Profile: DC-Daylight Ltd. provides electronic engineering design services. We provide valves for sale, Quad Hi-Fi Stuff, valve data, leak stuff, valves versus transistors, classic CD player stuff and loudspeaker stuff. The control and display PCBs mounted on the front panel uses component leads to link both sides of the board. Tantalum and solid aluminium capacitors are used for the op-amp supplies. Dynamic testing & comparison of valves using a TEK 576 curve tracer with external heater supplies and test jigs. The bushes are used to connect from the ground plane of the PCBs to the other side of the boards and depending on which ones fail the player.