Musical Fidelity A1 I


What is cost to have repair center recap and replace volume knob on an A1 amp? And what is a fair price in that amp? The volume knob is missing and much of the lettering near the control knobs has worn off. Should I maybe look for a newer model with less wear? I need an amp $500 - $1000 used or new for Triangle Altea ESW speakers and Oppo 105. I want to make the right purchase so Triangle's sound good. Thanks! P.S. I know squat when it comes to hifi gear, systems, etc. Do I need additional gear to play my CDs and SACDs? 
ul585
My mistake. It is in this thread that russ is helping me. I really appreciate both of you. There is a lot of technical information regarding this hobby compared to my other hobbies. I need to read more!
"...Thanks Russ. The M2si is $1000 new vs M3si at $1500. Same watt amp minus the phono and dac. What advantage is there with the M3si? Would the dac better than the Oppo Sabre dac? Much appreciated! BTW what Triangle speakers do you have?..."

The M3si is not the same as the M2si. I don’t use the phono or the DAC so I’m no help there. The M3si is my cheapest recommendation and I would prefer you to get the M5si, it will drive anything you throw at it. I had Triangle Celius 202s (a beautiful all veneer pair) and currently have Antal Esprits (Sam Tellig told me I would like them but the Celius were better). 
Careful.
I sent an MF 'The Preamp' back to MF to replace the noisy volume pot and it came back the same.  Many years ago.  I gave up and moved to Audio Research who build stuff properly.