TAD 12AU7WA/E82CC preamp valve. This 6189W is the High-end version of ECC82 and 12AU7A tubes. Beloved for the best tone. Current stock mainly is SYLVANIA. The 6189W is a direct upgrade for 12AU7A, E82CC and ECC82 tubes. NOTE: As NOS stocks change quickly the picture might show a tube of different brand unless the brand is defined in the description. TAD will always supply a tube of equivalent quality type make/brand/origin.