The Sampler has been improved yet again and the whole Effects section now has it's own dedicated Filter which means you can use Echo and Delay on a track and filter out all the low frequencies so that your Kick drum isn't affected.
You still get all the DJM-800's MIDI control too- every Knob - Slider and Switch can send MIDI information to Ableton - Traktor or any other MIDI capable software. What you are missing is the DJM-800's Digital Inputs for CDJ-1000's (although you can obviously use the standard Line in's for CD players as usual) and the Colour Effects (although the Filter from the Effects section can also be applied to any individual channel so that's no great loss either) and what you gain is about 300 quid in your pocket!
Here's the official bumf from Pioneer HQ:
"The 4 channel DJM700 and 700S (Silver) have been introduced to sit in
between the DJM 600 and 800 in the line up. The DJM700 has the same 24 bit
96khz digital pedigree of the DJM 800 and 1000 and boasts a range of BPM
effects and a manual filter which can both be used at the same time. In
addition to these effects the DJM700 features the worlds first 'effect
frequency filter' which sends the chosen BPM effect across the EQ band as
you rotate the manual filter dial.
Delivering breathtaking scope for creativity - consummate clarity and a world first in terms of its Effect Frequency Filter - the ingenious new DJM-700 is dramatically different. A matchless 4-channel mixer that allows DJs to present the freshest - most explosive live performances - the DJM-700 is pure – 96kHz/24-bit – digital dynamite. The MIDI assignable mixer elevates the DJM series by fusing digital DNA from installation-grade forerunners such as the DJM-1000 and DJM-800 mixers with innovative new digital effects that are set to exceed the market’s expectations of ‘mid-level’ mixers. With an industry-standard size and layout and a dual shield structure that eliminates digital noise - the new DJM-700 is both robust and reliable. Designed to impress in bar - club and studio spaces alike the DJM-700 is set to have a wide appeal.
Another new feature on the 700 is the
'roll up' and 'roll down' effects which allow the DJ to make a sample and
increase or decrease the pitch of the sample over the selected time