The Marconi company had two tubes in thier program

Silver Plated without any Nickel

Weight: 41g

when going to a Load impedance of 3

The pre-driver stage

Emission Labs 20A-Mesh / 20B / 20B-V4 / 30A Rør - Parret par/2 stk. Kabler - HDMI The Marconi company had twoGuarantee: The first owner can register the tube at the Emission Labs website, to participate in the 5 years guarantee program. Description Application EML 30A: One single tube for the first stage and driver EML 20A Mesh: First stage, or driver tube EML 20B: Driver tube or output tube EML 20B V4: Balanced Heater version of 20B Using Directly Heated tubes in a separate pre amplifier is possible, but the design must be made with great care, and good