IWISTAO HIFI MINI Tube Hybrid Amplifier Bluetooth 4.0 2x28W Output 6N1 Preamp APT-X Black

 IWISTAO HIFI MINI Tube Hybrid Amplifier Bluetooth 4.0 2x28W Output 6N1 Preamp APT-X  Black

This is a mini tube hybrid amplifier, and support Bluetooth 4.0, apt-x, also it has 2 groups RCA inputs. Here, it play music from CD player, there is a demo below.

IWISTAO HIFI MINI Tube Hybrid Amplifier Bluetooth 4.0 2x28W Output 6N1 Preamp APT-X 115/230V Black from IWISTAO HIFI MINIMART1 on Vimeo.

You can use it to play lossless music formats music or network streaming with music player which is compatible with APE or FLCA music format , to enjoy funs of HIFI music. We recognize it is a better companion of your smart phone, tablet PCs and other mobile devices to enjoy wireless fidelity music.

（It played under Bluetooth wireless connection）

   

It is Hybrid designs that Wistao Bluetooth music base station, its preamp adopt 6N1 dual triode tube, power amplifier using high-power integrated IC. This design combines mellow and beautiful sound of tubes with feature of high-power output of high-power integrated IC, its maximum power is up to 2 x 28W, enough to meet your listening needs.


Also simple design of two switches, one is Bluetooth input switch, the other is RCA input of CD signal. It’s up to you to choose using Bluetooth signal input or RCA line input. The right of volume knob allows you to adjust volume of speakers. The rear of Bluetooth music base station is equipped with a banana plug line input, and can switch freely according to your needs, to switch CD input mode.

More details, please find below

IWISTAO HIFI MINI Tube Hybrid Amplifier Bluetooth 4.0 2x28W Output 6N1 Preamp APT-X 230V Black

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 

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

A HIFI Wireless Bluetooth 4.0 Decoder with CSR8670 and AK4490

A HIFI Wireless Bluetooth  4.0 Decoder with CSR8670 and AK4490

Currently more Bluetooth receivers had hit the market, but it just a Bluetooth receiver only that can receive and output signal quality is similar with CD level when its audio soucing is enough better like as lossless format.

Do you need more high solutiong wireless Bluetooth decoder? It should be better than those Bluetooth receiver. Now, we developed a Bluetooth Decoder, which is based on Bluetooth 4.0 CSR 8670 and DAC AK4490. It had been hit market.

CSR8670 is one of the most stable, best Bluetooth chip, supports APT-X transmission. And  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” that greatly reduces sound degradation from noise shaping, achieving a flat noise floor up to 200kHz. An innovative design technique utilizing a symmetrical layout for the left and right channels prevents signal quality deterioration, and a 32-bit digital operation block provides full 32-bit processing, 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. The AK4490 accepts up to 768kHz PCM data and 11.2MHz DSD data, ideal for a high-resolution audio source playback that are becoming widespread in network audios, USB-DACs and Car Audio Systems.  

It is a high performance 32-bit stereo DAC that achieves industry leading level performance of THD+N (-112dB) for a voltage output with 120dB dynamic range. It is a member of the Audio 4 ProTM family that adopts a newly developed VELVET SOUNDTM technology and is the flagship product of a new generation 32-bit premium DAC called VERITA series. 

If do you think that  the perfotmance of this Bluetooth decoder is far better than normal Bluetooth receiver?  Actully, it is ture... The Bluetooth 4.0 version CSR8670 of the unit 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. 

HIFI Wireless Decoder with Bluetooth 4.0 CSR8670 and AK4490

HIFI Wireless Decoder with Bluetooth 4.0 CSR8670 and AK4490

HIFI Wireless Decoder with Bluetooth 4.0 CSR8670 and AK4490

HIFI Wireless Decoder with Bluetooth 4.0 CSR8670 and AK4490

Back View of HIFI Wireless Decoder with Bluetooth 4.0 CSR8670 and AK4490

Back View of HIFI Wireless Decoder with Bluetooth 4.0 CSR8670 and AK4490

Inside View of Wireless Decoder with Bluetooth 4.0 CSR8670 and AK4490

DAC AKM AK4490

OPA2604AP

 one of the most stable, best Bluetooth chip, supports APT-X transmission

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.

More details, please find HIFI Wireless Bluetooth 4.0 Decoder with CSR8670 and AK4490

A Key of Bluetooth Speaker or Bluetooth Amplifier --- Bluetooth module

A Key of Bluetooth Speaker or Bluetooth Amplifier --- Bluetooth module 

Bluetooth speakers or bluetooth amplifiers have become more and more popular now as wireless signal transmission. You could see them  every year at CES. At same time, bluetooth Technology had been improved from 1.0 version to 4.1 one now, it is can achieve CD level music for the bluetooth 4.0 version, and it is used hifi audio.You will not connect those signal input cable, only set up bluetooth connection between your bluetooth devices like as iPhone or android smartphone, tablet.Then, you can play stream music form your local disk or internel through WIFI, of course, you should install a music play, if it support to play lossless format such as WAV, APE, FLAC, APAC, it absolutely achieve CD quality. 

But do you know how it is used in PCB?  normally, it is soldered as a module where the bluetooth ic and other op ic will be soldered there, also the program will be burned on ROM inside previously.manufacturer purchase it from module supplier, which is customized by the supplier, for example display name on the host, prompt, volume..., and so on.We also provide those customizations. There is more stable and quality module that is made of CSR8645, which support apxt decoding.The moudles had been used in a lot of bluetooth speakers or amplifiers, like as FATMAN mini tube bluetooth amplifiers and other Bluetooth speakers by UK.Especially, the original manufacturer of bluetooth ic provide us strong support from PCB designing.

 It is better to start weaving your fishing nets than merely coveting fish at the water, right? If you want to  develop your high quality Bluetooth speaker or amplifier or modify your current audio system to ass wireless connection function, it will be a better choice.

This CSR8645 Rom Module Functions:

1. Bluetooth version 4.0 plus EDR standard specification.
2. Radio power: Class 2.
3. Support A2DP 1.2, AVRCP 1.4, HFP1.6(including WBS and Msbc), HSP1.2.,etc protocols.
4. Adopt CSR voice enhancing technology of latest sixth version CVC to realize noise reduction and echo cancellation.
5. Support multipoint connection (connection to 2 phone for voice and music)
6. Support CSR Secure Simple Pairing, Proximity Pairing and CSR Proximity connection.
7. Support user to define muliti-language voice prompt function.
8. Support voice dialing / rejection calling.
9. Support SBC, MP3, AAC, APT-X music format.

            10. Support output port: PIO / UART/SPI/AIO/SPK/MIC/USB.

            11. Built-in 16 bits stereo decoder, S/N of digital to analog convert is up to 95Db.

            12. Built-in DC DC conversion power management.

            13. Integrated Li-ion battery charging function, charging current is up to 400mA maximum.

            14. Smaller SMT package: 26.5mm*13mm*2.2mm.

            15. RoHS compliance.

 More details, please find http://www.aliexpress.com/store/product/CSR8645-ROM-Bluetooth-Module-Bluetooth-4-0-Mulitport-Output-Support-APT-X-Decoding-DIY-RoHS-Compliance/725205_1276174862.html

Or use this one with key board.

http://www.aliexpress.com/store/product/CSR8645-ROM-Bluetooth-Module-Bluetooth4-0-Mulitiport-Output-Support-APT-X-Decoding-With-Key-Board-DIY/725205_1644152718.html

Advantages of Bluetooth 4.0 for CSR --- Compared CSR BC57E68 and CSR8645

Advantages of Bluetooth 4.0 for CSR --- Compared CSR BC57E68 and CSR8645

Bluetooth technology has come to version 4.0. Undoubtedly it becomes a more and more trend or main stream that Bluetooth Speakers or HIFI Bluetooth Audios adopt Bluetooth chips CSR8645. It is a free that the ROM version of CSR8645 which build in a professional codec technology--- apt-x, it a special advantage for industry from cost view. In addition, what are others advantages of Bluetooth 4.0 technology compared with Bluetooth 2.1 technology? WISTAO technology specialized in Bluetooth Speaker and HIFI Bluetooth Audio designing，manufacturing and sale, we summarize it as below , through the charts below, you are able to compare differences between BC57E68 (Bluetunes Rom) and CSR8645, take a look.

Simply speaking, the CSR8645 Bluetooth version 4.0 with the following characteristics

A. HFP version 1.6;

B. AVRCP version 1.4;

C. Support multi-point connection, you can also connect two devices;

D. CVC version 6.0, echo processing is more powerful;

E. Supports voice prompts; supports simple voice recognition;

F. Faster charging;

G. Support IOS power display, can display battery volume of iPhone;

H. Supports AAC-LC and APT-X encoder;

I. Support USB sound card and limited input;

We also provide you the Bluetooth speakers and HIFI Bluetooth Audio Amplifiers based on Bluetooth 4.0 technology, they had been hit market since 2013.

Bluetooth4.0 NFC Stereo Speaker CSR4.0 Instantly Pairing Connection with NFC-enabled Smart Phones Support APT-X

HIFI Bluetooth 4.0 Tube Headphone Amplifier 2x2.5W 16 to 600ohms 6N3 tubes Pre-amp RCA Input HIFI Desktop Amp

HIFI Bluetooth 4.0 Tube Headphone Amplifier 2x2.5W 16 to 600ohms 6N3 tubes Pre-amp RCA Input HIFI Desktop Amp

HIFI Bluetooth Music Amplifier NE5532 Preamp 2SA1941 and 2SC5198 Power Stage Bluetooth 2.1 EDR 2X100W Transistor Amp Support AUX