A nice 2270 was on the bench for restoration/upgrade of the power supply, preamplifier, power amplifier and phono stages. Main Power Capacitors The original Elna 9,000µF/55V capacitors were replaced with Kemet 15,000µF/63V capacitors. Note that the original capacitors measured ~11,800µF at time of removal (vintage capacitors were often specified as -10%, +50%). The new capacitors were installed with a "star" ground (to minimize noise), instead of having the individual ground wires attached to the buss bar between the main capacitors in the original configuration. Also, the rf capacitors on the bridge rectifier were replaced with same value (0.22µF) XY safety capacitors.