Tetra is a morphing synthesizer which generates a band-limited quadrature signal, i.e. a stereo signal whose harmonics differ pairwise by 90 degrees.

By morphing between two definable timbres, Tetra can create a wide range of unique sounds.

• Stereo output of band-limited quadrature signals with up to 1000 harmonics.
• Morphing between two timbres, controlled by an envelope.
• Copy & Paste buttons for quick storing and restoring of all control settings.
• Control changes may affect the sound either immediately or when the next note is played.
• Text field input for all controls.
• Freely selectable polyphony with up to 16 voices. Note sliding. Adjustable pitch bend range.
• Envelope and key tracking controlled volume.
• Freely adjustable Attack, Decay, and Release slopes.
• MIDI control of all parameters (NRPN).
• 100 presets.