[Amps] Vacuum relays in Dentron MLA-2500

[Don Knight]

Wondering if maybe someone that has access to the schematic for the MLA-2500 could take a look at it and let me know what I would need to change this amp to use vacuum relays. I've been told that I would need two relays but really don't know for sure. I've found several vacuum relays on ebay but need to be sure of what I need to get. One or two? Voltage? ect.  I can't deal with the relay noise in this amp any longer. Please help!

                                                    Thanks,Don