Great sound starts with clean power.

As Bluetooth speakers chase a smaller body, deeper bass and longer runtime, the part most easily overlooked—yet most critical—is often the power supply you never see. Once ripple or noise enters the power, it can surface as background hiss and weaken dynamics, keeping even the best driver from reaching its potential.

Broadly, there are two supply routes: mini and entry models take a fixed 5V feed for light weight and low cost, while mid-to-high-end and portable models move to USB-C PD, so a single cable handles both power and fast charging. KTEC spans both ends—KSA-5W delivers clean, stable 5V, while KSA-35P provides 5–20V multi-step PD for higher power and universal charging.

Both use a low-ripple design, pass IEC/UL 62368-1 A/V safety, and build in OVP/OCP/SCP triple protection; the KSA-35P has already been adopted by a well-known international high-end audio brand for its Bluetooth/wireless speakers—a market-proven, reliable choice.

Stable, safe and reliable power for every precise output.