If you're the proud owner of an original Quad II power amplifier then CT Audio is offering a newly developed PSU capacitor block which can directly replace the original Quad item. Said to offer gains in resolution, larger soundstage width and depth, plus faster transients, the upgrade is simply mounted on a bracket which in turn mounts behind the original badge using the same screw holes and fixing hardware. Once the original power supply capacitor has been removed of course...
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