Tektronix 5A20N Differential Amplifier, plugin fits the 5000-series mainframes

Tektronix 014-0029-00 Accessory Hanger for 134 Current Probe Amplifier

TEKTRONIX 5A15N SINGLE CHANNEL AMPLIFIER 2 MHz for 5000 SERIES SCOPES, Opt 83

Tektronix 5B10N Time Base Amplifier Test Panel

TEKTRONIX MODEL 5A18N DUAL TRACE AMPLIFIER PLUG-IN

Tektronix 7A26 Dual Trace Amplifier 'Not Tested'

Tektronix 151-0464-00 TRANSISTOR,PWR; BIPOLAR,NPN;100V,3.0A,3.0MHZ,AMPLIFIER;TIP

Tektronix 7A26 Dual Trace Amplifier Plug-In Module