Emission Labs 320B XLS - 842 (Pair)

Description The XLS Series tubes are based on an extra large size (XLS)  Anode system.  This system is taken from earlier EML 52B tubes, and has proven to be ideal for high power applications.  The EML 320B-XLS  is a version of the 300B-XLS with higher peak emission.  In cases where this extra emission is not required, the 300B-XLS is the better choice. The higher peak emission of the 320B-XLS results from the higher heater current of this tube. Specially for Push Pull amplifiers, 320B-XLS is "the" choice. However it needs to be checked if the amplifier can supply the higher heater current needed. Another application is for Single Ended amplifiers that have their performance limits in the standard 300B tubes used, and not in the amplifier hardware itself. Such amplifiers can often already be recognized by the higher weight, such as the VAIC, Mastersound, and several others. These have a large power supply, well sized output transformers, and ideally the option to set the Anode curre