This Module is currently available.
Echo
Digital delay with 16-/ 24-Bit resolution, 46.9kHz sampling rate and a maximum delay time of 3 seconds. It offers one mono input and two separate outputs for creating ping-pong delays.
https://www.analoguesystems.co.uk/index.php/as-modules/rs390
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These merchants probably sell this module. Huh?
Analogue Systems RS-390 Echo