Electro-Harmonix MEL9. It transforms the input sound into a Mellotron sound and outputs it. It also supports chords and I think the response is quite good. The tone is also quite thick, and by mixing it with the original sound, you can add depth and a vintage feel. Purchased as a used, fully functional product, only tested. There is some wear and tear, so please check the images and purchase with your understanding. The MEL9 Tape Replay Machine emulates vintage Mellotron sounds. The MEL9 features 9 presets: Orchestra, Cello, Strings, Flute, Clarinet, Saxophone, Brass, Low Choir, and High Choir. It allows you to transform your guitar sound into those sounds without adding special pickups or modifications to your guitar. ■ Guitar Effects Pedal ■ Tape Replay Machine ■ Controls: DRY VOL, EFFECT VOL, ATTACK, SUSTAIN, Preset Switch ■ DRY/VOL knob allows adjustment of the original sound and effect sound ■ Power: DC9V ■ Current Consumption: 100mA