The 13EM7 is the ultimate driver/power tube for the WA6. It has great extension and excellent clarity on all frequency range. You will hear each note with breathing the air around it. The sound is smooth and well balanced.
This tube is compatible to the WA6. You will need to use a tube adapter because the pin layout is different than the 13EW7. It is a twin triode tube with a high amplification factor.
The tubes produces higher output, best paired with power demanding headphones. Headphones that are high-efficiency, there would be some noise.
***not compatible with 1st gen WA6/WA6-SE
Brand may vary based on availability.
