I looked for a power supply. The cheap ones max out at 60v. 48v is what is safe for an amateur. Electronics may already have one to spare but this is cheap.
E Lab has some HP pwr splys. These are old school linear lab grade splys. 2x 0 - 20 volt splys and a 0 - 40 volt dual out put sply.
Science can borrow them. Just let me know
What voltage/current/features do you need/want?