Hello to the whole community, a greeting from me and in advance thanks to the next response. Out there discarded I have a vintage amplifier, march Technics SU-Z1. Which has the amplified integrated damaged. I recently found it and plan to fix it, the integrated one that owns is a Sanyo STK2028 of 16 pins. Order by Market Free the piece and a few days I arrived, but with a problem. The integrated one that came to me was a Sanyo STK2028II of 22 pins. I could not complain because it was my mistake because the publication emphasized that it was that model that sold me. I have been investigating the integrated STK2028II and I have seen that it is better than the STK2028 in design and power, and also saw in another post in this same forum that if it is possible to install the STK2028II instead of the original. But I doubt it is. How can I install it if they are a number of different pins? Is there a diagram of both integrated circuits to compare? Or do I simply match the 16 pins of the STK2028II? I would greatly appreciate the next answer, attached also to this I added the Post where it says if you can install the STK2028ii instead of the STK2028. http://yoreparo.com/audio/audio/preguntas/195493/hola-soy-nuevo-y-necesito-ayuda

Hi Axxis, in fact there are several queries about these cases of amplifiers of this brand and family, in the pdf is all the technical information needed, as well as its internal configuration of the STK for reliability in adaptations between one and another, Regards.