I got a chance to buy this Dynacord DRP16 very cheaply. It is an early digital reverb from German company Dynacord, which means it is built like a tank. It only sports 8 presets that cannot be edited. There is a " tone " knob to adjust treble. It was in a clean and working condition, however, given the device's age, I opened it up for a quick inspection. Glad I did, because there was one electrolytic capacitor ( or elco ) that had started leaking it's innards - a chemical - over the circuit board, causing oxidation. A thorough clean and neutralizing of the leaked chemical, and of course a new capacitor fitted, and this one is ready for the studio. Neutralizing is mandatory, since this chemical will keep on " eating " the circuit board. I only have a picture of the board before the cleaning ( forgot to take one after the cleaning and repair repair...). You can see the oxidation around C156.
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