Tiptop Audio has introduced Forbidden Planet, an 8HP all analog multi-mode filter for Eurorack.

Tiptop Audio Forbidden Planet

The filter design of Forbidden Planet is influenced by the 1975 Steiner-Parker Synthacon model. It can be controlled manually or through CV.

Forbidden Planet has three filter input jacks: High Pass, Low Pass and Band Pass. The High Pass section is this module’s signature sound—a crisp sharp-cut with no residue, designed to add High Pass filtering capability to Tiptop Audio’s wide range of Eurorack modules. Send a throbbing kick drum through the High Pass section and filter out the the rumbling lows while maintaining the pulse of the beat. The Bandpass is clear and useful in isolating a pie-slice-range-of-frequencies while cutting off the low and highs, great for accurate sound design or sculpting audio into that sweet spot. The Low Pass is an airy classic 12db two-pole analog slope ideal for monophonic synth patches and filtering down to the essential low-end bass we all love.

The Forbidden Planet Resonance utilizes an internal feedback path which can sound smooth or aggressive depending on the knob setting. At a low setting, it emphasizes the cutoff harmonics, at middle settings it begins to self oscillate, and towards maximum setting it forms interesting tones and all sorts of chopped grainy bits of self-oscillation perfect for entering into a sci-fi world.

Forbidden Planet is available now priced at $120 USD.

More information: Tiptop Audio