DIY Vacuum Tube Preamplifier with CAT SL-1 Diagram

DIY Vacuum Tube Preamplifier with CAT SL-1 Diagram

Vacuum tube used, 12AU7/1pc, 12AX7/2, 6dj8/1pc

The circuit is large dynamic, accurate in positioning, and mellow in the intermediate frequency. It can be called the most perfect design of the tube pre-amplifier.

More details, please find here,

IWISTAO Vacuum Tube Preamplifier Finished Board DIY kit 12AU7 12AX7 6DJ8 CAT SL-1 Circuit Diagram DIY HIFI Audio

IWISTAO 6.5 Inch Full Range Empty Speaker Cabinet with Labyrinth Structure High-density Fibreboard DIY

 IWISTAO 3-6.5 Inch Full Range Empty Speaker Cabinet with Labyrinth Structure High-density Fibreboard 

Speaker cabinet adopt double back guide pipe, and sound quality is relatively pure. Its panel can be replaced if you have spares. This speaker cabinet kits support 3—6.5 inches full range speaker.

There are two options, one is kits, if you like DIY and have strong practical ability to polish and assemble it, you may try it.

The others one is an assembled as the photos showed below, it is an example for 6.5 inch speaker unit.

More details, please find here,

IWISTAO 3-6.5 Inch Full Range Empty Speaker Cabinet Kits Labyrinth Structure High-density Fibreboard for Tube Amp

 

IWISTAO 2 Way 6.5 Inches Center Speaker Empty Cabinet 

This is a pair 2-way empty speaker cabinet that is made of 15mm thickness high-density fiber board with PVC wood grain leather on the outside, there are 3 options for wood grain leather.

 

Suitable for one 4-inch tweeter, one 2 pcs 6.5-inch midrange or bass unit.

 

More details, please find here

IWISTAO 2 Way 6.5 Inches Center Speaker Empty Cabinet 

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 🎵🎵🎵🎶🎶🎶

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

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.

 

 More details, please find here,

IWISTAO FM Single Decoding Board Mono to Stereo LA3401 Connect to IF Amplifier HIFI Audio DIY