Characteristics of some popular audio valves

KT88.pdf

KT66.pdf

EL34.pdf                                     

EL84.pdf

ECC81.pdf

ECC82.pdf                                             

ECC83.pdf

EF86.pdf

Valve bases

Solid state

Mosfets for the output stage of high power audio amplifiers 

These devices replace the Hitachi 2SJ56 and 2SK56

BUZ901.pdf

BUZ906.pdf