Tiptop Audio Buchla 230t
Triple envelope follower with pulse generators per channel
16 HP Eurorack module
The Buchla 230t Triple Envelope Follower is Tiptop Audio's Eurorack recreation of the classic Buchla 200 Series Model 230 module. It contains three identical channels that translate any audio signal into smooth control voltages, plus pulse generators that derive clocks, gates and triggers from the same source. Each channel has Sensitivity (input attenuator), Decay Time (1 ms to 5 sec, governing both CV release and pulse behavior), and a Pulse Response toggle that selects between sustained gates and short transient pulses. Two duplicate CV outputs per channel make it easy to send the envelope to multiple destinations without external multiples.
Features
- Eurorack recreation of the classic Buchla 200 Series Model 230 envelope follower
- Three identical, fully independent envelope-follower channels
- Per-channel Sensitivity (input attenuator) for matching any signal level
- Per-channel Decay Time from 1 ms to 5 sec for tight tracking or slow modulation
- Two duplicate CV outputs per channel for fan-out without external mults
- Per-channel pulse generator with Sustained and Transient modes
- Visual pulse indicator LED beside each Pulse output
- Sustained mode = Buchla-style gate while audio is above threshold
- Transient mode = short trigger on onset with adjustable refractory window
- Decay Time governs both CV release and pulse behavior in tandem
- Ideal for sidechain ducking, audio-to-clock conversion, voice-driven CV
- 16 HP, 25 mm depth — fits any Eurorack 200t setup
Controls & Jacks (24)
- A CV Out 1
- A CV Out 2
- B CV Out 1
- B CV Out 2
- C CV Out 1
- C CV Out 2
- A Pulse Out
- A Pulse LED
- B Pulse Out
- B Pulse LED
- C Pulse Out
- C Pulse LED
- A Signal In
- B Signal In
- C Signal In
- A Pulse Response
- B Pulse Response
- C Pulse Response
- A Decay Time
- B Decay Time
- C Decay Time
- A Sensitivity
- B Sensitivity
- C Sensitivity
How-To Guides
- Sidechain ducking from a kick drum
- Derive a clock from an acoustic loop
- Voice-driven filter sweep
- A patch that listens to itself
- Triple-band envelope detector
Explore the interactive Buchla 230t panel on BleepDex — tap any control to learn what it does.
