Wavetable oscillators and FM-style algorithms, Surge is capable of creating some pretty sparkling sounds, but it also has analogue-style functions that make it suitable for producing vintage keyboard tones.
It is a hybrid subtractive synthesizer boasting a dual synth engine, three oscillators per voice with eight oscillator algorithms (analog, FM, wavetable, audio input, and more), 183 wavetables, two filter units with eight filter types, twelve highly customizable LFO modules per voice, eight FX slots with ten FX types to choose from, and a modulation matrix. The instrument comes packed with 1,010 presets which are organized into categories for easy browsing.
http://vemberaudio.se/surge.php
