The Oberheim TEO-5 synthesizer is a feature-rich instrument that combines classic analog sound with modern functionality.

Oscillators and Modulation:

• Two LFOs (one mono, one poly) with five wave shapes each: triangle, sawtooth, reverse sawtooth, square, and random (sample and hold). Both can sync to tempo and are freely assignable via the modulation matrix.
• OSC MOD section with controls for oscillator hard sync and X-Mod, featuring through-zero FM for enhanced sonic variety through interoscillator modulation.

Filter:

• A classic SEM-lineage, two-pole, discrete resonant filter design forms the soul of the TEO-5 sound.
• Morphing capability from low-pass to high-pass through notch, with a switchable band-pass mode, greatly expanding sonic possibilities.

Envelopes:

• 5-stage (Delay, Attack, Decay, Sustain, Release) filter and volume envelopes, modeled after the OB-8, shape the harmonics and loudness of sounds.
• Versatile enough for silky pads or punchy bass tones.

Arpeggiator and Sequencer:

• Arpeggiator creates chord-based rhythmic patterns with adjustable rate and pattern (up, down, up & down, or played order), plus transpose range of ±2 octaves.
• Polyphonic, velocity-sensitive step sequencer with up to 64 steps, including rests and ties, syncable to external MIDI clock.

Clock and Effects:

• Dedicated clock panel with BPM knob, tap tempo button, and clock division setting.
• 24-bit, 48 kHz digital effects including stereo distortion, reverb, and selectable effect (syncable delay, chorus, flanger, Lo-Fi, vintage Oberheim phase shifter and ring modulator emulations).

Preset Management:

• 256 Factory programs and 256 User program slots.
• Bank button for 16 banks and individual Program Selector buttons for direct selection.

Keyboard and Controls:

• 3.5-octave, 44-key premium-quality Fatar keyboard with calibrated velocity and aftertouch sensitivity.
• Modulation wheel and spring-loaded pitch wheel with selectable bend range (1 to 12 semitones up/down) per program.

Connectivity:

• Standard 5-pin DIN connectors and USB MIDI for instrument/DAW communication.
• Pedal inputs for sustain, volume swells, filter sweeps, and sequencer triggering.

This comprehensive feature set makes the TEO-5 a versatile and powerful synthesizer suitable for a wide range of musical applications, from classic analog tones to complex, evolving soundscapes.