ThurstonX
Headphoneus Supremus
I was pretty sure these would be good in the Lyr, but it's an especially sweet feeling when a hunch turns out to be true.
But to clarify, to the best of my knowledge, every ECC804 was manufactured by Brimar. It was never manufactured by Mullard or any other Philips subsidiary. Further Tungsram didn't make them either. Only Brimar. So it doesn't matter what brand you see on the tube, whether it be Brimar, Mullard, Mazda, Ediswan or what-have-you. They are all from the same factory. However, I have noticed that on some tubes, the shield is gray, and on others, it is silver. While I have not investigated to see if there is a sonic difference, it might be best to be sure the shields are the same.
And your impressions mirror mine, but of course, in a different amp. To help others, I would say that that the sonic signature of the Brimar ECC804 is intermediate between Mullard and Heerlen, not as warm as the Mullard and not as bright and lush as the Heerlen. Very good bass, a bit of warmth and fairly liquid, a very nice tube.![]()
Thanks for the additional info. I guess Mullard and the others bought them to label and sell to television repairmen, given they were mainly used in TVs.