iBasso AMP8 Mk. 2
Audio-PH believes the ease of the Amp8 MKII upgrade was "to embody your skills and demonstrate them to a large audience", and MOONSTAR Reviews definitely seconds the added variety and sound quality. [See Product Desc. For More]
Based off the stock Amp11 MKII of DX300, a high 8 volt operating voltage grants AMP8 MKII excellent open-loop linearity, with the ability to effortlessly reproduce large dynamic swings in your music.
That's all backed by discrete buffers capable of 2 amperes output to form a potent power stage, able to maintain excellent drive into the ever decreasing impedances that are typical of bone conduction or electrostatic IEM hybrids.
Add Amp8 MKII to your DX240 for a controlled sub-bass boost and detailed emphasis in your upper midrange, while giving your big, transparent, Craft Ears and Empire Ears flagships the footing necessary for them to show everything they can do.