Price is also affected by the use of costly woods, luxury decorations, and features such as a palm switch, grille mute, and so on. Some accordion makers sell the same model in a range of different models, from a less-expensive base model to a more costly luxury model. Typically, the register switches are described as "Reeds: 5 + 3", meaning five reeds on the treble side and three on the bass, and "Registers: 13 + M, 7", meaning 13 register buttons on the treble side plus a special "master" that activates all ranks, like the "tutti" or "full organ" switch on an organ, and seven register switches on the bass side. Another factor affecting the price is the presence of electronics, such as condenser microphones, volume and tone controls, or MIDI sensors and connections.