Onkyo produces the CBX-300 CD receiver system as a multi-format player. This unit is dedicated to iPod integration, equipped with full range bass reflex 3 1/8” and an Aero Acoustic Drive for powerful natural sound. Being a multi-format player it has the ability to read CDs, MP3 encoded CDs and WMA encoded CDs. The CBX-300 is constructed as one unit, which can be seen as an advantage or as a limitation toward speaker placement. Power is also limited, at 20 watts. Lastly, the iPod dock recognizes all generations, except the 1^st, 2^nd and 3^rd.