I am a guitarist but I wanted a piano (my second instrument) to improve my musicianship (establishing relative pitch/perfect pitch).
Originally I was going to buy a Yamaha NP30 @ £230 but I wanted something with a bit more realistic hammer action. After a lot of thought I decided to pluck up the extra money and buy a Roland (i think it was a F-110) for @ £800/£900. However at the shop in Newcastle upon Tyne (J. G. Windows) was a HPi_6s and the rather attractive digiScore . This was priced in the sale at £1600.
Thinking about the possibility of getting my kids involved in music I decided (with the financial help of a family member) to go for the HPi_6s.
When it arrived I thought I'd bought a fine quality musical instrument. That night I switched it on and could distinctly hear a 'hum' sound coming form it. The 'hummming' sound did not go away. My heart sank, oh my god, I thought, this thing shouldn't do that...it's 'Roland' not Bontempi. I emailed the shop.
They sent a technician to look it over. His findings went back to the shop. I phoned the shop and they had also spoken to Roland about the 'hum' sound. They said there is nothing wrong with the instrument, the humming sound is not a fault, is within the parameters of their quality control and they have sold hundreds of them and no one's complained. They went on to say that J.G. Windows are a reputable company and they did not want to see me dissatisfied, would I like to come into the store and try the HPi_6f.
At the store I was surprised, the Roland HPi_6f also makes a low frequency 'hum' sound when I turned it on (this was also heard by the salesman Paul, too) however it was not apparent on the HP305 or the HPi_7f. What's going on?
I tried Casios, Yamahas, Kawais and non of them 'hummed'. I even tried other Rolands non of them 'hummed' apart from the HPi_6 ???
I remember when the technician opened my HPi_6s up to examine where the 'hum' came from, we saw that the transformer was just open; nothing encasing it or soundproofing it. I find it hard to believe that Roland, who pride themselves on their 'attention to detail' could make such a fundamental gaffe with one of their pianos especially seeing as they must have already sorted this problem out on their other models.
I do not want to keep the piano that 'humms'. J.G.Windows are hopefully going to get me an ex-demo HPi_7 which (as I listened to already) does not 'hum'(this will still cost me an extra £1000.