ADDAC System 200PI (????–Present)
A small module for connecting guitar pedals to a modular rig.
Overview
The ADDAC200PI Pedal Integrator doesn't make sound. It doesn't sequence, modulate, or oscillate. It's a 4 HP utility module from ADDAC System, built for one job: letting external effects pedals work with a modular synth. Plug a delay or reverb pedal straight into a Eurorack setup and you get either a silent mess or a blown input. The 200PI sits between them. It's part of the ADDAC200 Series, a lineup of compact tools for smoothing out patching problems.
Say you have a vintage analog delay pedal that lives on your guitar board, and you want that warbly echo on a modular bassline. Eurorack outputs are hot, way hotter than what the pedal expects. Plug in directly and you distort the input or risk damaging it. On the way back, the pedal's output is too weak to properly drive a modular input. The 200PI handles both. It's a two-channel send/return interface that lives in your rack and translates signal levels in each direction.
Specifications
| Manufacturer | ADDAC System |
| Product Type | Eurorack module |
| Width | 4 HP |
| Depth | 30 mm |
| Power Consumption | 10mA @ +12V / 0mA @ -12V |
| Power Consumption (5V) | 0 mA |
| Jack Sockets | 3.5mm and 6.3mm |
| Channels | two |
Key Features
Two-Channel Send/Return with Dual Jacks
Each of the two channels has both send and return jacks, and every jack comes in both 3.5mm (eighth-inch) and 6.3mm (quarter-inch) formats. You don't need adapters or breakout cables to connect standard guitar pedals. Use whatever cable you've got. Eurorack gear and pedals use different connectors, and the 200PI covers both.
Synth-to-Instrument Level Attenuation
The send path is where the 200PI does its main work. Eurorack outputs typically run at line or modular level, around 10Vpp, while guitar pedals expect instrument level, closer to 1Vpp. Without attenuation, the pedal's input gets far more signal than it can handle. The 200PI's send channels actively attenuate the signal down to instrument level, which protects the effects and keeps the processing clean and undistorted. It isn't a passive pad. It's an engineered step-down that preserves tone without adding noise or loading issues.
Instrument-to-Synth Level Amplification
On the return, the reverse problem shows up: the pedal puts out a weak instrument-level signal that's too quiet for Eurorack inputs. The 200PI boosts it back up to modular level. The return channels include amplification tuned for instrument signals, so it matches impedance and gain structure instead of just turning up the volume. Owners report a clean, neutral pass-through with no coloration.
Collectibility & Value
The ADDAC200PI isn't a rare grail, but modular users who run hybrid setups look for it. As of current listings, the DIY kit version sells for £24.75 to £29.25, which makes it an accessible build for anyone who likes soldering. Pre-built units range from $78.00 to $102.00, with some retailers listing them from $102.00. There are no widespread reports of common failures or reliability issues, and owners note it's been rock-solid in practice. The design is passive-heavy and the signal path is straightforward, so there's little to go wrong, and no maintenance routines have been documented.
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