Gretsch G9200 Boxcar Round-Neck Mahogany BodyWith its mahogany "long body" design and comfortable "soft V" shaped neck, this faithful reissue of the 1930s classic sounds and plays like a million bucks. The vital feature of all Gretsch resonator guitars 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.