On all Magica amps built since the third quarter of 2016, a mini two position switch has been placed near the back of the amp between the two tubes furthermost to the right.  The switch points down towards the bottom of the cabinet.  This may not be the most convenient location for the switch, but it is the shortest distance for the signal and does not create any unneeded noise.

When the switch is pushed toward the front panel, it is in "M" mode and when it is pushed toward the back of the amp, it is in "D" mode.  The difference is "D" favors lower mids and "M" favors upper mids.  This only effects the overdrive channel(s).

There might be a little pop when the amp is on and the toggle is switched, but is is safe to use when the amp is on so you can experience the difference for yourself.  

Caring for your RedPlate is simple.  There are really two kinds of owners:  those who want their amp to look new for as long as possible and those who prefer to let their amp show its use as it ages.  If you like the aged look, you can skip the first paragraph below.

To keep your RedPlate looking new for as long as you can, regular cleaning can help.  We recommend a soft microfiber cloth, Sprayway (or other ammonia free product) and WD40.  The Sprayway can be used to clean all parts of the amp from the panels to the covering, just remember to always put the product on the cloth and then apply to the amp.  If you have a tolex covered amp and want it to shine, put one part WD40 and two parts Sprayway on a microfiber cloth and wipe down all of the tolex areas.  Do not apply WD40 to the panels or chassis.  If you have a raw tweed covered amp, a quick vacuum using the brush attachment that comes with any household vacuum is your best bet.  If you spill or stain the tweed, you can try Sprayway or a lightly damp cloth to blot at the stain, but do not use WD40.  
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If you gig regularly or travel with your RedPlate on a consistent basis, we suggest checking the bias on your amp monthly.  Obviously, you will need to use your judgement based on your usage.  For an amp in a studio or home setting that is not moved frequently, checking bias quarterly should be enough. 

Should the tone of your amp begin to sound dull or have more unwanted noise than normal, it may be time to replace the tubes.  We do sell replacement tubes here at the shop, but there are plenty of online retailers who do as well.