The E34Ls are a higher power version (15% greater plate dissipation) of the EL34s and great for Marshalls, Dynacos and more! They are ideal for replacement and upgrades in vintage and modern power amps. They can handle over 600 V on the plate. Perfect for all EL34 applications. This one is the closest to the original Mullard sound and a bargain price. Get your set now and really enjoy the music!!! Gold plated control grid for improved fidelity. Special plate alloy improves plate dissipation as compared to the standard EL34 resulting in stable performance at higher power levels. This tube has about 20% more head room than the standard EL34 and it also has a deeper, tighter low end. It is also a bit punchier and more aggressive which makes it a great tube for Matchless, Bogner, Carvin, Peavey and all Marshall amps.  view spec sheet in .pdf