With its mahogany long-body design and comfortable soft V-shaped neck, the Gretsch G9200 Boxcar Round-Neck 6-String Guitar plays like a million bucks. The vital feature of this guitar is the Gretsch Ampli-Sonic diaphragm (resonator cone), which is hand-spun in Eastern Europe from nearly 99 percent pure aluminum, yielding an impressive quality and volume of tone.