Capacitors

I have an old poweramp Denon POA2400 that i want to recap and give a little Tlc. The main capacitors in the powersupply are Nippon Chemicon 10000uf 80v
seriesDL which are probably obsolete now, but when i search for it online, it feels more like they dont exist at all. Do anyone here know anything about that specific series?🙂
 
Before you do anything else, measure the ripple on the power supply when there is no input and no output.
That gives you a reference to compare any future changes.
If you have the resources it would be useful to input a 1kHz test signal adjusted so that you have a 10W output (8.94Vac) into an 8ohms dummy load. Remeasure the ripple for this 10W output. Gives another reference for comparison.
With a shorted input, measure the output offset (mVdc) and the Hum+Noise (mVac).