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Some power amplifier needs temperature monitoring.Some amplifier needs fan control like ALPHA BB.They´re builders who want VU-Meter or FFT real time visualization.All power amplifier needs AC main power filtering; perhaps controlled powering.Some power amplifier owner needs DC blocking.All power amplifiers needs inrush current limiter.Power amplifiers works with 115/230VAC 50/60Hz.Some owners wants volume control.And at last (but not least), some owners prefers symetrical inputs.
I already do, but a balanced one (plus a DC blocker trap filter in front of it) that looks like this internally.[IMG] https://www.computeraudiophile.com/uploads/monthly_2017_09/20170926_194113-1.jpg.465d8fe5474a6cbd36a0b90570ac9dea.jpgIt is connected to this star-earthed power distributor.[IMG] https://www.computeraudiophile.com/uploads/monthly_2017_09/20170926_193942-1.jpg.ee5469d436c687ac7c13ff8f640592b0.jpgThis balanced *floating* isolation transformer together with the LT3045s in series is actually the biggest reason why I want to build my LPSUs.As you can see on the picture there is a switch on the balanced isolation transformer where I can choose to *float* or *ground*. No contest in my setup. *Floating* sounds by far the best.
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