{"product_id":"1-pair-based-on-sugden-a21-21w-pure-class-a-single-ended-audio-power-amplifier-board-pcb-dual-channel","title":"1 Pair Based on Sugden A21 21W Pure Class A Single-Ended Audio Power Amplifier Board PCB Dual Channel","description":"Product Details:\n\n\nBased on the famous Sugden A21 pure class A amplifier circuit.\n\n21W pure class A single-ended OTL power amplifier board\n\n1 PCB is one channel\n\nPower supply voltage: AC35V*1(mono 150W)\n\nOutput power: 21W\n\nQuiescent current: 800mA~1000mA\n\nDebugging method: Before power on, adjust the potentiometer clockwise to the end. After the power-on test sound is normal, turn it counterclockwise and adjust the voltage across the 1-ohm resistor to 800mV-1V.\n\nPCB size: 224*71MM\n\nNet weight: about 0.06KG (mono)\n\nPackage list:\n\n\n1 pair × Bare PCB","brand":"mickcara","offers":[{"title":"Default Title","offer_id":46440323121289,"sku":"NIMENJIAOWOZ","price":35.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0365\/2131\/2393\/files\/S6d50cf633a8644889b452550ef4078992.webp?v=1778050110","url":"https:\/\/mickcara.com\/products\/1-pair-based-on-sugden-a21-21w-pure-class-a-single-ended-audio-power-amplifier-board-pcb-dual-channel","provider":"mickcara","version":"1.0","type":"link"}