The Audio Logic D11 is a 1 input, 1 output digital delay intended for acoustical alignment of under-balcony speakers or multiple speakers installations, but may also be used wherever high quality delay of audio is necessary. The D11 has a minimum delay time of 1.25 milliseconds, maximum delay time of 1.28 seconds, and is adjustable in increments of 1.25 milliseconds. The unit has a frequency response of 10 Hz to 20 kHz, +0/-2 db. This digital delay unit offers extraordinary flexibility for increasing intelligibility in acoustically large environments.