The Pioneer CDJ-500II builds forward on the Pioneer CDJ-500 and improves a lot of it's functionality and also new Loop features are added.

Successor : Pioneer DJ CDJ-500 II LTD
Predecessor : Pioneer DJ CDJ-500
The biggest difference between the CDJ-500 and the MK2 is in the loop section. The CDJ-500II is was the first CDJ to have the loop functionality that would become the standard for all future decks. It was already possible to make a loop of a section of a CD for 10 seconds on the CDJ-500, this has been increase to 10 minutes of maximum loop length.

CDJ-500II introduces the Loop In button, Realtime Loop In, Loop Out Adjust and the Reloop/Exit button.
Cue Sampler plays the track from the Cue point when pressing and holding the Cue Button for maximum 10 seconds (0.7 seconds on CDJ-500).

Features

DJ Compact Disc CD Player
Loop In/Realtime Cue, Loop Out and Reloop/Exit (max 10 minutes)
Vinyl Turntable Design
Jog Dial for a closer to vinyl feeling when pitch bending
Jog Wheel used for frame-by-frame search en Cue Point selection
Flat-Top Design
Quick Start
Playing Address, a light bar provides a graphic indication of elapsed playing time
Tempo Control, ±10% pitch range
Master Tempo, locks in the music's pitch even when the tempo changes
Power and Eject button safety guards
Fader Start Play / Back Cue Play
Auto Cue, cues at the first detection of audio in the track

Specifications

Frequency Response : 4-20kHz
Distortion (TDH) : <0.004%
Signal to Noise Ratio : >106dB
Dynamic Range : >96dB
Channel Seperation: >98dB
Power : 220VAC 50/60Hz
Power Consumption : 21W
Dimensions (WxDxH) : 320 x 362.1 x 98.5 mm
Weight: 4.1 kg