Ultron 12AX7 ECC83 NOS Matched

Excellent AUDIO ECC83 or 12AX7 ULTRON preamp valve, NOS/NIB genuine produced in Belgium and therefore with typically Germanic construction and performance characteristics. The tube is perfectly NEW, NOS / NIB despite there being a label on the box, due to the cancellation of the writing. Manufacture very similar to Philips and Mullard with dark gray striped plates and with robust and full-rounded mica that gives excellent response and low microphonics. Totally and completely "balanced" perfect for use in Hi-Fi set or Amplification for musical instruments