AI-generated product photo — not official manufacturer imagery.
About the BC109 AL28
The Blue Circle Audio BC109 AL28 appears to be a special or customized version of the BC109 line-stage preamplifier, reportedly associated with the optional CP2 supercapacitor power supply. Publicly available documentation specifically identifying the AL28 configuration is very limited. The standard BC109 is a fully discrete stereo preamplifier with balanced and single-ended connectivity, separate left/right Shallco attenuators, three selectable line inputs, and configurable tape/processor loops. The CP2 supply was designed to allow extended operation without AC power; published forum information identifies an example CP2-equipped BC109 as “Nikki’s BC109 AL28.” The AL28 designation should therefore be treated as a configuration or individual-unit designation rather than a fully documented standalone model.
Specifications
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
Never published
- Analog Output — the maker never published this. Checked 15 sources on 6 Sept 2026
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions