Digital Audio Broadcasting with CD quality sound
Digital Audio Broadcasting with CD quality sound

DAB is the third generation broadcasting after conventional AM, FM analog broadcasting .DAB is short for Digital Audio Broadcasting, which is close to CD quality sound, and the listener can listen to the radio non-interference completely.

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Sweat and Mellow Sound from IWISTAO Tube FM Radio Built-in 6P1 Power Amplifier
Sweat and Mellow Sound from IWISTAO Tube FM Radio Built-i...

 The tube FM radio used tube 6N3 as a high-level and mixing, tube 6C11 as the unit local oscillates,tube 6J4 as IF amplification together with 5pcs mid cycle inductances, and it has the advantages of high sensitivity, low noise. After stereo decoded by TA7343AP, then the signal will be amplified by tube 6N2 as a preamplifier. And power amplifier part, it used  6N2 to drive 2pcs tube 6P1 that is classic and famous application.

IWISTAO Tube FM Stereo Radio Built-in Power Amplifier

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IWISTAO Tube FM Radio with FM Super-regenerative Handmade Nostalgia Radio 6J1 + FU-25
IWISTAO Tube FM Radio with FM Super-regenerative Handmade...

This tube radio has two tubes, which adopt super-regenerative mode to receive FM radio signals. Has high sensitivity, Either high impedance headphones with nostalgia, but also through the line output jack. You may connect it to amplifier and computer sound card to access the playback, that expand the scope of application of the radio.

IWISTAO Nostalgia Tube FM Radio Tuner with FM Super-regenerative Handmade

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IWISTAO Tube FM Radio Tuner Board with Frequency Display
IWISTAO Tube FM Radio Tuner Board with Frequency Display

This tube FM radio head adopted tube 6C11, and its rectifier adopted tube 6Z4. Its signal reception and treatment adopted classical tube circuit, and used TA7343 as a stereo decoder that then result in stereo output. After stereo FM signal input power amplifier system for amplification, you will listen to FM radio with musical tube sound

IWISTAO Tube FM Stereo Radio Tuner Finished PCBA Preamplifier Version

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IWISTAO HIFI Interconnection RCA Cable
What is a HIFI Interconnection RCA Audio Cable?

Gennally, a HIFI interconnection RCA cable is made of 2 pcs pure copper RCA connecters which are made of copper-plated plug generally, copper shell, and advantages of copper shell can be shielded from external interference and a pair separated OFC wires cable instead of a pair of wires molded together, and then assemble them though soldering with high quality solder.

 

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Typical setup for a USB DAC system
Typical setup for a USB DAC system

A typical setup for a USB DAC system is shown above. We have two Firewire disks for our library (one is for backup). We use Firewire over USB drives because we don't want to overload the USB link. The output of the DAC is fed to a preamplifier or integrated amplifier and then to the amp and speakers.

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Video Demo: IWISTAO Tube Preamplifier Matisse Circuit 2x6N3 PMMA Casing Black Piano Paint Musical Flavor HIFI
Video Demo: IWISTAO Tube Preamplifier Matisse Circuit 2x6...
It is known as musical flavor for Matisse tube preamplifier, its sound quality is warm and transparent, graceful lines and excellent sense of hierarchy, clear and transparent elegant, rich musical and full overtones, musical feel strong, also loose and natural.
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How to DIY Your Shielded RCA Interconnect Cables
How to DIY Your Shielded RCA Interconnect Cables

These "better DIY RCA interconnects" are unbalanced and made using shielded instrument cable and high quality RCA plugs. This is a fairly easy DIY cable and one stereo pair of DIY interconnects can be put together in about one hour. You will not need any fancy materials or special tools to build this cable. Just some meters of good shielded instrument cable and high quality RCA connectors, a soldering iron and some good solder with flux, a handy knife and a good side-cutter to prepare the wires for the soldering process. The photos only is as an example to demo how to DIY shielded RCA Interconnect Cables.

HIFI RCA Cable

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History of Tube Amplifier
History of Tube Amplifier

Tube amplified sound is generally considered to be superior and preferable to transistor amplified sound, especially for the electric guitar. The tube sound is generally much warmer and more organic sounding than solid-state. Tube amplifiers are also far more responsive to the dynamics of a guitarist's playing (how hard she hits the strings). Tube amplifiers, when played hard, produce some desirable grit that solid state amps do not. The tube amp is the easiest way to get a classic sound out of your guitar.Tube amplified sound is generally considered to be superior and preferable to transistor amplified sound, especially for the electric guitar. The tube sound is generally much warmer and more organic sounding than solid-state. Tube amplifiers are also far more responsive to the dynamics of a guitarist's playing (how hard she hits the strings). Tube amplifiers, when played hard, produce some desirable grit that solid state amps do not. The tube amp is the easiest way to get a classic sound out of your guitar.

 

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What is aptX?
What is aptX?

CSR aptX audio coding technology replaces the standard audio codec Bluetooth employs for streaming stereo audio wirelessly from audio devices to headphones and speakers, delivering improved, high-fidelity sound comparable to the CD quality consumers have come to expect from their home entertainment systems.

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How Speaker Unit Works
How Speaker Unit Works

Speaker unit (also called loudspeakers unit ) push and pull surrounding air molecules in waves that the human ear interprets as sound. 

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Why do more audiophiles like class A tube amplifier?
Why do more audiophiles like class A tube amplifier?

Audio amplifiers in mass production typically use an integrated circuit to amplify the audio signal. Even though modern audio amplifiers reproduce audio signals with less signal distortion than their predecessors, some audiophiles prefer the "warm" tone a tube amplifier produces when it reproduces an audio signal. Except integrated circuit to amplify, many audio and power amplifiers sold for personal and commercial use contain electronic devices called transistors. Transistors came about as an intended improvement upon an older technology—the vacuum tube, used as an amplifier component since the early 1900s.

IWISTAO Class A Tube Amplifier

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New trends of HIFI digital audio development
New trends of HIFI digital audio development

Lossless compression music - APE, FLAC ......, etc., according to rate 1/2 CD compressed files for easy storage and network transmission, compression and decompression without sacrificing the original music details, so 80% network music is this format file, APE is copyright format, FLAC and  others are shared formats

New trends of HIFI digital audio development

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