I got the idea from the US amps AX series. I removed the metal plate from under the amps and made my own plexi window. Cut them to size, painted the border and I think they look way better. Adds more class to them. Altough in most installs this wont be visible but Its nice to know that my Merlins are the only ones that have a plexi window to show tEH guts.
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Before:
After:
