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They definitely need a decent powerful amp to drive them as their sensitivity is quite low. I use an old Marantz AVR in stereo config, with Chromecast Audio as source and they sound very good with emphasis towards mids, so might need a little EQ to bring up the highs and lows. Bass is very good and punchy considering the size of the drivers. So, all in all, very happy with them, especially considering the price.
I got this one on sale at 69AED. The sound it muted/muffled for some reason. I would use it for signal testing, not for listening audio/music. I would not recommend it at full price AT ALL, and not for music at any price. Cheers