Practically new Markbass Mini CMD 151P bass combo amp purchased 6 months ago, played out once, 15 inch driver, 500 watts, small footprint and weighs about 40 lbs. This amp is super portable, and can replace your halfstack. Includes original box and manual. This amp runs new at GC for $1199, asking $900 shipped.
http://www.music123.com/Markbass-Mini-CMD-151P-300-500W-1x15-Bass-Combo-Amp-481759-i1395926.Music123
http://www.music123.com/Markbass-Mini-CMD-151P-300-500W-1x15-Bass-Combo-Amp-481759-i1395926.Music123