Upscale Audio’s Kevin Deal reviews the Tesla E88CC / 6922

Tesla E88CC/6922 - These are not the current production JJ tubes... NOS 1960’s vintage, made in what’s now the Czech Republic. Very cool, low microphony, loiw noise, and test very well. Airy highs, smooth mids, and great detail... never syrupy. If you are looking for a cool 6922 without spending big $$$, these are a great choice. It was very common to see this tube branded & sold as Valvo, Brimar, etc. back in the day, but the ones we have are all branded Tesla.