The invention discloses a large-capacity high-speed multichannel data playback device and method. The playback device comprises a rack-mounted
server, a D / A
data interface board and at least two DDR
data cache boards. The rack-mounted
server is respectively in communication connection with the DDR
data cache boards and the D / A
data interface board, the DDR
data cache boards are in communication connection with the D / A
data interface board, and each DDR data cache board is in one-to-one correspondence with the output channel of the D / A data interface board. The device is flexible in configuration and can support multiple channel output
modes. By configuring the D / A data interface board, various settings, such as internal and external
clock selection, channel enabling control, channel output
gain control, PPS synchronous enabling control, etc., can be realized; and by configuring the DDR data cache boards, the functional settings, such as data import, single play, loop play, start play, pause play, etc., can be realized, so that the large-capacity high-speed multi-
channel data playback is realized.