On the technique after the doc (downloaded yamaha.com), there would be almost 700 xg midi sounds and, in fact it is a double standard XG / GM, which will doubtless attract more than one!
The module has a very nice design, and more than four audio outputs, 2 inputs for independent internal multi-effect ....
Polyphony stretch for 64 votes to 32 MIDI channels .... but veiled in GM mode only, the XG mode when he is sentenced to a midi channel.

No edition pc (not even consider the SoundDiver as mu90r XG module but ...)

UTILIZATION

The edition is not very difficult but hey ....

When the manual is clear enough, and like any Yamaha manual available on their site!

SOUNDS

Sounds last is the real problem of this module ..... it does not sound very clear and even less original, there are a prochent pouet a vote of 4 of your SB! They are all variations of GM sounds, in other words it is better ... Anyway ....

No follow-up, no sound available on the web (it must be said that it is unitilisables ...)

The effects are like the rest ... rather than mediocre .... Sorry Mr Yamaha!

OVERALL OPINION

I had a pd after a year and a sad I finally sold (yahooooooooooo);
but why I keep the expander?
It is in my opinion not unique to this one ... I CS1x expander is less mediocre but hey, the sound will never be worth a range roland jv / xp!

In short: A very discouraged!