The One Control Dyna Red Distortion 4K is a distortion pedal based on the legendary BJFE "Dyna Red Distortion," with further adjustments. The main unit comes with a box. The manual can be found on the website via the QR code printed on the box. There are no apparent issues with the operation. I believe it's in beautiful condition as I haven't had many opportunities to use it. It has been stored in a smoke-free and pet-free environment. This pedal features a dynamic and harmonic "plexi"-style sound, allowing for a wide range of sound creation, from crunchy low-gain to heavy, gritty distortion. The newly added PRESENCE control, when combined with the Treble knob, allows you to create a shimmering yet ear-friendly tone. Furthermore, when the DRIVE control is set past 12 o'clock, it produces an aggressive distortion sound characterized by clear tones and long sustain. It pairs well not only with tube amplifiers but also with clean solid-state amplifiers, offering dynamic control similar to that of a tube amp. Thank you for looking. Best regards. Type... Acoustic Guitar Type... Electric Guitar, Effects Pedal, Distortion, Overdrive, High Gain