Amplifier layout (after recapping job) It shows that it's made by Dorchester Electronics Limited in the US.
is the schematic diagram (1 channel shown) of the Columbia 300SS
amplifier turntable. The PCB is the same as the Longines Symphonette
but uses some different component values. Use this one only as a basic
-Year(s): Mid to late 1960s
-Amplifier type: Solid State (Discrete)
-Turntable brand: BSR Mini.
-Cartridge type: ceramic
-Features: Bass/Treble/balance controls -Extra informations: -Case: All metal
-Platter: Molden plastic
-Size: 14 1/2"W X 6 1/2"H (cover) X 11 1/4"D
-Status: Repaired. Sold.