Some tubes have a numbered metal foil or paper sticker on them. These numbers are not the testing results – they are numbers used to identify each tube during the matching process. It has no meaning to tube users and we usually remove them when we ship the orders. Sometimes warehouse may omit this step during order processing.

If you find your newly purchased Psvane (Pavane) tubes have this numbered sticker on them, please remove it before installing the tube into your amplifier. If there is residual glue on the tube glass, you can use damp cloth to wipe the glue off. Do not wet the tube itself in any liquid.