Tiptop Audio Buchla 292t

Name: Buchla 292t
Brand: Tiptop Audio

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.