Sorry for my ignorance, but a while ago, my neighbor from the apartment next door they out a Very nice Marance (?) with only a couple near the right side..Because the voltages to the lamps were virtually identical to LED’s. Doing a direct install of different LEDs’to replace all of the lamps. The amplifier looks better than new, plus I found that the backlit panel, (I changed these lamps with LED’s too) is much much cleaner looking and definitely brighter.
The job was simple enough that I replaced the lamps in just over an hour.
You know? Looking at the sockets In your pics look almost identical to the ones i re-worked. When assembling mine, I used regular plastic cement to complete the replacement. Gluing in the LED’s makes them much more stable, and solid.
Hope this helps. ope you have a great holiday season.
Thomas