The SP3 BT series employs a 3.5" carbon fiber woofer and a 1" silk tweeter, larger than typical products in its class. These larger woofers have an inherent advantage over smaller woofers in dynamics, projecting a larger soundstage, and other sonic attributes. Whether watching movies or listening to music, this woofer is truly capable of expressing the grandness of the audio even at louder volumes. Thanks to the Qualcomm QCC5124 Bluetooth chip, the SP3 BT supports multiple high-resolution Bluetooth codecs, such as LDAC/aptX Adaptive/AAC, giving you freedom and flexibility to choose how you listen. When using LDAC, you can experience high bitrate audio up to 990 kbs, fully letting you hear every last detail in your music. The FIIO SP3 BT not only provides a high-quality wireless transmission platform, but also supports wired digital ports including Type-C/COAX/OPTICAL. Through these high-definition lossless digital channels, you can fully unleash the SP3 BT’s potential.