Not a replacement, but an improvement!

EML 20A, EML300B, EML5U4G in COLOTUBE amplifier, on 6moons Website
300B-XLS in ALLNIC AUDIO amplifier, on 6moons Website
Amplifier Test Yamamoto-A09 on 6moons Website
Emission Labs ®45 Test on 6moons Website, by Srajan Eban
Emission Labs ®520B Newsflash on 6moons Website

Emission Labs ®45 Test on 6moons Website, by Micheal Lavorgna
Emission Labs ®320B-XLS Test, by Bert Fruitema
Emission Labs ®300B-XLS Test, door Johann Schut
Emission Labs ®300B-XLS Test by Johann Schut
Emission Labs ®300B-XLS Test, door "Triode" Dick van de Merwe
Emission Labs ®45  Test by Michael Walsdorf
Emission Labs ®45 Mesh by Robert van Harn
Emission Labs ®VV300B Test in STEREOPLAY GERMANY, by Dr. Burkhard Schwabe