Tiptop Audio Buchla 292t
Quad lopass gate with organic Buchla character
16 HP Eurorack module
The Buchla 292t is a quad lopass gate offering three distinct timbral modes per channel: a linear VCA (Gate), a lopass filter (LoPass), and a hybrid combination (Combo). Rooted in classic Buchla synthesis, it imparts organic, woody, and percussive qualities to audio, especially when pinging the lopass filter mode with short envelopes.
Features
- Four independent lopass gate channels (A, B, C, D)
- Three modes per channel: Gate (linear VCA), Combo (VCA + filter hybrid), LoPass (filter)
- Per-channel CV input for amplitude and filter control
- Per-channel blue knob for manual level and offset
- Individual audio outputs for quadraphonic use
- Mixed mono 'All' output for 4-to-1 audio mixing
- LED indicators per channel showing Gate or LoPass mode
- Compatible with 257t attenuator for envelope shaping
- Available in vactrol and RHS (resistor-based) versions with different power draw and response characteristics
- Eurorack 200 series format, 16 HP
Controls & Jacks (25)
- Output All
- Output A
- Output B
- Output C
- Output D
- Level A
- Level B
- Level C
- Level D
- CV In A
- CV In B
- CV In C
- CV In D
- Mode LED A
- Mode LED B
- Mode LED C
- Mode LED D
- Mode Switch A
- Mode Switch B
- Mode Switch C
- Mode Switch D
- Signal Input A
- Signal Input B
- Signal Input C
- Signal Input D
How-To Guides
- Classic Buchla Lopass Ping
- 257t Envelope Shaping for Timbre Variety
- Quadraphonic Spatial Distribution
- Quad VCA Mixer to Mono Bus
- Combo Mode Ringing Decay Texture
- Manual Level Drone with CV Modulation
- Rhythmic Gate Sequencing Four Voices
- Four-Voice Percussive Lopass Drum Synthesizer
- Mixed Mode Timbral Layering
Explore the interactive Buchla 292t panel on BleepDex — tap any control to learn what it does.
