IWISTAO Passive Preamplifier Kit Unbalanced to Balanced/RCA to XLR/Signa...

IWISTAO Passive Preamplifier Kit Unbalanced to Balanced/RCA to XLR/Signal Input Transformer

When you use your mobile phone or computer to listen to music, you will find that the sound is small, the details are small, and the dynamic is thin, their sound quality aren’t full and pleasant like as CD player, decoder. This is because the output value of mobile phone and computer is 0.2-0.5V audio voltage only, while the existing power amplifier is generally designed with an input voltage of 0.75-1.2V. This intermediate voltage difference requires a 2x amplification boost value. Now the 1:2 signal boosting transformer solves this disadvantage.



1:2 signal boosting transformer, balance transformer, and inverter transformer, that is a passive boosting transformer developed to compensate for low signal output of computers and mobile audio sources in the existing market. Make the ordinary sound source close to the effect of CD player signal one. And, if CD player connected the signal boosting transformer to power amplifier, its sound will be even more powerful. After the audio signal pass the boosting transformer and amplify, it will output a stable impedance, it will lead to its signal transmission is fidelity, and its sound field positioning is better!

More details, please find here 

https://www.iwistao.com/products/iwistao-passive-preamplifier-kits-no-assembled-unbalanced-to-balanced-balanced-to-unbalanced-rca-to-xlr-signal-transformer?variant=29180982820979

IWISTAO Tube FM Stereo Radio Power Amp 6P1 2x3.5W Whole Metal Chassis

IWISTAO Tube FM Stereo Radio Power Amp 6P1 2x3.5W Whole Metal Chassis 

About this tube FM radio, it used 6N3 as a high-level and mixing, 6C11 as the unit local oscillates, IF amplification as 6J4 together with 5pcs mid cycle inductance, 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 the classic 6N2 driving 6P1, the sound is sweet and mellow.

It is a tube FM radio built-in power amplifier inside, the power amplifier is single-ended class A and its output power is 2x3.5W. After get it, you only need connect with outdoor antenna, and HIFI speakers, then you can listen to it, recommend using a pair high sensitivity full range speakers.

More details, please visit the link or leave your comment.
https://www.iwistao.com/products/iwistao-tube-fm-stereo-radio-built-in-power-amplifier-6p1-whole-aluminum-chassis-high-sensitivity-110v?variant=18486629892211

IWISTAO 2 Ways 4.5 Inches Bamboo Empty Enclosure 7.2L Retro Style

The 4.5 inch is a very retro size, a little bigger than 4 inches and smaller than 5 inches. In the 1990s, there were more speakers to use the size speaker unit. The cabinet design of this 4.5-inch speaker is very reasonable, its depth is increased, bass is better, and it is more in line with modern style, so that retro classic speaker reproduces its spring. Do not believe that you can listen to the video, the bass is full and flexible. Due to using high-sensitivity condenser mic, the recording background noise may be more obvious, but the effect is closer to reality.

This 4.5-inch speaker enclosure made of bamboo is compatible with 4.5 inch Sony speakers, and it is recommended that install speaker units inside as the photos showed, and will get better effect. Why is it effect better? It is not just casual to say, the built-in speaker units and the cabinet panel form a horn cavity, which increases sound pressure of the direct sound wave, reduce the treble diffraction on the panel, and then sound field becomes accurate, resolution of midrange and tremble is improved, there is a classic example that J B L flagship series that uses horn design.

How to DIY your oak full range labyrinth speakers

How to DIY your oak full range labyrinth speakers

In order to get the desired effect for small diameter full-range speaker like as 2 to 4 inches, the limit of its low-frequency is a key. This speaker completely overthrew the concept of speaker-making, speaker adopted Labyrinth cabinet structure that will get well effect but the structure is more complex, limiting its development. Through we continuous the efforts, we make a revolutionary new speaker for the full range speaker.

Firstly, we accurately calculated quarter wavelength of the radiation frequency of sound, the get the length of the tube sound to ensure sound quality; Secondly, we use engraving machine to segment carving, remove all burrs. Thirdly, using a tube amplifier and transistor amplifier for repeated testing and audition, spend a lot of energy produced, in order to power matched.

Now, the 2 to 4 inches oak full range labyrinth speaker cabinet hit the market now. 

You just need to select your full range unit speaker unit and install them in the cabinet only, so easy!

And how to do it, please take a look as below.

If you have questions, please contact us or leave your comments, thanks!