Lightly used, test as new, old stock tubes. Labels may vary or be completely worn off. Grade 2 versions have higher than average microphonics and are not recommended for first gain, or phono, stages. They're fine for Phase Inverter, Tremolo, and line stages, however.

NOS in original box. Only one in stock!

NOS in original boxes.

NOS 1962 vintage Brimar CV492. Same as 12AX7, ECC83 and CV4004. British ilitary tube received in bulk packaging as shown. Sold in white boxes.

Fantastic guitar tone. Extra special in Marshalls and Voxes and reproductions.

Mike:

These are amazing! Ordered more already! SUPER present mids, while still sounding very open and clear. Zero harshness!

Jacob

Hi Mike,

NOS, made in America, in original boxes. VERY RARE Black Plate version.

Rare 1950's version.

Some labeled correctly in white boxes, others relabeled and boxed as United 5751.

French military gray plate version in original boxes.

Labeled and boxed as Amperex, Philips or Dumont. Made in Herleen Holland with appropriate delta production code. Highly desirable, premium grade, tube for audiophile and guitar amp applications. Mike: The Heerlen Holland 12AX7's are especially awesome. The high end chime and smooth distortion when cranked in my tweed Bandmaster are just what I was looking for!! John M

NOS in original boxes.