ADDAC System ADDAC205 Dual Oscilloscope & AWG
The ADDAC205 Dual Oscilloscope & AWG is a compact Eurorack module that fits two dual-channel oscilloscopes into 10 HP. Each has its own high-contrast OLED screen. Analogue Haven listed it at $425.00. The idea is simple. Instead of patching out to a bulky bench scope, you look at voltages and audio right in the rack. Each oscilloscope also works as an arbitrary waveform generator running at 8 bits and 44.1kHz.
Each of the two oscilloscope sections has two channel inputs with commutable switches, an external trigger, and four buttons for getting around the menu-based system. The AWG side generates sine, triangle, and saw waves. Inputs use 3.5mm and 6.35mm jack sockets wired in series. The module runs on either ±12V or ±15V supplies, draws a maximum of 150mA, and uses a standard Doepfer-style 8×2 IDC bus board connector. CV inputs accept ±10V, and CV outputs run at 0-5V. The oscilloscope screen refresh rate is 128Hz.
An Equipboard entry described the module as "a crucial addition for any modular synthesizer enthusiast," touching on "the intersection of precision and creativity." Beyond that, there is little reception to go on. A Gearspace thread on ADDAC modules notes there are currently no discussions specifically about this unit. A related model, the ADDAC205B, is listed as a "dual oscilloscope & AWG digital expansion," though the differences between the two aren't documented.
No production years, weight, or detailed circuit information have surfaced. What exists is the spec sheet and the general intent: a space-efficient way to see and generate waveforms inside a Eurorack system.
- Format: Eurorack, 10 HP, 5 cm depth
- Two dual-channel oscilloscopes with OLED displays
- Arbitrary waveform generator per scope: 8-bit, 44.1kHz (sine, triangle, saw)
- CV inputs ±10V; CV outputs 0–5V
- ±12V or ±15V compatible; 150mA max
- Original price: $425.00
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