The 2-ACA-Bo from ClassicAPI provides a stereo summing solution for a host of applications. The PCB consists of four amplifiers: two inverting summing amplifiers and two booster amplifiers based on the API 325 card. Each amplifier uses a 2520-style discreet opamp and API-reproduction transformer from Ed Anderson. The 2-ACA-Bo is a great way to add API-style summing to a DIY mixer project or to add headroom and punch to an existing console.
Images courtesy of ClassicAPI
- Accepts any DOA in the API 2520 footprint
- Employs Ed Anderson’s 2503 and 2623-4 transformers
- Includes talkback input
- Length: 5.5” Width: 6”
- Can sum more than 40 channels!
Price: $17.50 for PCB