Feature:
The castor wheels are really necessary for a heavy amp/sub woofer module and the mounting poles and clamps for the satellite speakers allow creativity and gives the v-drums that extra sophisticated look. However, I hate the connecting cables dangling all over the place and you have to connect the 2 satellites to the amp module and you can imagine the cables all over the floor... wish something could be done, otherwise everything else is OK, enough channels on the amp to be used.. one thing though.. mine's made in China it says on the box and the feel of the knobs are a very low-cost feel, different from the Roland amps that are manufactured in the USA. For the hefty price, one would expect more solid material rather than cheap feeling ones.

Quality:
Covered quality above... could be better.. somehow the front panel with the knobs looks a little toyish... not professional feel like other Roland amps I am used to...

Value:
As mentioned, pricey... but the sound makes up for it...

Desirability:
It looks like a cool dude with the v-drums... and it gives me a very private experience sitting in the midst of the sound that goes all around you... and having a stereo effect on the v-drums gets the instrument sounds coming from the right places... high hat from the left and floor toms from the right...

Sound:
I know I am the first one to have shipped the Roland PM30 from Japan for my TD20 V-drums into Singapore and possibly the only one who owns it right now in this country. The sound is crisp and clear, the dispersion is first class mainly cos of the satellite speakers delivring the full stereo and distinguish the different playing sounds from both the v-drums and the music I pump in from an iPod shuffle... the sub-woofer sits behind me and adds the wholesome sound to complete the experience. I could just sit on my drum throne and just listen to my mp3 songs playing thru this great amp!

Ease of Use:
Plug n play... all the knobs are easily accessed and the description clear. But like I mentioned, the cables that need to be connected into the back of the amp is cumbersome.. also, the carry bar seems to be a little bit in the way for the cables to sit properly... otherwise, cool...

Support:
Don't know yet... based in Singapore, if anything goes wrong with this set, I guess it has to be shipped to Japan.

Overall:
This is it!! If you own the v-drums and want to pair it up with a decent amplifier and speaker system, this is it... after all, it was designed for the v-drums, what else can you ask for?