BOSS GT-1 multi-effects processor, with power adapter and textbook. The manual can be downloaded from the BOSS website. - Model: GT-1 - Included: Power adapter - GT-1 textbook - Adapter type: BOSS PSA adapter Used for about a year after purchase, I stopped using it after buying a GX10 to pursue more sounds. Of course, the GX can produce deeper sounds, but as professionals say on YouTube, the GT can also produce sufficient sound (I think it depends on how you use it). Thank you for looking.