Altec Lansing today introduced a new universal inMotion model called the iM4 that works with any brand of MP3 or CD player. The inMotion iM4, which will ship in February for US$129.95, is a one-piece portable system with two speakers on either side of a 4.5″ x 5″ no-skid rubberized platform that holds a player of any size in place. The iM4 features a 4-watt Class D digital amplifier that powers four 1″ neodymium micro drivers and Altec’s MaxxBass technology. The iM4 can run on 4AA batteries or AC power.