the british supplied expert engineering + tooling via 'transfer of technology' resulted in several critical audiophile advantages:
same anodes, micas, electrode geometry, glass envelope, spot welding, grid wire spacing and cathode processing chemistry
translucent highs and warm mid-band tone euphony, live-concert style delineation between instruments vocals and percussion
take your listening experience to a higher level of dimensional engaging detail, immersive harmonic imaging and transparency
transform sound reproduction and realistic playback across multiple genres w/ rich bass depth and holographic textured resolve
these 4 true nos sealed box originals are very hard to find, carefully curated from japan collections, unopened rarities
keep them on your shelf for several decades more, or video your unboxing for fans and friends