Lyonpowers, I'd start by checking that the transformers are adequately rated for your equipment. You need to find the VA rating and ensure it's at least double that of your equipment, preferably more, since transformers are inherently inefficient. I suspect that they will be OK based on what you've said, but you should check anyway.
Assuming the ratings are OK, find out if they are Auto-transformers or isolation transformers. The fact that they are buzzing suggests to me that they are isolation transformers. If they are, then it could be beneficial to leave them in the circuit as they may offer a degree of filtering of AC line noise, not much, but some. If they are auto-transformers I would flip the switches on the back of your equipment, and run them off the line, particularly the power amp. Contact Meridian and ask them about their player. Being a European company I suspect that their PSU will be auto-sourcing and will work on 110 through 240, but you need to ask if it isn't marked.
Depending on who installed the transformers, there may be grounding issues that could cause a hum in your system, particularly if you have components on what will essentially be two or more independent circuits. There may be some trial and error needed.
Check on the PS Unit, it should be stamped 110/220. I doubt that it wouldn't work on 220 but if it isn't clearly marked, shoot PS an email via their website and ask.
The 'safety' issue of having some components on 110 and some on 220 is a non-issue, but there may be issues with grounding that could effect what you hear.
Sorry that there isn't really a definitive answer without knowing more about what type of installation you have.
Assuming the ratings are OK, find out if they are Auto-transformers or isolation transformers. The fact that they are buzzing suggests to me that they are isolation transformers. If they are, then it could be beneficial to leave them in the circuit as they may offer a degree of filtering of AC line noise, not much, but some. If they are auto-transformers I would flip the switches on the back of your equipment, and run them off the line, particularly the power amp. Contact Meridian and ask them about their player. Being a European company I suspect that their PSU will be auto-sourcing and will work on 110 through 240, but you need to ask if it isn't marked.
Depending on who installed the transformers, there may be grounding issues that could cause a hum in your system, particularly if you have components on what will essentially be two or more independent circuits. There may be some trial and error needed.
Check on the PS Unit, it should be stamped 110/220. I doubt that it wouldn't work on 220 but if it isn't clearly marked, shoot PS an email via their website and ask.
The 'safety' issue of having some components on 110 and some on 220 is a non-issue, but there may be issues with grounding that could effect what you hear.
Sorry that there isn't really a definitive answer without knowing more about what type of installation you have.