ALM Busy Circuits S.B.G-PRO
Eurorack to line level interface with safe CV expression
10 HP Eurorack module
The S.B.G-PRO is a utility interface module that bridges Eurorack modular systems with external line-level audio equipment such as rack effects, guitar pedals, and mixers. It provides level conversion in both directions, true stereo send/return with balanced 6.35mm connectivity, and an equal-power crossfader for smooth wet/dry blending. Its expression output section with diode-limited 3V and 5V conditioned outputs enables safe CV control of external gear without risking damage.
Features
- True stereo send and return via 6.35mm quarter-inch jacks
- Balanced and unbalanced 6.35mm jack compatibility
- Mono-to-stereo normalling on return inputs
- Up to 32dB of return gain boost
- Clip indication LEDs on return channels
- Equal power crossfader for smooth wet/dry mixing
- CV-controlled crossfading via 0-5V input
- Expression CV input with diode-limited 3V and 5V conditioned outputs
- Included floating ring cable for safe expression output connection to pedals
- Send level attenuation for modular to line level conversion
- Reverse power protection
- Compatible with modular-as-effect and rack-effect-in-modular workflows
Controls & Jacks (17)
- Mix CV
- Dry/Wet
- Mix Out (L/R)
- Modular Dry In L
- Modular Dry In R
- Send Level
- Send Out (L/R)
- Return L
- Return R
- Return Level
- Return Stereo (L/R)
- Clip LED L
- Clip LED R
- Expression In
- 3V Out
- 5V Out
- Return R (TS)
How-To Guides
- Modular Through Rack Reverb
- CV Control of Expression Pedal Input
- Automated Wet/Dry Fading with LFO
- Modular as Mixer Insert Effect
- Stereo Guitar Pedal Integration
- Mono Send to Stereo Return Widening
- Envelope-Controlled Wah or Filter Pedal
- Gain Staging with Clip LEDs
Explore the interactive S.B.G-PRO panel on BleepDex — tap any control to learn what it does.
