device. The volume fluctuates in minuscule increments. The 2GB memory may be filled with songs to play in order or shuffle; it supports AAC, FLAC, MP3, OGG, and WAV files and can play for up to 11 hours on a single charge. iAUDIO 9+ In July 2013, the iAUDIO 9+ was released. The unit has exactly the same physical and technical specifications as the original iAUDIO 9, except for a slightly larger internal speaker and JetEffect v. 5.0 (the original iAUDIO 9 was released with JetEffect v. 3.0). The Cowon iAUDIO 9+ comes in three capacities (and two colours): 8GB (white), 16GB (black), and 32GB (black). It has a 2-inch QVGA (320 x 240-pixel) display positioned atop a capacitive touchpad. It includes a 30mW headphone amplifier, video connectivity (through an extra cable), a microphone, and an FM radio (to record voice and broadcasts). The device is 40g in weight and is 95 x 43 x 8.9mm (3.74 x 1.69 x 0.35 inches) in size. It also supports a variety of audio formats (including rarities like FLAC and OGG) and USB mass storage. iAUDIO 9 In November 2009, the Cowon iAUDIO 9 was released, more than two years after its predecessor, the i7. iAudio 9 has a 43mm x 95mm x 8.6mm dimension, a weight of 40g, menu button and volume buttons on either side of the player, 8/16GB of memory, music and videos found on FM radio. It features a new vertical form factor and improves upon its predecessor by the inclusion of a built-in speaker. The iAdudio 9 also supports files including MP3, WMA, FLAC and WAV files, as well as WMV and AVI videos. The iAudio 9 is a little larger and heavier than the iAudio 8. Sound enhancements All Cowon media players, starting with the iAUDIO 4, feature a set of sound enhancement technologies collectively referred to as JetEffect, including a technology known as BBE+, licensed from BBE Sound, Inc. The distinction between JetEffect and BBE+ is not always clear. On Cowon media players, the JetEffect menu offers the following options: A five-band semi-parametric equalizer A “BBE+” menu with adjustable settings for “BBE+” (presumably a modified implementation of what BBE calls “process” in its Sonic Maximizers), “Mach3Bass”, “3D Surround” and “MP Enhance” (the latter is described in detail here) A “Special Effects” menu with options for stereo enhancement and reverb algorithms The latest version of JetEffect, JetEffect