B9Scrambler
Headphoneus Supremus
My friend loved Piston 2 but it broke. He tried my Tenore, M200, Singolo, Fidelio S2, and Soundsoul S-018 but none were bassy enough for him (he likes EDM).
Do KZ ATE, ED9, Soundmagic E80, Macaw, or anything under $50 have enough bass for him?
I'll suggest the SUR s808. They're best with a bit of EQ (very midbassy otherwise) but man can they pump out some intense bass. Cheap too. Can find them on AliExpress for around 15 USD.