1 NOS Mullard ECC81 Blackburn Vintage Preamp Audio Tube 2 Available

Old stock mullard gt britain ecc81 audio tube. Sought after very old type w/ the most precious warmth and metallurgy of the tube era. Vintage direct import carefully curated, authentic gr britain build codes and glass marks (often overlooked). Fully gm tested + leak short gas and useful life check! Vintage hifidelity audio curation by caliacoustics.