I know I'm coming to the party late, but I'm here now ... if anyone is still listening. I am frankly astonished that responses to an inquity about the Quatre Gain Cell is discussed as though it were a DS-250 power amp. However, the Gain Cell I bought, still have (serial 1011) and still use is a pre-preamp used to amplify the sub-millivolt output of a moving coil phono cartridge. It's powered by three "D" cell batteries. I was looking for a schematic for this product and stumbled upon this thread, among others. My Gain Cell finally died after about 40 years of service (left channel is about 30 dB down from the right channel). I can troubleshoot and fix it if I have a schematic. Is anyone familiar with THIS Quatre Gain Cell? Until this day I never knew it even had a model number ... everyone just called it the Gain Cell. But is does have one, silk screened on the back: DG-1. I could sure use a schematic for it. I really like the sound.
Thanks,
Lanny T.
Thanks,
Lanny T.