JC-SQ5 Desktop Bluetooth DAC Decoder BT5.0 CSR8675 & ESS9038Q2M Support For LDAC/APTX HD Assembled

JC-SQ5 Desktop Bluetooth DAC Decoder BT5.0 CSR8675 & ESS9038Q2M Support For LDAC/APTX HD Assembled


Description:
JC-SQ5 adopts concise, novel and unique appearance design, with coaxial, USB and wireless Bluetooth signal input. Integrates soft light OLED display, MCU software controls input mode switching, previous song, next song, play/pause, switch on and off and other functions. With current state memory function, automatic power-on function when power on. The display can show the current input mode and the current mode signal sampling rate. Very convenient to use. It adopts CSR8675 Bluetooth solution and ESS9038Q2M decoder chip. Three dual op amp designs, two dual op amps are responsible for the filter output of each channel, and one dual op amp is responsible for amplifying the output. The power supply of op amp all adopts positive and negative 15V dual voltage power supply, wide dynamic frequency response. Bluetooth supports for AAC, SBC, APTX, APTX-LL, APTX-HD, LDAC lossless transmission protocols. Bluetooth supports up to 24Bit/96KHz sampling rate, surpassing CD tone. The decoder helps you build a mobile HIFI platform. We sincerely hope that the excellent sound quality of JC-SQ5 will bring you a different listening experience.


Features:
1. Control panel. Switch button, function operation navigation key, and OLED display are all in one, simple and stylish.
2. MCU chip. The brain of the whole machine cooperates with our company's software program to make the machine run perfectly and stably.
3. Power conversion circuit. It is responsible for converting a single power supply into a positive and negative dual power supply to power the op amp chip. The advantage of dual power supply is that the midpoint voltage of the op amp is more balanced. The output of the op amp headphone amp chip is a linear AC voltage, and no coupling capacitor isolation is required. If single-voltage op amp and headphone amplifier chip output DC, you need to add coupling capacitor isolation, otherwise it will seriously affect the sound quality and dynamics.
4. Independent power supply chip. Using 5 independent power supply voltage regulator chips, Bluetooth module, DAC decoder chip, MCU software chip, digital signal receiving chip, relay. Each part is independently powered to avoid mutual interference noise caused by common power supply.
5. Bluetooth receiving module. Using CSR8675 high-end Bluetooth solution. Bluetooth supports sampling rate of up to 24Bit/96Khz, with a sampling rate higher than 2 times CD, which improves the quality of Bluetooth sound. Hearing has surpassed the performance of CD.
6. Three dual op amp designs. Two are responsible for filter output, one op amp is responsible for one channel, and the separation is better. One is responsible for amplifying the output, and the two op amps that filter the output use a current feedback circuit architecture, which is not an ordinary negative feedback circuit. The structure of the current feedback circuit is more complicated, of course, the dynamic is better than the negative feedback, and the balance is higher. Op amp plug-in design, you can replace different types of op amps at any time to get different sound quality effects. Supports all models of dual op amps. The op amp power supply is plus or minus 15V.
7. DAC decoding chip. Using ESS903802M model, the chip has ultra-high-performance digital-to-analog conversion capability, ultra-high-density audio performance, fully balanced differential output, greater output amplitude, wider dynamics, and better separation of left and right channels.
8. Digital signal receiving chip. Using AK4118 high-performance chip to provide high-quality digital signal conversion for the machine.

Attention:
The above content is for reference only, and the final interpretation right belongs to our company.


Interface & Instructions for Use:
①Power standby button. The machine automatically turns on when it is powered on by default.
② Display window. Input: input mode. BT Play indicates current Bluetooth mode, and USB Play indicates current USB decoding mode. The large number in the middle shows the current digital signal sampling rate.
③ Multifunctional navigation key. Can swing up and down, left and right, and press in the middle, toggle up to switch to BT Bluetooth mode, toggle down to switch to USB signal decoding mode (only supports PC decoding or 0TG decoding, not U disk). Press the left side to play the previous song for Bluetooth, and press the right side to play the next song. Press in the middle for Bluetooth play/pause. Attention: The previous song, next song, and play/pause functions are only valid in Bluetooth mode.

④ Left channel analog line output. Connect to power amplifier, preamp, amp or active speakers.
⑤ Right channel analog line output. Connect to power amplifier, preamp, amp or active speakers.
⑥ Coaxial digital signal interface. This interface supports digital signal output or input. The specific method of use is: when Bluetooth or USB mode is in use for connection, this interface is digital signal output. When the Bluetooth or USB mode is not connected and not used, this interface is for digital signal input. Whether the machine is set in BT or USB mode, it can decode coaxial digital signals.
⑦ Bluetooth antenna interface. Screwing on the external antenna can enhance the reception strength of the Bluetooth signal.
⑧ DC power supply input port. Input voltage range: DC5-15V, above 2A. Positive inside and negative outside (5.5x2.5mm).
⑨ USB signal interface (MICRO). This interface can only be connected to PC-USB decoding or 0TG decoding, not to U disk SD card.
⑩ Bluetooth status indicator. Red flashes means bluetooth is in searching stat. Blue is always on means that it has been paired and connected.

Product Specifications:
- Product size: 106 x 70 x 25 mm (excluding the sizes of protruding parts)
- Signal input method: Coaxial, USB, BT wireless Bluetooth
- Signal output mode: Coaxial, RCA analog line output
- RCA output signal: 2VRMS
- Coaxial output: 16-24Bit/44.1-96Khz
- Coaxial input support: 16-24Bit/4.1-192Khz
- USB input support: 16-24Bit/44.1-48Khz
- BT Bluetooth support: 16-24Bit/44.1-96Khz (For AC/SBC/APTX/APTX-LL/APTX-HD)/LDAC)
- Bluetooth distance: about 20 meters without blocking (for reference only, related to the environment and the strength of transmitter, subject to actual measurement
- Machine working voltage: DC 5-15V, 2A-6A

Package Included:
- 1 x Set of Bluetooth DAC

Note:
- Items with Black or Silver panel will be delivered at random. Please make sure that you don't mind before purchasing. Thank you! 
- It is assembled and ready to use.