{"product_id":"mesa-boogie-mark-i-reissue-1x12-combo-amp","title":"1981 Mesa\/Boogie Mark II B 60w 1x12 Combo Amp","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eCollector owned for decades, just traded in. Classic Vintage Boogie tones!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eNo graphic EQ on this model, but footswitch is included !\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003eAs per Premier Guitar Mag: \"After building approximately 3000 of the Mark I models, Mesa introduced the Mark II in 1978. It had footswitchable channels and an optional 5-band graphic EQ. In 1980, Mesa introduced the Mark IIB, which had an effects loop, an expanded control panel that included Lead Drive and Lead Master controls, and their famous optional Simul-Class system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eMany players love the clean channel on the Mark II and Mark IIB because of how it breaks up slightly when turned up.\"\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003eHere is a list of controls and features and sample settings to help you gain familiarity with your\u003cbr\u003enew amplifier. You are encouraged to experiment every way possible with speakers, controls\u003cbr\u003eand external effects; your Boogie has been made virtually foolproof so damage in the event of\u003cbr\u003eaccident or misuse is quite unlikely. First, plug the AC cord into a wall socket and turn the Power\u003cbr\u003eswitch ON. It is not always necessary to have the three pin power plug grounded, and in some\u003cbr\u003esituations (such as multiple-amp setups) a ground float adaptor may reduce line buzz. The\u003cbr\u003eGround switch located on the amplifier rear panel should be set to the middle position and\u003cbr\u003eswitched to right or left only when buzzing line conditions warrant its use. With the amplifier on\u003cbr\u003eSTANDBY, plug the footswitch box into the lower front panel jack using the cord supplied,\u003cbr\u003ethough any cord will work. If the red LED indicator on the footswitch box does not light up, press\u003cbr\u003ethe footswitch, also check that all five pullout switches on the control knobs are fully pushed in.\u003cbr\u003eWhen the red LED is lit, the amplifier is in the Rhythm mode (Red=Rhythm). Set Volume 1 to\u003cbr\u003eabout 7 and Master 1 to about 2. These are the two gain controls used primarily for rhythm\u003cbr\u003eplaying. Generally you will want to run the Volume 1 control as high as possible without causing\u003cbr\u003eunwanted distortion, in order to have available the most possible sustain when switching into the\u003cbr\u003eLead mode. The Master 1 will control the playing loudness without changing the tone. The Bright\u003cbr\u003eswitch pullout on the Volume 1 control has less and less effect as the control is turned up higher\u003cbr\u003eand will have no noticeable effect from about 8 to 10. Set the Treble control to about 7. When the\u003cbr\u003eknob is pushed in, the tone control equalization is similar to that on old Fender™ amplifiers;\u003cbr\u003ewhen pulled out, the Treble control frequency center point is shifted downward to give a more\u003cbr\u003erobust sounding mid range. Treble Shift, when pulled, is automatically switched on in Lead\u003cbr\u003emode to give a hotter, fatter lead sound. Set the Bass and Middle controls to about 2 each. The\u003cbr\u003eMaster 1 control (already set to 2) also incorporates the Gain Boost pull switch which can be\u003cbr\u003eused for adding extra bottom to the amp's tone as well as a slight increase in gain.\u003cbr\u003eThe Lead Drive controls the amount of overdrive sustain and distortion; set it to about 8. The Pull\u003cbr\u003eLead switch built into this control performs the same function as the footswitch, namely triggering\u003cbr\u003ethe relay. You will see the LED indicator on the box go out when the Lead Drive knob is pulled.\u003cbr\u003eThe Lead Master controls the playing loudness in the Lead mode - set it to about 2. The Pull\u003cbr\u003eBright on this control only has effect on the Lead mode and not the Rhythm mode, and adds gain\u003cbr\u003eand sustain as well as brightness. So, to summarize briefly: Volume 1 and Master 1 regulate the\u003cbr\u003egain and the loudness of the Rhythm mode, Lead Drive and Lead Master regulate the overdrive\u003cbr\u003edistortion and loudness of the Lead mode where Volume 1 still provides the initial signal\u003cbr\u003estrength. Or, in other words, the amp uses two volume controls for Rhythm (Volume 1, Master 1)\u003cbr\u003eand three volume controls for Lead (Volume 1, Lead Drive and Lead Master). Please note,\u003cbr\u003ehowever, that the Master 1 is always active in the circuit and will limit the maximum volume of the\u003cbr\u003eLead mode when it is set too low. With only a little practice you should be able to work these\u003cbr\u003econtrols to provide just the right rhythm tone and just the right lead tone with the loudness of both\u003cbr\u003eindependently adjustable by the Master controls.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Vintage \u0026 Pre-Owned Amplifiers","offers":[{"title":"Default Title","offer_id":39990262333545,"sku":"ES0320","price":2495.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0042\/9431\/2054\/products\/IMG_1192.jpg?v=1660831447","url":"https:\/\/watchtowerguitars.com\/products\/mesa-boogie-mark-i-reissue-1x12-combo-amp","provider":"Watchtower Guitars","version":"1.0","type":"link"}