Roland DEP-3 Digital Effects Processor, 1987, made in Japan

Link: cdn.roland [Owner's Manual, PDF] | muzines | 

The Roland DEP-3 is a versatile effect that features three effects; Reverb, Delay and Nonlinear (=gate reverb that cuts the reverberation at a certain gate time) each having equalizing function.

Specification
Input: +4dBm or -20dBm / 47kΩ
Stereo outputs: +4dBm or - 20dBm / 600Ω
Conversion: 16 bit linear A/D/A convertion / 28 bit internal arithmatic DSP
Sampling Frequency: 32kHz
Frequency Response: 10kHz to 50kHz direct, 30Hz to 12kHz effect
SN Ratio
(IHF A at rated input): 82dB direct, 76dB effect
Dynamic Range: Better than 94dB direct, 86dB effect
Total Harmonic Distortion: Below 0.02% direct, 0.08% effect
Programs: 99, including 20 factory presets which may be overwritten
Pre-Delay Time: 0 to 120mS
Reverb Time: 0.1S to 99S, (1OS in non-lin mode)
HFDamp: x0.05 to x1 of decay time at 8kHz
Gate Time: 10 to 450ms
Delay Time: 2 to 500ms
Reverb Select: 3 Rooms, 3 Halls, 2 Plates, 1 Delay and 2 Non-lin
Equaliser: 12dB cut or boost at 100Hz, 1kHz and 10kHz (Built in three band equalizer)
MIDI: Recognises program patch information on channels 1 to 16. Also Omni On/Off is implemented and system exclusive codes may be used to access the effect parameters if required.