Guitar compressor for sale, as I bought a new one. ・"LEVEL" for volume adjustment ・"COMP" for compression adjustment Powered by 9V, true bypass. Velcro tape is attached to the back. Used at home. 【What happens when you use a compressor on your guitar?】 It suppresses volume fluctuations and brings the sound forward! ① Sound becomes even Even if played strongly → suppressed Even if played weakly → lifted Chords and arpeggios become uniform and easier to hear. (Especially noticeable with clean tones) ② Sustain extends Lifts the point where the sound decays. Single notes sustain longer. Feels great for lead and crying phrases. ③ Attack changes Depending on the settings Attack becomes round (gentle sound) Comes out with a click Cutting becomes even or, conversely, can become sluggish. ④ Sound comes forward (presence UP) Less likely to be buried in the band Audible without increasing the volume Easy to feel "easier to play"