The ECC83 high impedance amplifier triode was designed specifically for audio use and has a high amplification factor of 100. Mullard describe the ECC83 as a high μ double triode, having separate cathodes, primarily intended for use as a resistance-coupled amplifier or phase inverter.This Mullard valve has white lettering together with the older Mullard logo and the BVA logo it was made in Great Britain.![](../pics/aaq0435a.jpg)
The holes in the end of the stitched anode reveal the control grid within.![](../pics/aaq0435b.jpg)
The anode face view showing the copper grid supports.The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 48 mm tall.References: Data-sheet, 3002 & 1040. Type ECC83 was first introduced in 1954. See also 1954 adverts. |