• JC-SQ4 Bluetooth Receiver DAC Headphone Amplifier ESS9038Q2M DAC CSR8675 Bluetooth Support For LDAC
  • JC-SQ4 Bluetooth Receiver DAC Headphone Amplifier ESS9038Q2M DAC CSR8675 Bluetooth Support For LDAC
  • JC-SQ4 Bluetooth Receiver DAC Headphone Amplifier ESS9038Q2M DAC CSR8675 Bluetooth Support For LDAC
  • JC-SQ4 Bluetooth Receiver DAC Headphone Amplifier ESS9038Q2M DAC CSR8675 Bluetooth Support For LDAC

JC-SQ4 Bluetooth Receiver DAC Headphone Amplifier ESS9038Q2M DAC CSR8675 Bluetooth Support For LDAC

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JC-SQ4 Bluetooth Receiver DAC Headphone Amplifier ESS9038Q2M DAC CSR8675 Bluetooth Support For LDAC

Description:

JC-SQ4 adopts concise, novel and unique appearance design, with optical fiber, coaxial, USB, Bluetooth signal input. Adopt soft light OLED display, MCU software to control input mode switching, volume +/-, switch on and off and other functions. With current state memory function. The display can show the current input mode, the current mode signal sampling rate, and the current volume value. Very convenient to use. It uses CSR8675 Bluetooth solution, ESS9038Q2M decoder chip, two dual op amp filter outputs, and a PTA6120 amp professional chip to amplify the output. Can easily push 8-300Ω headphones. Op amp and headphone amp chips all use positive and negative dual voltage power supply, and wide dynamic frequency response. Bluetooth supports for AAC, CSB, APTX, APTX-LL, APTX-HD, LDAC lossless transmission protocols. Bluetooth supports up to 24Bit/96KHz sampling rate, surpassing CD tone. This decoder helps you build a mobile HIFI platform. We sincerely hope that the excellent sound quality of JC-SQ4 will bring you a different listening experience.



Features:

1. Imported relay. It is used to connect and disconnect the line output of your earphone. It has a protection output function. When the line outputs DC, the relay will be automatically disconnected to protect earphone from being damaged.
2. Two dual op amp filter outputs. One op amp is responsible for one channel, with better separation. Op amp plug-in design. You can replace different models of op amp 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 14V.
3. Independent power supply chip. Using 5 independent power supply voltage regulator chips, each part is independently powered to avoid mutual interference noise generated by shared power supply.
4. Power supply conversion circuit. It converts a single power supply into a positive and negative dual power supply to supply power to operational amplifier and headphone amp. The advantage of dual power supply is that the midpoint voltage of the op amp is more balanced, and the output of the op amp headphone amp chip is a linear AC voltage, which does not require isolation by a coupling capacitor. If the op amp and earphone amp chips working at a single voltage output DC, coupling capacitors need to be added for isolation, otherwise the sound quality and dynamics will be seriously affected.
5. Headphone amp output chip. Using TPA6120A 2 Class A and B amplifier chip, it is famous for its powerful output thrust and ultra-wide frequency response dynamics. It is widely used by domestic and foreign famous machines.
6. Display panel interface, high-precision integrated cable interface. Avoid cumbersome and cluttered wiring harness which not only affects the appearance, but also easily causes the interference of magnetic fields between wires, and makes various noises.
7. MCU chip. The brain of the whole machine cooperates with our company's software program to make the machine run perfectly and stably.
8. Digital signal receiving chip. Using AK4118 high-performance chip to provide high-quality digital signal conversion for the machine.
9. DAC decoder chip. Using ESS9038Q2M model, the chip has ultra-high performance digital-to-analog conversion capability, ultra-high density audio performance, fully balanced differential output, and better separation of left and right channels.
10. Bluetooth receiving module. Using CSR8675 high-end Bluetooth solution. Bluetooth supports a sampling rate of up to 24Bit/96Khz, with a sampling rate higher than 2 times CD, so that the quality of Bluetooth sound is improved, if the audio file of the Bluetooth transmitter is lossless and the Bluetooth hardware of the transmitter is good enough, the sense of listening has surpassed the performance of CD.

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


① Multi-function knob. Short press the knob to turn on. Press and hold for 2 seconds to shut down. In power-on state, short press the knob to switch the sound source input cyclically. Turn counterclockwise to decrease volume, and adjust it clockwise to increase volume. Before connecting your device, turn down the volume first to avoid damage to your device due to excessive output power.
② Display screen. Display current working status information. Input column indicates the current input mode, Fs column indicates the current input mode signal sampling rate, and Volume column indicates the current volume value.
③ 3.5mm headphone output. It can be connected to your earphone device with the corresponding plug, and 8-300Ω earphones can be used. It can also be connected to pre-amp equipment, power amplifier equipment, active multimedia speakers and other equipment. When used with different devices, please adjust the volume value to be suitable for use with your device.


④ Bluetooth antenna interface. Screwing on the external antenna can enhance the reception strength of Bluetooth signal.
⑤ Bluetooth status indicator. Red flashing indicates Bluetooth searching status. Steady blue indicates pairing has finished.
⑥ USB signal interface. This interface is for USB signal decoding, connecting to the USB port on PC side or the OTG interface on your mobile phone and tablet computer. Do not connect U disk or SD card.
⑦ Coaxial signal input interface supports 16-24Bit / 44.1-192Khz
⑧ Optical signal input interface supports 16-24Bit / 44.1-96Khz
⑨ DC power input socket, positive inside and negative outside (5.5x2.5mm). Input voltage 5V 2A-5A.

Specifications:
- Product size: 106 x 70x 25 mm (excluding protrusions)
- Signal input method: optical fiber, coaxial, USB, BT wireless Bluetooth
- Signal output mode: 3.5 headphone port line output
- Maximum output power: 300Ω/250mw (adjustable)
- Fiber support: 16-24Bit / 44.1-96Khz
- Coaxial support: 16-24Bit / 44.1-192Khz
- USB input support: 16-24Bit / 44.1-48Khz
- BT Bluetooth support: 16-24Bit / 44.1-96Khz (For AAC / SBC / APTX / APTX-LL / APTX-HD / LDAC)
- Bluetooth distance: no block greater than 20 meters (for reference only, related to the environment and the strength of the transmitter, subject to actual)
- Machine working voltage: DC 5V 2A-6A

Package Included:

- 1 x DAC Main Unit
- 1 x Power Adapter
- 1 x Power Cord
- 1 x Antenna
- 1 x Instructions

Note: Items in different colors will be delivered at random. Please make sure that you don't mind before purchasing. Thank you!


Display Status Introduction:
1. Input channel display bar displays the current channel mode.
2. Real-time sampling rate display, showing the sampling rate value of the current channel signal.
3. Volume display bar shows the current volume value.


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