easy to drive yes but i realy don`t think a smartphone can drive it LOUD and CLEAR like that.on my sister`s xiaomi redmi note 8 the m40x just sound quiet and narow unlike with ziku ,but i repeat,with the rock eq presset activated is what works for me...and yes the batery life is divine!The Ziku HD X9 is my daily DAP due to the great battery life (> 20 hours) and sturdy build. Can't complain much about the sound for the cheap price, I don't leave home without it nowadays.
I have to say though, I've auditioned other DAPs with better sound quality and better noise to signal ratio, but I opted for the better battery life of the X9 as I don't have readily accessible charging areas as I travel a lot.
I have the M40X and it is very easy to drive, even a low end smartphone can drive it, so maybe it's not a fair gauge of the X9's abilities. I've tried driving higher impedance cans and earbuds thru the X9, honestly X9 may not be the best option for higher impedance stuff. The successor of the X9, the X10, has supposedly an op amp and better sound, though the battery life is like 5 - 6 hours according to some headfiers.
it sounns at least better than my xduoo x2 wich is an amazing dap only zishan is left to compete at this price range of 30 to 50 in my opinion.sory for the hype guys it s just propably my first contact with ``audiophile`` sound that is.
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