Ques on Mcintosh and Power Meters

Whay are LED's better? If it ain't broke, don't fix it. I'm sure you're not hearing an audible difference by saving about 1-1/2 watts of juice at best

Two MC-2105 Amps bought new. 29 years later, none, not even a one burned out. I decided to change all Lamps to the same original Lamps 5 years ago, just cause I seen a bit of haze on the inside of the Glass Faces by the Meters, they needed cleaning, and figured, if I'm going in, might as well change Lamps while I'm in there.

Next time I'l need to change them? About 24 years from now. (maybe) Mark

LED's are better simply because they last much longer. You should be very pleased that your bulbs performed so long Mark.

There is 50000 hour incandescents available. Sometimes the leds change the color just a little. I've used both kinds.