SMSL offers with the SH-8s an affordable and efficient headphone amplifier. It uses OPA564 AOPs to deliver 2x6 W of power at 16 Ω with high accuracy. So it has no problem with even the most demanding headphones on the market. It also features a two-stage gain selector for greater versatility. Its linear feedback circuitry provides incredibly accurate sound. In addition, the SH-8s features both single-ended and balanced inputs and outputs.