A Bluetooth 4.2 Decoder with CSR64215 Plus ES9023 Hardware Decoding

A Bluetooth 4.2 Decoder with CSR64215 Plus ES9023 Hardware Decoding

After the Bluetooth decode with CSR8670 plus AK4490 DAC is launched, we would develop a similar one that is used CSR64215 plus ES9023, which is a smaller and compact, also is high cost effective. 

A Bluetooth 4.1 Decoder with CSR64215 Plus ES9023

It used Bluetooth 4.2 CSR64215 chip and DAC ES9023 chip, the previous implemented digital signal transmission thought wireless function, and support SBC, A2DPB, AVRCP, AAC, APT-X ( need your Bluetooth enabled devices support Apt-x also if adopt apt-x transmission) , the digital to analog conversion of audio output used a professional decoder chip ES9023 to play that the digital signal is decoded into an analog audio signal.

Bluetooth 4.2 Decoder's PCBAwith CSR64215 Plus ES9023

As you know, ES9023 is ESS's single-ended output DAC chip, but also  is very unique, simple one of their SABRE DAC series, is recognized the easist to sound good decoding chip. In the 3.6V power supply under our actual test, its output can be greater than 2Vrms, and no coupling capacitor structure, you will have to worry about looking for expensive coupling capacitors no longer , and do not need to worry about the capacitor to bring the audio distortion usually. In addition, we use 32ohm headphones to do actual test it can also be found very good drive, but the output will be slightly reduced. And for the connection with power amplifier, headphone amplifier and other circuits, it is just a piece of cake.

ES9023 uses the industry's advanced SABRE digital-to-analog conversion technology, this chip set the best sound quality, cost-effective in one, making it an ideal choice for digital-analog conversion. It also can be used in Blu-ray players, CD / DVD, HD set-top boxes, digital TV or audio receiving equipment and other products.ES9023 internal use of patented technology Hyper-flow (Hyperstream) architecture and time-domain jitter elimination technology, so that it can achieve jitter-free recording level of sound quality, dynamic range of 112dB.

You may use it refresh your power amplifier or upgrade it to get CD level quality sound with wireless way, a lot of audiphiles had enjoyed it...

Features

1. Whole aluminum alloy casing.
2. Built-16M memory within CSR64215 chip
3. Adopted HIFI parts and components.
4. Adopted imported original ST regulator, and digital power supply used independent of the LM1117 3.3 V regulator.
5. Adopted independent hardware decoding ES9023 decoder chip
6. Built power and signal indication on the front panel.
7. Adopted independent external Bluetooth antenna with high sensitivit
8. Signal flow: Bluetooth signal --- Bluetooth receiver module - digital shaping chip --- ES9023 decoder chip - output

More details, please visit,

IWISTAO HIFI Bluetooth 4.2 Decoder Stereo CSR64215 DAC ES9023 Hardware Decoding APT-X 3.5mm RCA Output CD Level Quality Sound

Wireless Bluetooth Class A Single-ended Tube Amplifier

Wireless Bluetooth Class A Single-ended Tube Amplifier 

Would you like to get a tube amplifier that is support wireless Bluetooth connection? If yes, you will play music through your Bluetooth enabled devices like as smartphone and tablet, or some notebooks, and then your can play lossless format music like as WAV, APE, AALC, FLAC,.etc after you install music player in your Bluetooth enabled devices. As you known, the sound of signal-ended tube amplifier can provide you warm, soft sound quality because its tube characteristics and class A single-ended outputs.

This is a class A tube amplifier with wireless Bluetooth 4.2 technology, its Bluetooth module adopted CSR64215 Bluetooth 4.2 chip which support supports APT-X lossless audio transmission, the transmission speed is faster and better sound quality.

Except wireless Bluetooth signal transmission, it also supports Aux-in at the back. With automatically audio signal switching function , it is able to effectively prevent crosstalk that using relay signal to switch signals, and the original signal aux can remain through state even without the power to the Bluetooth board. The automatic switching function that default is aux audio signals, it automatically switch to Bluetooth mode when Bluetooth signals input; However, when no Bluetooth signal or Bluetooth playback pause automatically, signal transmission switch to aux mode signal.

Wireless Bluetooth Classa Signal-ended Tube Amplifier

Back view of Wireless Bluetooth Classa Signal-ended Tube Amplifier 

Lighting of Wireless Bluetooth Classa Signal-ended Tube Amplifier 

The tube amplifier adopted vacuum tube 6P1 which is a special audio tube is used to produce a small single-ended Class A tube amplifier with a mellow natural sound, sweet and warm, especially when listening to the vocal performance is very rich, very good acoustic performance, transparent and you will not be tired even listening for a long time. Use it to listen to the human voice, piano, strings, zither, etc., more natural, never tired.

This small single-ended Class A tube amp adopted tube 6n2 as a preamplifier, 6P1 as power stage output, its design is simple and the elegant, suitable for placing in the study, bedroom ..., so relax, and you can truly feel the music mood, listen to the voice of the soul.

More details, please visit the link,

Tube Amplifier Wireless Bluetooth 4.2 Single-ended Class A Desktop 6N2 Preamp 6P1 Power Stage 2x3.5W APT-X