I have been servicing Onkyo units for a while. With years I've developed deep respect toward Onkyo gear . It is a pity to see how many units are suffering from always failing incandescent bulbs! How much money is wasted for services to replace those incandescent bulbs over and over again! After many years of back and forth I decided to develop a perfect/exact LED replacement that has the same color temperature for the meters, indicators, lettering/paneling. Due to this I decided to develop these proper voltage bulbs. I got in touch with a manufacturer of LED bulbs and worked with them to develop this LED bulbs. I am glad to announce that I succeeded. I am very happy with the result and am sure you will be too!