The Pearl River UP-121 is a 121 cm studio-class upright piano featuring a solid spruce soundboard, German Röslau strings, and Pearl River’s high-precision action for balanced tone and reliable performance.

The Pearl River UP-121 (also known as UP-121S) is a 121 cm professional upright piano built for stable tuning, long-term durability, and a warm, balanced sound. Designed by the world’s largest piano manufacturer, it offers high-quality materials normally found in more expensive instruments—solid spruce soundboard, Röslau (Germany) strings, and in-house engineered hammers and action.

With a traditional studio-upright height of 121 cm, the piano delivers strong bass, clear mids, and bright, singing treble suitable for home practice, music schools, studios, and small performance spaces. The UP-121 includes a soft-close fallboard, brass hardware, and comes in multiple polished finishes.

⭐ Technical Specifications 

General

• Model: Pearl River UP-121 / UP-121S

• Type: Upright Piano

• Height: 121 cm (47.6")

• Width: approx. 149–152 cm

• Depth: approx. 59–61 cm

• Weight: approx. 230–240 kg

• Finishes: Polished Ebony, Polished Mahogany, Polished Walnut, Polished White

Construction

• Soundboard: Solid spruce, tapered

• Ribs: Spruce ribs for better soundboard crown stability

• Backposts: Multi-laminated hardwood backposts

• Pinblock: Multi-ply laminated pinblock (beech/maple style) for superior tuning stability

• Frame: Cast iron plate

Strings & Action

• Strings: German Röslau premium piano wire

• Bass strings: Copper-wound

• Action: Pearl River in-house upright action

• Hammers: Pearl River hammers with imported felt (German/Japanese felt depending on batch)

• Keybed: Laminated hardwood keybed

• Keys: Spruce keys with acrylic keytops

Hardware

• Pedals: 3 pedals (Soft, Practice/Mute, Sustain)

• Fallboard: Slow-close safety fallboard

• Hardware: Gold-tone/brass hardware

⭐ About the Hammers

• Pearl River manufactures its own hammer cores (typically mahogany or similar hardwood).

• Felt is imported (commonly German or Japanese felt depending on production run).

• Factory voicing aims for a balanced, neutral tone suitable for classical, pop, and teaching environments.

• Hammers can be easily re-voiced by a technician for brighter or warmer tone depending on customer preference.

⭐ About the Strings

• The UP-121 is equipped with Röslau wire, the industry-standard German string wire used in many high-quality pianos.

• Bass strings are copper-wound, providing better bass power for the 121 cm cabinet.

• Röslau wire is known for:

  • Long-term tuning stability

  • Clear, projecting tone

  • Consistent quality in all registers

⭐ About the Action

• Pearl River’s upright action is designed for stable, even repetition.

• Touch weight is typically medium, suitable for students and teachers.

• The action benefits from after-delivery regulation (recommended for all acoustic pianos).

• Known characteristics:

  • Smooth key travel

  • Reliable spring work

  • Good durability with regular maintenance

⭐ Sound & Tone Characteristics

• Bass: Solid and surprisingly deep for 121 cm

• Mids: Warm, rounded, balanced

• Treble: Clear and singing, not overly bright

• Overall: Neutral, versatile, suitable for practice, teaching, and beginner–intermediate performance

This model is often chosen by:

• Music schools

• Teaching studios

• Homes and apartments

• Churches and rehearsal rooms

⭐ Quality Notes / What to Tell Customers

• Pearl River is known for extremely consistent production quality.

• The solid spruce soundboard and Röslau strings give the piano better sustain and tone stability.

• Multi-ply pinblock and backposts significantly improve tuning stability.

• Excellent value for money—professional features without the premium price.

⭐ Care & Maintenance Notes 

• First tuning recommended 4–6 weeks after delivery.

• Tune at least twice per year.

• Humidity range: 45–60% ideal (use a humidifier/dehumidifier if needed).

• Recommend a technician regulation after settling (optional but improves feel).