BASS AMP: Guitar Research GR-30B

Modified by current owner. Replaced weak original speaker with new 8” driver by Audio-Select: 40-watts, with polypropylene cone. Added foam rubber insulation to inside of cabinet. Result: overall wider frequency range, and a much-improved bass response. A worthy experiment! Sturdy and loud for its size. Weighs only 24 lbs. making it very portable. Kept exclusively indoors, home studio, smoke-free environment. (size 17” H x 15” W x 8” D)