GrailRare DualDGetter NOS Matsu/Mullard 5AR4 GZ34 RectifierAudioTube + FreePost

Be sure to see our new offical site! New part numbers added daily including rare limited editions + sealed box true nos. Old stock vintage matsu national 5ar4 gz34 preamp audio tube w/ rarest dual dgetters and original box.

The british supplied expertise and 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! Take your listening experience to a higher dimension w/ engaging detail and immersive harmonic smooth imaging.

Revered for their sound reproduction, these direct japan imports are carefully curated top echelon vintage. Beautiful warm live-concert style delineation between instruments vocals and percussion. Sonic review: "great balance across the whole range, simply wonderful rich full sound".

Full amplification test 101/102 % gm (65 % good) + our useful life test pass! Our unique gm output test applies 225 vdc simulating actual circuit operations w/ filtered dc + leak short gas test. Authentic vintage hifidelity audio curation by caliacoustics.