However, to achieve this feat, they typically rely on a high-impedance earphone to produce an audible sound with very little current. These earphones are hard to find, and thus can be expensive.
The result is a very neat unit far better able do drive high-impedance headphones than the output from an unmodified DAC, but still looking as svelte as any commercial product. We like it.
[Easily handles low or high impedance headphone]: For a total power output of up to 1.5 W under a 32Ω load, and up to 20Vpp at 300Ω, K5Pro ESS desktop amplifier can easily handles any low or ...