If you stream your music and want better audio than a Bluetooth speaker can offer, the WiiM Amp Ultra is the way to go.
Abstract: This article presents mixing receiver of the low noise amplifier with back-gated QVCO using double balance mixer with doublers to merge low noise amplifier and LC-resonator quadrature ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback