Hi Don, In the early 70's here in Canada we sold many UST4's. Back in the those days Japanese pianos were 50% less than good quality North American products, however both Japanese companies had not mastered the dry climate manufacturing techniques that we see today. Steam heated institutions played heck with stability. Many were repinned. These units seemed to fair very well in home use, where the humidity is on average 30% in winter, vs institutional use at 10%. Brings back some fond memories of a by gone era. Regards Roger > >This series started (I believe) with the ST-3. I have never heard of a >UST-4, but the UST-5 was a widely respected workhourse studio. It was >changed to the UST-6 at some point, then on to the UST-7, which is still >being made and is still a very sturdy piano. > Roger Jolly Baldwin Yamaha Piano Centre Saskatoon and Regina Saskatchewan, Canada. 306-665-0213 Fax 652-0505
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