(function(){
let w = window.innerWidth;
function setHeaderCssVar() {
const headerEle = document.getElementById('shoplaza-section-header');
if(!headerEle){ return };
document.body.style.setProperty('--window-height', `${window.innerHeight}px`);
document.body.style.setProperty('--header-height', `${headerEle.clientHeight}px`);
const mdScorllHideEle = headerEle.querySelector('.header__mobile .header__scroll_hide');
if (mdScorllHideEle) {
document.body.style.setProperty('--header-scroll-hide-height-md', `${mdScorllHideEle.clientHeight}px`);
}
const pcScorllHideEle = headerEle.querySelector('.header__desktop .header__scroll_hide');
if (pcScorllHideEle) {
document.body.style.setProperty('--header-scroll-hide-height-pc', `${pcScorllHideEle.clientHeight}px`);
}
}
function handlResize() {
if(w == window.innerWidth){return};
w = window.innerWidth;
setHeaderCssVar();
};
function init(){
setHeaderCssVar();
window.removeEventListener('resize', window._theme_header_listener)
window._theme_header_listener = handlResize;
window.addEventListener('resize', window._theme_header_listener);
}
init();
})();
${data.index + 1}/4
Description
Product Description
Power input voltage: 95-265V, Filament output: 6.3V, High voltage output:250V 280V The voltage can be adjusted: plus or minus 10%. (Adjust your favorite tone as needed.) It used for tube pre-amplifier, the effect is very good. Size:length 100mm * width 58mm *high 32mm.
Features: 1. The switching power supply has an all-aluminum alloy shell and a stainless steel shield, which shields various electromagnetic interference. 2. Comes with 5V Bluetooth decoder board power interface. 3.It comes with high-voltage delay synchronous rectification to reduce current impact.
Make the treble clear, the middle pitch round, and the bottom noise clean. Let the problem of the lack of bass of the original tube also be solved, making your machine's bass dive more powerful. Use it on the 6P1 small single-ended front board to get better results. Let your old machine get a new life.
The high voltage output of this switching power supply adopts synchronous rectification technology and delay function, which can delay about 30 seconds, and the length of time can be adjusted by itself to avoid the impact on the tube when the filament is not hot.
(Science popularization: In the past, a bile rectifier tube was used to rectify. After the filament is lit, electrons are slowly emitted. The high voltage is also slowly increased. The impact on the bile duct behind is very small, which can significantly extend the life of the tube. So this power supply is also designed for high voltage from 0V Slowly increase to 260V, instead of using other timing circuits, 30 seconds to suddenly apply the entire 260v high voltage to the tube, which can maximize the life of the tube)
