88 note hammer action
Good piano touch and very good piano sound for this price range.
The other presets are correct without being on top.
The sequencer is a gadget can with 5 tracks (one for support) that are not editable (no mixer) In addition to not dub over the slopes.
The accompaniment styles of the machine are correct to give the impression that was made or even a real band! But you get tired pretty quickly.

UTILIZATION

Keyboard surprisingly easy to access ...
Apart from a few small tweaks (supports long keys to unlock some other functions) need to read the manual a bit, the rest is relatively easy to understand given the relatively small number of feature on this machine.
Opportunity also to learn to play piano with the mode "lesson":
We load a midi file (format 0) and can be learned separately right hand or left hand while being supported and guided by the machine.
The novelty for me is the ability to connect a USB stick and is convenient to backup or exchange data. You can also connect the DGX 620 to your PC with this decision.
A USB cable / MIDI (not supplied) allows you to use all the MIDI functions.

SOUNDS

Grand piano sound: very good.
Super nice touch keyboard and nuances are retransmitted.
Other sounds without too much interest ... especially the fx ....

OVERALL OPINION

Possessing a Korg Triton and a sequencer on a PC I use mainly the sound of the grand piano ... The rest is not too much interest (still in my opinion)
But being realistic, hard to find a keyboard on the market with such a great touch and such a good piano sound in this price range.
In addition it has a few functions that can satisfairent arranger musicians undemanding.