ALTER BOY Sounds - Custom SoftSynth Sound Banks. Please contact @ firstname.lastname@example.org .
Here are 256 presets in 2 banks named THUNDER SYNTH #1 & #2 for the Tone2Firebird freeware softsynth. These are basic synth sounds and a few pads & FX as well.
I hope you like my work!
This is in one of my Signature Series of freeware sound sets.