100 In stock
HIFI Bluetooth Decoder
IWISTAOHIFI Bluetooth 4.0 Decoder Stereo USB PCM2076 or SA9023 Output CSR8670 32-bit DAC AK4490 Hardware Decoding Bluetooth Optical Inputs Support APT-X Transmission
Model No: WHFBR-A4490-USB
This is a Bluetooth decoder with Bluetooth 4.0 CSR867 and DAC AK4490. The Bluetooth 4.0 version CSR8670 implemented digital signal transmission thought wireless function, the digital to analog conversion of audio output used a professional decoder chip AK4490 to play that the digital signal is decoded into an analog audio signal, and finally OP amplified the analog audio signal and output it.
Currently, the sound quality of CSR8670 is one of the most stable, best Bluetooth chip, supports APT-X transmission.
AK4490 is a new generation Premium 32-bit 2ch DAC with new technologies, achieving industry’s leading level low distortion characteristics and wide dynamic range. The AK4490 integrates a newly developed switched capacitor filter “OSR Doubler”, making it capable of supporting wide range signals and achieving low out-of-band noise while realizing low power consumption. Moreover, the AK4490 has five types of 32-bit digital filters, realizing simple and flexible sound tuning in wide range of applications.
1. Whole aluminum alloy casing.
2. Built-in 16M memory within CSR8670 chip
3. Adopted HIFI level op amp OP275 as output.
4. Adopted HIFI parts and components at signal input and output, such as 1% metal film resistors, capacitors, audio ELNA and Nichicon capacitors, Phil ips CCB film small Signal filtering capacitors, and gold-plated RCA audio output jack.
5. Adopted imported original ST regulator, and digital power supply used independent of the LM1117 3.3 V regulator.
6. Adopted independent hardware decoding AK4490 decoder chip. And USB adopted PCM2706, support 16bit 48k sampling.Or, SA9023 support 24-bit 96K sampling.
7. With op amp socket, you can exchange your favorite OP according to your needs to use different styles HIFI op amp. Currently, the output chip is original OP275 op amp.
8. Built power and signal indication on the front panel.
9. Adopted independent external Bluetooth antenna with high sensitivity.
10. Automatic doors to receive the first optical fiber, has a good dust-proof.
11. With an input switch to easy switch two input signals, Bluetooth and optical. The two inputs, Bluetooth + optical input, you can connect any digital device family.
a) Bluetooth signals--Bluetooth module --- Bluetooth digital signal - --AK4490 decoding-- OP275 op-amp output
b) USB signal ---USB module (PCM2706 or SA9023)--- AK4490 decoding --- OP275 op-amp output
1. Bluetooth chip: British CSR8670 chip
2. Receiving distance: Accessible straight-line distance of about 5-8 meters, it is not supported through the wall.
3. DAC: AK4490
4. USB: PCM2706 or SA9023
5. OP275 op amp output
6. USB: PCM2076 support16-bit 48K sampling; SA9023 support 24-bit 96K sampling
7. Dimensions (L x W x H): 137mm x 115mm x 58mm
8. Cross Weight: 1.2 kg
9. Color: Silver
10. Working voltage: AC 220V / 50Hz
Power cord x 1
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