Thank you for viewing! KORG ER-1, Rhythm Synthesizer Released in 1999, this is a classic synthesizer from the ELECTRIBE series, capable of creating drum sounds with a synthesizer and equipped with effects, allowing you to create original rhythms from Kraftwerk to hip-hop. No box, no manual, but a copy of the manual is included. Although there is no AC adapter, I will include a BOSS AC adapter PSA-100 (new, tested to power on). There is some crackling when adjusting the volume, but it doesn't occur during performance at the moment. The photos show the unit only. There is aging, scratches, and dirt. (See photos) As shown in photo 5, there is a scratch-like mark on the number display when illuminated. In my amateur opinion, it's in fairly good condition. This item comes from a smoke-free and pet-free environment. To prevent swapping, returns and exchanges are not accepted. Please purchase with understanding. This is a 26-year-old item, so please consider this if you understand synthesizers. Thank you for viewing! #KORG #Vintage #EA1 #Synthesizer #ELECTRIBE Thank you for viewing.