Wednesday, June 2, 2021

IWISTAO Tube Amplifier Mono-block Integrated West Electric Master 2x8W Vacuum Tube 6F3 Drive 300B 5Z2P Rectifier

IWISTAO Tube Amplifier Mono-block Integrated West Electric Master 2x8W Vacuum Tube 6F3 Drive 300B 5Z2P Rectifier



It is a dream vacuum tube 300B power amplifier with mature circuit design and handmade. Adopting a special high-performance output transformers, will give you a true 300B tone, slender high frequencies (rich triangle iron harmonics), full mid-range maturity, deep dive at low frequencies, and full tension (the tightness of the drum leather can be felt, and low-frequency dark surge) The ranking of the musicians, expression of the singer, and gesture of playing are fully displayed in front of our eyes. This unit also has a secret weapon, put on the tube cover, the sound is arrogant and dynamic, low-frequency control is excellent, bare tube sound is like lingering and soft, the drizzle in the autumn wind.



This unit is driven by an antique famous tube 6F3 (6BM8) composite tube, and its sound is delicate (0.8MA, U: 55 small signal amplifier triode; if 6SN7, requires 3-4ma,U: 13-15), and its dynamic range is large (-11v, u: 10 driver level; if 6sn7, -6v, u: 13), strong driving force (110vpp) is enough to drive the tube 300B (-70v), reduce distortion, and noble sound naturally comes to life!

At the same time, the high-performance packaged output transformer, adopts a complex process and a high-tech design with imports Red Bull Iron Core 86 * 45 from United Kingdom. Selected high-quality enameled wires, CNC drying, vacuum dipping, moisture-proof packaging, and refining Made.

Also it adopts reasonable wiring layout, purely build a shed, reduce the distributed capacitance, and make the high-frequency expansion wider. Reasonable foreign old-fashioned supplementary accessories, and after one year adjusting sound, it is recommended not to modify or upgrade other vacuum tubes. We pursue perfect sound,  this 300B tube amplifier is already tuned to a sound limit level after assembled above accessories , and it conveys the spirit of music and culture.

More details, please find here 🎵🎵🎵🎶🎶🎶

Thursday, May 27, 2021

IWISTAO FM LA3401 Single Decoding Board

 IWISTAO FM Single Decoding Board Mono to Stereo LA3401 Connect Intermediate Frequency Amplifier


The LA3401 is a multifunctional MPX demodulator IC designed for FM stereo electronic tuning. It features the VCO non-adjusting function that eliminates the need to adjust free-running frequency of VCO and the accessory functions such as FM/AM input, FM/AM input changeover, muting.


This LA3401 FM decoder board use audio advanced components, the effect is good. You can use it to decode the mono single from the tube intermediate frequency amplifier board to stereo one. 


This board kit is suitable for retrofitting radios, radio frequency plus stereo.




There are some photos for retrofitting an old Philips tube FM tuner below. After retrofitting, the sound is incredible, no distortion, no noise, perfect channel separation, a perfect high class Hifi tuner coming back.

Wednesday, May 26, 2021

DIY Transistor Power Amplifier PCBA Plus Preamp

DIY Transistor Power Amplifier PCBA Plus Preamp

This whole power amplifier and preamp is made of transistors, and its sound is more musical, mellow and rich from the man's voice...

Monday, May 24, 2021

Mono Transistor Power Amplifier

The video demo 2 channels HIFI Mono Transistor Power Amplifier + IWISTAO HIFI stereo 6.5 inch 2 ways speaker cabinets , the music source from HIFI CD player.


Thursday, May 20, 2021

IWISTAO Tube Amp Class A SE 6G2P Drive 6P6P Bamboo Casing + 4 Inch Full ...


IWISTAO Tube Amp Class A SE 6G2P Drive 6P6P Bamboo Casing + 4 Inch Full Range Bamboo Speaker Cabinet



Tube 6p6p (or 6v6) is specifically designed and developed power output tube for the audio field, sound performance had been proved since it hit market, whenever savored carefully, nostalgic thoughts immediately felt.

Make this power amplifier is based on the classic circuit of 6p6p (6v6) power tube, and we select HIFI components and parts to create this Class A single-ended tube amplifier, sound satisfactory by users, we would like to share it with all fans!

Also the 4 inch full range speaker cabinet is made of bamboo.

The music source of demo video came from desktop music player foobar2000, and the notebook is connected with a Bluetooth 4.2 receiver with vacuum tube 12au7 as a buffer.