The U3 is noted for its powerful sound, making it ideal for spacious rooms, but potentially overwhelming in smaller spaces.

Some users recommend starting with a hammer-weighted digital piano for beginners, noting it can serve well for practice without disturbing others.

The U3 has a bigger soundboard and longer strings than the U1, resulting in a fuller, louder sound.

The felted setting in models like the UX3 allows for enhanced bass production, even when the sound is muted.

Replacement of hammer return cords and polishing of the outer cabinet and all brass during refurbishment ensures both aesthetic appeal and functional integrity.

Owners equate the sound preference of a U3 to a grand piano, implying a significant tonal quality upgrade over the U1.

A completely refurbished piano can offer a "new piano in an older body," providing significant value over a slightly newer, but non-refurbished model.

Some suggest considering a refurbished U3 for a cost-effective alternative, as these can be cheaper than new models with comparable quality.

Owners suggest that $4,000 could purchase a decent used Yamaha U3 or even a used grand piano, making expensive repairs on a free U3 less appealing.

A piano technician advises using CA (cyanoacrylate) glue to tighten loose tuning pins, noting this technique has worked effectively for over a decade.

Replacing key bushings and felts during refurbishment extends future maintainability and regulation longevity, making it a preferred option over non-reconditioned pianos.

Piano technicians caution that replacing 20 loose tuning pins may indicate more underlying issues, suggesting a thorough inspection before committing to repairs.

Refurbished pianos are likened to having undergone a thorough check-up, similar to replacing a car's timing belt, reducing the likelihood of future repairs.

Refurbishment by a Yamaha specialist that includes hammer shaping, damper service, and mute rail replacement enhances playability and reliability in older U3 models.