Recent content by edu

Based on the existing reviews, WiiM Mini and Pro are using cheaper implementations for the analog output while Pro + is using a much better approach, comparable with Topping E30 and D10s.

Thank you, an interesting product. In my recent messages I was thinking about portable power banks only.

Could you provide a link to the powerbank, please?

Using linear regulators means wasting some battery capacity to produce heat. Unless the producer of a portable power bank brags about clean output voltage / suitable for audio equipments / something similar, it should be using dc-dc converters. Of course, if someone finds a model with linear...

If we're talking about portable power banks, like the Samsung one posted above, in most cases they're using multiple Li-ion cells (the voltage of each cell varies from 4.2V to 2.8V as it discharges). Also, the few ones I've disassembled have one thing in common: no room for large capacitors or...

All battery banks are using dc-dc converters for efficiency. Given their target (charging phones and other devices), it makes sense to use the cheapest approach and not caring at all about providing a clean output. If you can find objective tests results for some battery banks, please share them.