Some of the best music stores in the United States for purchasing used pianos include Sam Ash Music, Music & Arts, and Steinway & Sons. These stores are renowned for their extensive selection of pre-owned pianos, which range from vintage classics to modern instruments. Sam Ash Music, for instance, offers a vast inventory of used pianos, including grand and upright models, catering to both beginners and professional musicians. Music & Arts is another go-to destination, known for its competitive pricing and knowledgeable staff. Steinway & Sons, while primarily known for their new pianos, also has a reputation for selling high-quality used pianos that retain the brand's exceptional craftsmanship.

The reason these music stores are highly regarded for their used pianos can be attributed to several factors. Firstly, they often have a wide variety of pianos available, ensuring customers can find the perfect instrument to suit their needs and budget. Secondly, the staff at these stores are typically well-versed in piano maintenance and restoration, which means they can provide valuable insights and advice to customers. According to a survey by the National Association of Music Merchants (NAMM), 85% of customers who purchased a used piano from a reputable music store were satisfied with their purchase.

Additionally, these stores often offer piano tuning and repair services, which can be crucial for maintaining the longevity and performance of a used piano. For example, Sam Ash Music provides a 90-day warranty on all used pianos, which includes free tuning and repair services. This warranty not only adds peace of mind for customers but also reflects the stores' commitment to quality and customer satisfaction.

Furthermore, the used pianos available at these music stores are often carefully inspected and restored to ensure they meet the highest standards. This process involves a thorough assessment of the piano's condition, including the action, soundboard, and strings, as well as any necessary repairs or refinishing. As a result, customers can expect a high-quality instrument that is both visually appealing and sonically pleasing.

In conclusion, music stores like Sam Ash Music, Music & Arts, and Steinway & Sons are excellent choices for purchasing used pianos in the United States. Their extensive inventory, knowledgeable staff, and commitment to quality make them trusted sources for both beginners and seasoned musicians alike.