{"product_id":"jcm-800-pre-amp-1","title":"JCM 800 Pre Amp - Preamp","description":"\u003ch3\u003eProject overview\u003c\/h3\u003e\n\u003cp\u003eThe JCM 800 pre-amp emulates the tone of the classic Marshall’s JCM 800, using the same circuit schematic that you will find in the most famous British Amps from the ’80s, using JFET transistors instead of vacuum tubes. Try this board and put the intense tone of their JCM 800 amplifier into your\u003c\/p\u003e\n\u003cp\u003epedalboard. This is a wide-ranging, British-flavored overdrive that can be pushed well into the high-gain territory.\u003c\/p\u003e\n\u003ch3\u003eIntroduction\u003c\/h3\u003e\n\u003cp\u003eThis circuit has been developed to recreate all the gain and tone from the famous Marshall’s JCM 800 Pre-amps, replacing the vacuum tubes for the JFET J201. This design’s origin goes back to 2004 by a schematic published by Electric, following the same conversion style as the ROG designs as the Azabache, Britania, Thunderbird, etc.\u003c\/p\u003e\n\u003cp\u003eThis version includes five trimmers to bias the JFET according to your taste. It also features pads to use standard through-hole J201 or the more available and reliable SMD version.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePowered by six J201.\u003c\/li\u003e\n\u003cli\u003eFive Internal Trimpot to regulate bias of the transistors.\u003c\/li\u003e\n\u003cli\u003eDesigned to use onboard potentiometers. Keep it tidy without using cables!\u003c\/li\u003e\n\u003cli\u003eThe compact format fits perfectly in a 125B enclosure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eControls\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBass: Tonefor the bass frequencies.\u003c\/li\u003e\n\u003cli\u003eMids: Tone for the mids frequencies.\u003c\/li\u003e\n\u003cli\u003eTreble: Tone for the treble frequencies\u003c\/li\u003e\n\u003cli\u003eMaster: Controls the output gain of the preamp.\u003c\/li\u003e\n\u003cli\u003eLevel: Controls the output volume\u003c\/li\u003e\n\u003cli\u003eGain: Controls the preamp gain\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhat's in the bag.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePCB\u003c\/li\u003e\n\u003cli\u003e3PDT\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PCB Guitar Mania","offers":[{"title":"Default Title","offer_id":42789431410776,"sku":"PCBMUSAJCMPA","price":1800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0558\/4886\/1784\/files\/JCM-800_e037cfef-115b-4977-af2f-54424edf768f.webp?v=1776189948","url":"https:\/\/00bdaa.myshopify.com\/es\/products\/jcm-800-pre-amp-1","provider":"Heavy Metal FX","version":"1.0","type":"link"}