By popular demand by our loyal customers to experience different varieties of KT88 / EL34 types of tubes, we have sourced the ‘best of best’ possible quality of WE KT88 / 6CA7 Plus from the Shuguang tube factory’s entire current stock for the ‘most demanding and quality conscious audiophiles’. VERY LIMITED QUANTITY on both models. Get yours before it is sold out…. (Shuguang factory has ceased production due to factory re-location and a recent fire. Production resume time is unknown at this moment so we are not sure when we will be able to source these models again… so don’t wait too long till stock sold out.)