Mesa Boogie Mesa Boogie 12AT7 ECC81 Preamp Tube
The MESA® 12AT7 is a premium grade, lower gain preamp tube most often used in reverb stages and/or phase inverter positions in older amplifiers. It is used in older MESA/Boogie® designs (MESA amps built before 1991) as a reverb driver stage, but the 12AT7 can also be substituted in 12AX7 gain stages where users are seeking lower gain response from higher gain positions in the preamp string. The lower gain output of 12AT7s can expands the range of clip and overdrive potential of higher gain amps for truly authentic roots and traditional styles. This tube is equivalent to the European ECC81 tube and can be used in any 12AT7 or ECC81 type circuit. Stock In: Bass Strategy (later models) California Tweed , Mark I reissue (Reverb Driver), Subway WD-800, Triple Crown TC-50 & TC-100. Most often used as reverb drivers and/or phase inverters in older amplifiers. Used as reverb drivers in older MESA/Boogie's such as the Studio Preamp and some Mark Series amps.
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We ship most any order placed before 3pm CDT Tuesday through Friday the same day. Orders placed Saturday-Monday will ship the following Tuesday. For new products we will only ship to delivery addresses within the United States. Most pedals are shipped via Priority Mail. Guitars and Amplifiers are shipped via UPS Ground. Other shipping methods are available. Please contact prior to placing your order for shipping cost quotations to your delivery address.
The Guitar Sanctuary does accept returned items as long as arrangements are made for such within 48 hours of purchase/receipt. Returned items MUST be in the original condition and packing (including owner’s manual, un-used warranty card, any other items that came with the item) in order to qualify for a refund. No refunds are available for “special” ordered guitars or amplifiers (items that were not in stock, but rather ordered per the customers request. The customer is responsible for all freight charges and credit card processing fees incurred in the course of the sale. We cannot refund freight charges. The Guitar Sanctuary will charge a 20% restocking fee for returned effects pedals and amplifiers and a 10% restocking fee for Guitars. The only exceptions are for products that are defective. Please only purchase an item after you are certain it is right for you! Layaway: You can lay-a-way any product for a maximum of three months. Lay-a-way requires a 25% non-refundable deposit. We will not be able to ship the item until it is paid for in full and as a lay-a-way purchase, does not qualify for the 48 hour approval policy. International Sales: We can ship most guitars and other products internationally. We prefer money orders, cashier’s checks, or bank wire transfers in U.S. dollars. Shipping quotes are only valid for 48 hours. Please consult with your local officials about taxes, duties, currency exchange rates, etc.