This IEM is owned by my dear friend, Inks. I should thank him for all the hard works.
Monoprice 9927 is a black version of the well-known budget IEM, Monoprice 8320. Priced at an eye-popping $7, 9927 comes feature-packed: sturdy built quality, fabric cable, and most importantly, a 14mm wide electrodynamic transducer... How can you ever possibly go wrong with such value?
CON: The resonances at 3 kHz and 5 kHz are quite audible. In addition, 9927's bulkiness makes insertion quite tricky.
ON SECOND THOUGHT #4: As this IEM can be fine-tweaked by equipping with different ear sleeves and modifying internally, detailed sleeve comparison & modification tutorial will be provided separately.