Ensoniq DP4

Frequency response (wet and dry) = 2 Hz–18 KHz
Signal-to-noise (“A” weighted) = at +4 dBu
in to out = -90 dB
output only = -100 dB
at -10 dBV
in to out = -90 dB
output only = -95 dB
THD + Noise (“A” weighted) = better than .0032% (-90 dB)
at input levels of -12 dB and below
Dynamic range = 96 dB
IM distortion (SMPTE) = 0.05%
Crosstalk between channels better than -80 dB (1 KHz)
Input impedance =
Rear Input = 18.6 KΩ
Front Input (1/4”)= 910. KΩ
Front Input (XLR)= 1. KΩ
Output impedance = 300 Ω
Maximum output level into > 10. KΩ = +19.2 dBu
Maximum output level into 600. Ω = +15.7 dBu
(4) 24/48 bit DSP chips yield 40 MIPS processing power
Digital to Analog conversion = 16 Bit
Analog to Digital conversion = 16 Bit
256K words of delay memory (512 Kbytes)
Max delay time per unit = 1.6 sec.
Max single delay time possible (no regeneration) = 6.4 sec.
Preset Memory = 400, divided between 200 ROM, 200 RAM (user)
Headphone output = 37.mW/channel into 600 Ω, 14. mW/channel into 30 Ω

https://ccrma.stanford.edu/~dattorro/DP4.htm