BT39 Bluetooth Receiver Decoder - High performance DAC and sound quality - Uses the ES9039Q2M decoding chip. The sound is delicate, sweet, and transparent with strong detail, vivid soundstage, and expressive dynamics. The presentation is well suited to Bluetooth sources and can evoke a listening experience rivaling premium DACs. - The sonic character has been described as comparable in charm and dynamics to high-end DACs such as AK4499 EX. - Redesigned LPF and refined components - The LPF circuit in the decoding section has been redesigned to improve overall performance. - The audio capacitors contribute to a more delicate sound. - The filter uses a gold robe capacitor to achieve better performance and lower ripple. - USB Type-C input for digital connection - BT39 supports USB input via a USB Type-C port, allowing connection to a computer or mobile phone with a USB cable. - Strong value and compatibility for desktop systems - The BT39 design emphasizes cost performance, delivering substantial audio improvements that can complement large desktop computer systems. - Bluetooth performance and file support - The BT39 Bluetooth receiver decoder uses the ES9039Q2M decoding chip, and the sound is ES9038Q2M in terms of charm and dynamics. - The Bluetooth component uses QCC5125 and supports LDAC, and 24-bit at 96 kHz high-bit-rate transmission. - Power supply and analog performance - An internal power supply is central to achieving good sound quality. - The op-amp section runs on a +/- 12 V supply, ensuring reliable op-amp performance. Use scenarios - Scenario 1: Upgrade a desktop hi-fi or audio workstation - Connect the BT39 to a computer via USB-C for high-resolution digital audio, then output to an external DAC/amps or powered speakers for a noticeable improvement in clarity, detail, and dynamics. - Scenario 2: Flexible wireless listening with high-resolution audio - Pair Bluetooth headphones or speakers via the BT39, utilizing LDAC and 24-bit/96 kHz transmission for high-quality wireless listening from compatible devices. - Scenario 3: Home office or living room integration - Use the USB-C connection for digital input from a laptop or desktop, and stream Bluetooth audio to a nearby speaker setup, enhancing overall sound quality in multi-device environments.