{"product_id":"marshall-1992-super-bass-back-1971-1760275","title":"Marshall 1992 Super Bass Back 1971","description":"\u003ci\u003eThe following specs were carefully collected and recorded by a skilled technician. For a more detailed description and questions regarding sound, feel, or cosmetic condition, please call to speak to one of our experts.\u003c\/i\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSummary\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eHead\/Combo\/Cabinet: \u003c\/b\u003eHeads\u003cbr\u003e\u003cbr\u003e\u003cb\u003eHead\/Combo\/Cabinet: \u003c\/b\u003eTube Amp\u003cbr\u003e\u003cbr\u003e\u003cb\u003eWattage Range: \u003c\/b\u003e100-199 Watts\u003cbr\u003e\u003cbr\u003e\u003cb\u003ePower Tubes: \u003c\/b\u003eEL34 \/ 6CA7 \/ KT77\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTube Details: \u003c\/b\u003e12AX7 (3), EL34 (4)\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAmp Condition: \u003c\/b\u003eThis amplifier is in good condition with wear consistent with age and use. The Covering is worn and torn, especially on the bottom front lip of the cabinet. The faceplates are scratched. The hardware has a present patina.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eModifications\/Repairs: \u003c\/b\u003eThe output transformer has been rewound and the power transformer has been replaced with a Mercury Magnetics transformer that creates the correct voltage and current levels for this year of the circuit. New filter caps and bias caps have been installed. The impedance selector has been replaced, and an IEC power connector has been installed. A master volume has been added in an existing speaker jack hole. This model was a USA import model with four speaker jacks, two have been removed. The polarity switch has been disconnected. One power tube socket has been replaced. Resistors have been replaced.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSerial #: \u003c\/b\u003eSB\/A12720\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAmp Details: \u003c\/b\u003eThe amplifier retains its original output transformer, choke, pots, and mustard coupling caps. The inspection tag is dated April 1st, 1971. The original power transformer is included.\u003cbr\u003e\u003cbr\u003e","brand":"Marshall","offers":[{"title":"Default Title","offer_id":40471313645703,"sku":"U4967578901","price":70873.0,"currency_code":"MXN","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0343\/4368\/2183\/files\/marshall-amps-guitar-cabinets-marshall-1992-super-bass-back-1971-u4967578901-30420681654407.jpg?v=1683230346","url":"https:\/\/www.chicagomusicexchange.mom\/en-mx\/products\/marshall-1992-super-bass-back-1971-1760275","provider":"Chicago Music Exchange","version":"1.0","type":"link"}