IWISTAO Finished Tube FM Stereo Tuner Stainless Steel Chassis

WISTAO Finished Tube FM Stereo Tuner Stainless Steel Chassis Black Aluminum Panel HIFI Audio 110V/220V

This unit is a typical superheterodyne radio. It adopts a whole circuit board design that include high frequency receiving, intermediate frequency amplification, limiting, frequency discrimination, stereo decoding, preamplification, etc. The output is stereo signal. It can be connected with various types of tube power amplifiers, active speakers, stereo equalization amplifiers and other equipments.

The specific circuit configuration is as below, high frequency receiving adopts double triode 6N3 for high frequency amplification and mixer amplification, and double triode 6N1 for local oscillation. The IF amplification uses a two-stage pentode 6K4, two-stage limiting, and a pentode 6J4. Phase frequency discrimination, stereo decoding uses TA7343, the decoded audio signal is switched to the double triode 6N2, and then the signal output to preamplification with a 5 times gain.

It is made of stainless steel chassis with black, and the front panel with 8mm thick aluminum plate. On the front panel, there are dual level meters to display audio signal level, and the digital frequency meter display FM reception frequency. Electronic tube with a modern digital frequency meter that is complementing each other with nice, classical and elegant style, maybe the frequency display board of the wireless receiver is the designer's wisdom. The right corner of the unit has a knob to manually tune the radio. All tubes are exposed at the top plate for heat dissipation purpose, and equipped with cat eye indicator behind the front panel. The whole structure of the tuner is compact, components layout had been optimized to be more reasonable.

More details, please find here https://www.iwistao.com/products/iwistao-finished-tube-fm-stereo-tuner-stainless-steel-chassis-black-aluminum-panel-hifi-audio-110v?variant=18467306602611

IWISTAO 300B Output Transformer C Type Single-ended British Amorphous 8C Advanced Core Pr 3.5K

300B Output Transformer C Type Single-ended British Amorphous 8C Advanced Core Pr 3.5K Se 0-4-8 ohms

This 300B single-ended output transformer uses British amorphous high-grade C-type iron core that has a unique advantage, especially when he static operating point is 80ma or below , it can give full play to the advantages of the output transformer. After actual measurement and listening, the voice is very vivid, clear, low-frequency tension is very balanced in three bands, excellent permeability and atmosphere feeling

Using high-quality enameled wire, lamination process, CNC drying, vacuum impregnation, well-designed 8C structure, to design to a perfect coefficient.


It is a better choice to tube amplifier audiophiles. Also, there is a matched power transformer.

300B Output Transformer C Type Single-ended Amorphous 8C 3.5K Plus Power Transformer

Here is the 300B tube amplifier.

300B Single-ended Class A 2X8W Tube Amplifier British Amorphous 8C Advanced Core Output Transformer

 

IWISTAO Bluetooth Speaker Handmade Vintage Pure Solid Wood 2x15W AUX U Disk MP3 WAV FLAC

If you are tired the Bluetooth speaker by mass production and want to find a unique Bluetooth speaker with good sound quality, you can come here to check it out.

The cabinet is made of 13MM thick sandalwood board with high density and rigidity. The panel is made of 8MM thick oak board with sharp texture and good toughness. Its structure is embedded with 45° angled slot and has high stability. It achieves a 400-mesh surface treatment and is coated with wood wax oil to maintain its natural color, feel good and easy to care.

Handmade products are more or less awkward and cannot be compared to the products produced by assembly line. If you are a perfectionist, this speaker may not be suitable for you.