Both oscillators offers selectable waveshapes and can be hard-synced, while the dedicated analog LFO features audio-rate capabilities. The classic 24 dB low-pass ladder filter provides a frequency range of 10 Hz to 20 kHz, while the patchable 1-pole high-pass filter offers additional harmonic shaping. Additionally, the Grandmother offers a standard ADSR envelope generator and is complemented by a built-in hardware spring reverb.

The on-board sequencer offers three memory slots and each sequence can retain up to 256 notes. Additional features include USB MIDI, MIDI in/out/thru via 5-pin DIN, a patchable bipolar attenuator, a patchable 4-way mult, and a 1/4" external input for processing guitars, drum machines and more. The Moog Grandmother ships with a power adapter.