STS-26 - basic features:
# New: complete new soundset with 128 waves + 21 parc. loops
# New: two contour generators can be drawn with mouse at realtime
# New: Stereo flanger with flexible modulations for depth and feedback per channel
# New: Both filters with Filter FM driven by selectable osc. source each
# New: Low octave loop play [LOP] as part of the synthsound - see demotracks for examples
# Four PCM-wave oscillators powered by 128 selectable waveforms
# two transition sections
# two resonant filters (24db Lowpass and 12 db Highpass)
# three ADSR-style envelope generators
# two LFO (bpm-synced)
# one Sample & Hold (bpm-synced)
# Space rotation for sound rotating in stereo width
# Stereo Delay (bpm synced)
# three Lazy buttons

More info
http://www.hgf-synthesizer.de/