The LEGION ADC offers fully parallel operation for simultaneous data acquisition from all channels without multiplexing in an ultra-compact external USB enclosure. Up to four ADC units can be operated in parallel to enable an unprecedented 1024 data acquisition channels. Incoming analog signals can be amplified on each channel by a fixed 40 dB using optional, integrated preamplifiers. Standalone preamplifiers are available for third party ADCs. Each unit supports 128- and element linear probes. Two and four daisy-chained units can be paired with 512- and 1024-element ring arrays.