Classe CA-101 Remote turn on Module?

I recently purchased a pre-owned Classe CA-101, on the back it has a phone style jack where a remote trigger module would plug in to turn on the amp with my pre-amp, It does not have the newer style 1/8" mini plug 12 volt trigger input. Classe does not make these anymore, does anyone know where I can still buy one, or how to modify the amp to be able to use a 12volt trigger?

Thanks
RP.