Odo has released Double Six, a 6-operator FM synth with 32 DX7 algorithms and 16 4-operator algorithms.

Features:

• 6-operator FM synth with 32 DX7 algorithms and 16 4-operator algorithms.
• Every operator has its own envelope. You can choose between 1 and 8 stages and set the sustain point from 1 to 7 or off .
• 14 different curves for the envelopes. You can disable the envelope to save some CPU. All envelopes have a time knob.
• The operators can be disabled, fixed or pitched and have a octave range from -6 to 3, fine-tune and pulse width.
• 5 different waveforms for the operators (Sine / Saw / Ramp / Triangle / Pulse).
• The filter has the same envelope and there are 5 different filters types (low-pass 12db / low-pass 24db / low-pass db32 / hi-pass / band-pass).
• EZ preset: This allows you make new sounds fast. You can reset all fine-tunes with the hit of a button or change all waveforms, set all the octaves the same and the times of the envelopes.
• Phase modulation depth control and a feedback control
• Master and volume envelopes.
• One BPM LFO for PMD operator 1 to 6, pitch 1 to 6 and cutoff.
• Chorus, stereo delay and phaser effects.
• 128 preset + 32 made by Cuppa.

Double Six is available for Windows as a VST instrument. It is donationware (the knobs are disabled until you donate). An XXL version will also be released soon; this will be free for everyone who donates.