IWISTAO Earphone Amplifier HIFI Solo with Bluetooth 4.0 CSR8670 32-bit DAC AK4490 Hardware Decoding Optical Inputs APT-X

After the Bluetooth decoder with hardware decoding hit market, we also have developed an earphone amplifier with  Bluetooth 4.0 CSR8670 APT-X, 32-bit DAC AK4490 Hardware Decoding, and Optical Input.

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.

At the same time, the unit is compatible with optical input, optical input devices can be connected to any other optical fiber output, such as televisions, set-top boxes, projectors, DVD player, CD player, sound cards and other digital computer. 

IWISTAO Earphone Amplifier HIFI Solo with Bluetooth 4.0 CSR8670 32-bit DAC AK4490

It has the features also as below.

1. Whole aluminum alloy casing.
2. Built-16M memory within CSR8670 chip
3. Adopted HIFI level op amp OPA2604 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.
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 OPA2604 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 module Bluetooth signals --- Bluetooth digital signal decoding --OPA2604 --AK4490 op-amp output

b) Fiber optic signal --- AK4490 decodes the received data --- OPA2604 op-amp output.

More details, please find IWISTAO Earphone Amplifier HIFI Solo with Bluetooth 4.0 CSR8670 32-bit DAC AK4490

If you want to know Bluetooth Decoder further, please find the blog 

A HIFI Wireless Bluetooth 4.0 Decoder with CSR8670 and AK4490