The BLU-326DA, formerly the BLU-326, is the card-based I/O expander that bridges Dante and AES67 into a Soundweb London system. Four slots take any mix of analog input, analog output, digital input, digital output, AEC input and telephone hybrid cards in banks of four, up to 16 channels in a single rack space. Analog input cards give software gain in 6 dB steps to +48 dB with phantom power selectable per channel; digital cards handle AES/EBU and S/PDIF with a choice of clocking and sync options.

Dante and AES67 audio runs on primary and secondary ports for fault tolerance with control on a separate Ethernet port, and Dante 4.0 firmware brings it under Dante Domain Manager. The 256-channel BLU link bus travels 100 m on Cat 5e or past 40 km through fiber media converters. Front panel LEDs report phantom, sync, signal present and clip per channel, and the display carries device name, type, firmware, IP address and subnet. The unit is EN 54-16 compliant for life safety applications.

Card Slots	4, any mix of the six Soundweb London I/O cards
Maximum Channels	16 in / 16 out
Network Audio	Dante / AES67, primary and secondary ports
Dante Domain Manager	Supported (Dante 4.0 firmware)
BLU link Digital Audio Bus	256 channels over Cat 5e, 100 m between devices
Control	12 control inputs, 6 logic outputs, RS-232, GPIO
Compliance	EN 54-16 for life safety applications
Chassis	19 in, single rack space, LCD display