This is IWISTAO's Blogger,and for IWISTAO HIFI MINIMART, which is about Tube Amplifier,Output Transformer, Power Transformer, Speaker enclosure, and Bluetooth Technology, HIFI Audio and related accessories and the information like as Bluetooh Speaker, HIFI Bluetooth Earphone,HIFI Bluetooth Audio, HIFI Bluetooth Tube Acoustics,, and other populor electronics consumer products,.etc.
Are you afraid that there isn't enough power for tube amplifier?
Sometimes audiophiles are afraid that there isn't enough power for tube amplifier? Now, you don’t be afraid of it. If there is a tube amplifier with output power up to 2 x 50W, that will be ok.
It is a mono-block integrated tube amplifier with 2 x 50W high output power with high cost effective, which is made of pure tubes, adopt 2pcs 12AT7 plus 2pcs 6N8P to drive 2pcs FU13, and its recrifier adopt tube 5Z4P.
Tube FU13 belongs to antique one and is equeal to tube 813, which is a direct thermal beam shot tetrode with thorium tungsten cathode, graphite anode. In the radio equipment, it can be used for the oscillator power amplifier tubes, and its using frequencies are up to 30MC. When it is used as a power amplifier (such as Class AB), its output power is up to 300W or above, it is high reliable, excellent linearity, and not only does it perform tigers’ roaring and thunder exhaustive, but also can perform thin piano voice with detailed and delicate, it is the master of tube amplifier.
FU13 sound is very good, power and life are outstanding, air sense and sound field is far better than with that cannot be compared, you may not want to listen to small power output tube after listeningFU13.Due to its high power output, it can drive high power speakers that tube amplifierwith lower output can't drive.It is the first choice to drive low-sensitivity, high-power and high-end speaker.
Would you like to use a HIFI pure digital amplifier that support digital ports without a dedicated DAC? This one may be suitable for you.
This is a pure digital HIFI amplifier, that is amplified the pure digital signal directly and reduce intermediate converting. Specially, it support WIFI connection with your smart phones and tablet PCs directly, to connect the amplifier directly through WIFI. The amplifier interface is readily available, strong power, high efficiency, and green power. Compact and stylish, it is a good choice for forming a desktop audio. Sound performance, high-frequency positioning accuracy and no burr edge; middle frequency performance is thick, medium density; low frequency is jumping full force, fast response, high power output, large dynamic. Equipped with headphone output port, it can be used as a headphone amplifier also.
Stereo 2X150W HIFI Pure Digital Amplifiers with Coaxial Optical USB input
Features
1. Use of the American TI (Texas Instruments) HIFI pure digital DSP chip TAS5548 + TAS5614 asynchronous architecture.
2. High resolution of the sound field, accurate positioning instruments, structured. Have asynchronous digital processing capability, automatic identification, and 32k - 192k seamless transition.
3. Equipped with an infrared remote control, five buttons, including the switch, volume, channel selection three kinds of functions.
4. Selected HIFI material. Whole metal casing;10A high current DC socket; high-quality input and output terminals; aluminum knobs, FeSiAl inductors, NCC Black Edition capacitors with high-frequency low resistance.
Product Specifications
1. Output Power: 2 x 150W (4ohms)
2. THD: 0.01% (35v / 1W)
3. SNR :> 95dB
4. Dynamic Range :> 105dB
5. Output Impedance: 4 - 8 ohms
6. Operating voltage range: DC 15V-35V; recommended DC32V (No including power adapter)
7. DC output plug dimension: inner -- " +", outside -- “-”; and outside Diameter is 5.5mm, Inner Diameter is 2.5mm.
8. Popularly Digital Inputs: Coaxial / Optical (24bit32k - 192k).
9. Headphone amplifier: 40mW power under 32Ω. Also headphone output can be set as another audio output for subwoofer to form 2.1 speakers system.
10. Original software control speaker protection: Optocoupler isolation outputs for each channel independently detect to protect your valuable speakers.
Audiophile‘s DIY is a fun, but also is an
attitude to life. You can DIY, get your unique product, rather than a
mass-produced production. When your unique design by DIY and ultimately, that
is how happy thing ah!
But sometimes no all DIY ideas can be
realized, such as lack to some critical equipments, and these devices are
basically large, expensive ... or local manufacturers provide only high-volume
production, who cannot make single one or small quantities of customized
production based on your requirements can be. For example, when making or DIY
tube amplifier, often the holes are opened on the top plate, frankly to say, this
job, if without the special equipment to do, it may be a difficult task. Or you
want to make the holes on a pure copper, which is more difficult to complete.
However, these seem more difficult to do,
now it can be more easily accomplished. We now introduce such a customized
service to solve the problem that quantity from one piece.
You just need tell us your requirements
with your drawing, we may accept 2D or 3d format, CAD (2D) format drawings like
as dwg, dxf, pdf include parts precision tolerances, surface treatment and
other special requirements or processing equipment. CAD drawing format; 3D
model formats include Sldprt, step, igs, stp, x-t, prt. And, parts’ material
may be aluminum, copper, stainless steel, or plastic.
Through pre-sales communication, we have an
offer for you. After you complete online payment, we quickly complete your
order until delivery.
HIFI Preamplifier with 3 Ways Active Electronical Crossover Linkwitz-Riley Filter
Although many audiophiles put a lot of money and efforts to preamplifier, unfortunately they may experiences a little frustration in final output. It is hardly difficult to solve this problem to use excellent pre-divider circuit of preamplifier plus multiple power amplifiers, our series of electronic crossover board and amplifier board can perfectly realize your dreams! There is a HIFI preamplifier with 3 ways electronical crossover，whose PCBA is refer to the ESP company by US, which is set to six-channel stereo output structure to output left and right channel stereo signal, this is, output treble of left and right channel, midrange and bass of left and right channel, you can directly connect it with 6 channel amplifier circuits then drive your HIFI speakers. Pre-electronic crossover ensures original and natural sound through separated frequency of pre-amplifier small-signal, then drive power amplifier directly to push speakers, allowing you to enjoy the atmosphere of the studio's site.
Crossover PCBA is constituted by renowned Linkwitz-Riley filter. Linkwitz-Riley filter, mainly for the active filter circuit, for example, it is used in many sophisticated multi-way electronic crossover systems. The characteristics of this filter is up to 4 stages attenuation slope, in other words, every one octave frequency sound energy will be attenuated 24dB, i.e. attenuation slope of -24dB / Oct (Oct ie Octave, an octave interval of the mean). Meanwhile, in the entire audio band (20Hz-20kHz), Linkwitz-Riley filter has a very flat phase response, which is far better than Butterworth filter after filter signal, no phase distortion, which is widely admired by audiophiles.
The speakers adopt obconic design, dual-channel 3D sound technology, full rubber side speakers, low frequency enhancement technology, and demonstrated extraordinary sound quality.
Through the music player volume and tone control water dancing.
Maybe it can increase the fun, When you take your leisure time...
Its operation is easy, power supply from USB of your computer or notebook or using 5V smartphone power adapter, then input music with a 3.5mm jack cable. After then, enjoy it!
After the previous version of this Tube FM Radio Head hit market, we have upgraded it with the new version, and keep its features of high sensitivity and high fidelity sound.
Now we added a digital display, you can display and adjust frequecy point of FM station.You only solder it on the main board-- tube FM radio haed board, and short the wire of signal input, the digital display board can induce the FM point and display it, so easy!
Create beautiful sound from preamplifier and output strong power by power stage
Tube 6N3 is a medium u double triode, which
is thick tube taste, and use to make tube preamplifier or tube headphone
amplifier. Its performance parameters are same as the United States 5670,
Russia 6H3, do it can be replaced by them directly.
Tube 6N3 is indirectly heated oxide cathode
twin triode type, mainly used for high-frequency voltage amplification. Its
internal structure is fully symmetrical, which makes 6N3 has excellent
high-frequency characteristics, and sound localization. There was a shield,
which makes 6N3 has a high Signal to Noise Ratio, which is very important in tube
preamplifier designing. If you want to make a tube preamp, AC noise is loud, even
its sound good, always fly in the ointment. But 6N3 has shielding layer, let the
murmurs can’t be hardly heard when you touch your ear to speaker. As its distortion
is even-order distortion, it let the sound of 6N3 is more comfortable when you listen
music for a long time. At the same time, it can significantly improve
distortion that the output of 6N3 adopts current feedback, let its sound be high-fidelity,
and taste particularly strong tubes, musical and strong infection.
On the other way, TDA1521 is low distortion
and high stability chip by Philips designed. The power output of TDA1521 is 2 x
15W at AC ± 16V voltage, impedance 8Ω, its Input impedance is 20KΩ, input
sensitivity is 600mV, SNR is up to 85dB. Also, the circuit set up functions of waiting,
muted, overheating protection, low offset voltage, high ripple rejection and
low thermal resistance, excellent resolving power of high frequency and low
intensity. Its pure transparent sound, intensity White chunky bass, treble
clear and bright, very tube charm.
Therefore, this hybrid tube amplifier is 6N3
as a preamp, TDA1521 as a power amplifier; so that the two parts complement
each other, exert hybrid tube amplifier characteristics, namely to create
beautiful sound from preamplifier and output strong power by power stage.
Further, that is, the preamp section of power
amplifier to use tubes amplify sound signal, enabling the input audio signal
has a good sound performance as bright treble sound, full midrange, mellow and
elastic bass, relatively "warm" sound and high dynamic range, with
sound natural, lifelike characteristics, while overcoming tube amp music
playback seem stiff enough with compared to transistor amplifier; the power amplification
section to use transistor or power amplifier IC amplify the sound signal then output
to ensure the speed and power to overcome pure tube amp sound "sense of
speed" is not strong when playing fast-paced music does not make satisfied
people's weaknesses.
The hybrid tube amplifier has three kind of
signal inputs, CD , Aux and support U disk, SD card that support MP3 / WMA format
files playback. You can connect the amplifier with PC or notebook, smartphone to
play lossless format music like as WAV, FLAC,APE that played by music player through
aux input as a desktop audio or PCHIFI amplifier, it will give hifi music enjoin and excellent experiences.
Workmanship and choice of materials are
very cautious, used a double-sided fiberglass PCB, low loss transformers,
excellent vacuum tube and full brushed aluminum casing. Sound authentic, no
deliberate modification, nor omission, is a good partner of full-range speaker.
Internet technology had changed our life now.But radio always company us from its born to now, and it always keep up with the times, its family has new member -- WIFI radio except Short Wave, Medium Wave, FM one that can receive ten thousand stations from internet to play stream medias.So, you can listen to the world except your mother language.
Normally, the popular radio stations had been burned inside, and you only select a storaged station and play it, or add your favorite station into the radio by yourself.You can listen hot news, pop music, talk shows, and so on. Of course, it support FM radio,wireless connection that become more and more popular now. Also more functions had been added into it, like as Clock Alarm function, Snooze, maybe some models intergrated with Bluetooth funcion, you can use it as Bluetooth speaker.
There is this kind of WIFI radio now. The casing of this WIFI Radio is made of wooden, so it can achieve better quality sound, support Aux in and earphone output.
It is just a nostalgic mood for tube stereo FM radio head kit
Maybe, it is just an other nostalgic mood for the tube FM radio head, even most of FM radio that is made of ICs today. But, When you put the tube FM radio head or use a casint to install it inside,and then turn tuning the quadruple air capacitorto listen, it seems to have returned to the old days of childhood, everything becomes more and more comfortable.
At this moment, you are listen the warm and soft sound from it, perherps broadcast content has become less important, it is important that but it is one with the thoughts that fly mood. . . . .
This tube FM radio head kit had been hit market now, you only will connect a power transfomer, amplifier system, speaker. Of course, it is best that the tube radio head kit is installed in a casing, we will release a completed tube FM head later.
The upgrade version
The previous version
This tube FM radio head adopted tube 6C11. Its signal reception and treatment adopted classical tube circuit, Exclude the mono FM signal output, it also used TA7343 as a stereo decoder that then result in stereo output if you need listen stereo FM signal. After FM signal input power amplifier system for amplification, you will listen to FM radio with musical tube sound.
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.
