using the remote control for all of the above. Returns are not accepted after purchase, so please ask any questions you may have.