Check out the power of this GT exclusive tube we introduced more than 12 years ago in a special partnership exclusive with the folks at Tesla, the factory now called JJ. It interchanges with any EL34 application and puts out about 15-20% more power! It also has great tone and it remains one of our best selling tubes of all time. Why? Because we specially modified the stock Tesla E34L (a higher powered variation of the EL34) by adding the exclusiv...