Some products may be excluded due to manufacturer pricing restrictions. These manufacturers may include but are not limited to the following: Alto, Altus, Alvarez, Ampeg, Anderson, Armstrong, Audio-Technica, BAC, Bach, Besson, BOSS, Breedlove, Buffet Crampon, Casio, Conn, DigiTech, Emerson, Fender, Gemeinhardt, Gretsch, Hans Hoyer,Hohner, Holton, Jupiter, K&M, Kala, LeBlanc, Lexicon, Ludwig, Martin, Meinl, Pearl, Powell, Prelude by Conn-Selmer, Roland, Sabian, Schilke, Selmer, Selmer Paris, Shure, SKB, Sonare, Squier, Takamine, Tama, Toca, VOX, Yamaha, Yamaha Band & Orchestra, Zildjian and others.