HELMAN UPRIGHT PIANO

Description & Features of the Helman Upright Piano
Brand & Origin
Helman pianos are produced by Toyo Piano Company in Japan. 
The craftsmanship involves traditional Japanese techniques and attention to detail. 
Model / Size
One common model is Helman 1A, which is an upright piano. Piano Hanoi
According to specs for the 1A Polished Ebony version, its dimensions are approximately 131 cm high, 154 cm wide, and 65 cm deep, and it weighs around 228 kg.
Finish / Appearance
Many Helman uprights come in a high-gloss black (Polished Ebony) finish. 
The finish is often polyester, giving a sleek, durable surface. Buy, sell 
Design is relatively classic and traditional, with an upright profile that fits well in smaller or more intimate spaces. 
Keyboard / Keys
Standard 88-key keyboard. 
Keytops: According to some sources, the keys are made from phenolic resin. Salem Piano
Action / Internal Mechanism
The internal “machine / action” is crafted carefully, with many wooden components. 
Uses a cast-iron frame to withstand string tension and ensure structural stability. 
Hammers: The hammers are covered in felt (in the 1A model) to provide a warm but clear tone. 
Soundboard: Probably made from quality spruce (common in good pianos) — at least, for the 1A model, the soundboard is described as “gỗ vân sam” (spruce wood) by some sellers. 
Pedals
There are 3 pedals: Soft (una corda), Sostenuto (or similar), and Damper (sustain). 
The design of the pedals and their mechanism is traditional, giving expressive control over dynamics and sustain. 
Tone / Sound Characteristics
Described as having a warm, rich, and resonant tone, suitable for both learning and more serious music playing. 
The piano reportedly has a “strong resonant base section” — meaning lower-register resonance is good. Buy, sell pianos on 
Because of the quality of its action and internal construction, it can support nuanced playing (soft to loud, delicate to bold).
Build Quality / Durability
Built with a solid frame and good materials, so it’s considered relatively durable. 
As many parts are wood, the internal mechanisms (action) are sensitive to temperature and humidity; proper climate control matters., when well maintained, a Helman upright can provide “generations of reliable service.”