These are not audiophile headphones but have impressive specs nonetheless. USD41.99 after discount code T2ONT3MQNEDZ - until 31 March. USD5.00 shipping. Currently out of stock for shipping outside of US and Europe - but said to ship in two weeks. No carrying case included but a generic hard case is available via Aliexpress for ~$5 (or the same case $19 from Mighty Ape).

 

EarFun app looks good with full equaliser.

 

Many decent reviews online - eg here and here.