It is widely known that the LA-2A unique character is a result of the applied T4B photocell. In the original TELETRONIX design a electroluminescent panel provided a light source for the photo resistors. This component was very variable in parameters, and this affected the result compression and stereo image of the audio.
In IGS Audio we developed a new photocell parallel to the T4BX. By precisely selecting, testing and matching subcomponents used in the assembly of this photocell we have created a product line consisting of nearly identical devices in parameters and sound.