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The SMD QR-1 Quick Release Heavy Duty speaker box terminal cup is a great solution to 2 common problems.  One being that most terminal cups are very wimpy! Not this one! Rather than a very thin injection-molded unit like most others use, ours has a...

THESE ITEMS ARE USED. THEY HAVE BEEN CHECKED/ TESTED BEFORE BEING PUT IN STOCK. You get the following.... -DD-1+ -Manual -Test Tone CD (Downloads available) -DD-1+ Harness   The purpose of this tool is to enable the installer to set the gain of...

SMD Ultra Six XL Fuse Block The SMD Ultra Six XL Fuse Block is our TOP OF THE LINE series when it comes to ANL Fuse Blocks! Starting with a thick 3/4" HDPE CNC milled baseplate, a giant slab of aluminum on each end with double...

OUR TOP OF THE LINE GAIN SETTING TOOL.  DOES EVERYTHING A DD-1 DOES AND MORE, INCLUDING BEING ABLE TO RECHECK THE GAIN OVERLAP OF A SYSTEM AT ANY TIME. (LIKE WHEN CUSTOMER RETURNS) The purpose of this tool is to enable the installer to set the gain...

SMD XL2 Distribution bar / 16 Slot ANL Fuse Block Protect your vehicle from the dreaded "Car-B-Q" with this product. Whether you have a demanding aftermarket sound system or other aftermarket/auxiliary accessories such as lighting, winches, air pumps...

SMD Ultra QCXL-4 Fuse/ Distribution Block (Ultra Quad Combo) The SMD Ultra QCXL-4 Fuse/ Distribution Block (Ultra Quad Combo) is our TOP OF THE LINE series when it comes to ANL Fuse Blocks! Starting with a thick 3/4" HDPE CNC milled...