NAMM, National Association of Music Merchants (NAMM), nke a na-akpọkarị NAMM na ngosipụta nke ụlọ ọrụ ngosi NAMM a ma ama, bụ nzukọ anaghị akwụ ụgwọ nke na-akwalite ihe ụtọ na uru nke ịme egwu ma na-ewusi ngwaahịa egwu ụwa ijeri $ 17 ijeri. ulo oru. Dịka ọkachamara nke na - emepụta ngwaahịa ọdịyo, Listener Pro bụ otu onye so na NAMM.