![]() ![]() This is achieved by using novel circuits (on which patents are pending) which automatically and instantly protect the amplifier. There are no circuit breakers, speaker fuses, or other resettable devices to impede the use of the Stereo 120 under any reasonable conditions of use or abuse. Thus it can be connected to source and speaker components and used with confidence in all conventional arrangements. The unit contains two 60 watt amplifiers on one chassis with a common power supply.Īlthough the Stereo 120 is a solid state device, containing transistors and similar semiconductors, it has been designed to be used under normal conditions without special safety precautions, just as if it were a high grade tube amplifier. The Dynaco Stereo 120 is an all silicon transistor basic power amplifier for use with separate preamplifiers such as the Dynaco PAT-4 or PAT-5, or for use with tape recorders or tuners such as the FM-5 or AF-6, which have their own volume controls. Available in voltage classes of 60 V, 80 V, 100 V, 150 V and 200 V, and in package types of D 2 PAK, D 2 PAK-7pin and TO-Leadless (TOLL), OptiMOS Linear FET reduce conduction losses, set up faster and have shorter intermissions. The RCA jacks and posts have also been upgraded which turns this amp into an absolute savage vintage beast. OptiMOS Linear FET MOSFETs prevent damage at the load by limiting high in-rush currents. 120A (Tj) Discrete Semiconductor Products - Transistors - FETs, MOSFETs - Single are in stock at Digikey. The circuits are clean, the cage has only a few minor dents or scratches and the caps and transistors sound amazing and strong on both channels. ![]() The resulting transistor shows extremely high packing density for low on-resistance, rugged avalanche characteristics and less critical alignment steps therefore a remarkable manufacturing reproducibility. ![]() This is an outstanding amplifier from the late 1960's with a very nice patina and it sounds absolutely fantastic. Description This Power MOSFET is the latest development of STMicroelectronis unique 'Single Feature Size' strip-based process. The modifications Frank does bring this already spectacular solid state amp more into the tube tonality with his Mos-Fet circuitry. This is a beautiful condition Frank Van Alstine modded Dynaco 120a which he re-named the Mos-Fet 120b at Jensen's Stereo Shop in Burnsville, MN. ![]()
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