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Tektronix 3A72
Dual channel amplifier plugin
Tektronix 3A72

Compatible with 560-series scopes

Produced from 1961 to (?)

(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Tektronix 3A72 is a two-channel amplifier designed for use in the 561 and 565.

Prior to serial number 1420, the 3A72 was called the Type 72. The 3A72 documentation applies to the 72.

Key Specifications

Bandwidth DC to 650 kHz
Deflection 10 mV/div to 20 V/div
Input impedance 1 MΩ // 47 pF


Type 72