Roland cube 40xl COSM for sale This model of the cube is an excellent practice amp which packs a kick in volume too. I bought this amp for home practice just over a year ago and it has served me very well, however I will be leaving China soon and I can't take it with me. I bought the amp for 3000rmb and I am selling it for 1200rmb. The amp is very clean, has no damage to the inside or outside and is in 100% perfect working condition.