Yesterday the developer sent me these samples to share with you.
Can't wait until it is possible to tweak it myself as the sounds samples are really promising and think that there is some things you can do with this synthesizer which can be hard to do or not possible in other synthesizer applications for Android,
this in combination with the sequencer, effects and automation
already incorporated into G-Stomper will make many a users happy!
I also add the sound samples as a zip file as there you will get the samples separated and named with the basic settings named. Of course you can use it as samples and feed it into
G-Stomper and pretend that the synthesizer is already integrated.

g-stomper_synth_sounds.7z |
G-Stomper Beat Studio
For more information:
Post on Musical Android
On the Forum of G-Stomper