It is widely known that the LA-2A unique character is a result of the applied IGS Audio T4Bx 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. IGS Audio developed a new photocell parallel to the T4BX. By precisely selecting, testing and matching subcomponents used in the assembly of this photocell IGS has created a product line consisting of nearly identical devices in parameters and sound.
- Attack: 10 ms
- Release: 60 ms for 50% release
- Fequency response: 20Hz - 20kHz
- Used for: IGS One Leveling Amplifier, IGS One LA500, Teletronix LA2A, LA3A