2 x NOS tubes ECC83 12AX7 Philips Valvo matched pair

Matched pair. The desired result in the application is therefore purely random. Emission much better than 100%. Anode current Ia: 1,21 + 1,22mA and 1,22 + 1,18mA (100% = 1,2mA ±0,15mA). More information you find at the end of this describtion.