Description

RR Janko® Keyboard – Classic Version

Based on Midiplus X Series III (X4 III / X6 III / X8 III) | Modified with RR Janko® Classic Keys

This product is based on an original keyboard of the Midiplus X Series III, professionally modified by Reinert-Piano with RR Janko® Classic Keys. Reinert-Piano is an independent manufacturer. There is no affiliation with or authorization from the original brand.

Equipped with 3D-printed RR Janko® Keys in a 4-row arrangement inspired by the original Janko layout.

Clearly structured and well-defined playing surface
Identical fingering patterns in all keys
Logical and consistent note arrangement
Ergonomic and relaxed playing position
Reduced learning curve

The Classic version offers a highly defined tactile feel and maximum orientation across the keyboard.

Material & Construction

High-quality 3D-printed components
Precisely fitted and mounted
Durable and lightweight construction
Each unit individually inspected

Base Unit – Midiplus X Series III

All models feature identical functionality:

4 assignable rotary knobs
6 assignable buttons (transport functions or MIDI CC)
1 clickable multifunction encoder
Pitch and modulation touch strips
Octave and transpose switches
Smart Scale mode (16 scales)

Connections

Sustain pedal input (6.3 mm jack)
Expression pedal input (6.3 mm jack)
MIDI OUT (5-pin DIN)
USB Type-B (class compliant)

Power Supply

USB bus-powered

Housing

Robust metal construction

Model Variants Overview

The difference lies solely in key range, size, and weight:

X4 III – compact & mobile

Dimensions: 782 × 193 × 87 mm
Weight: 3.5 kg
49 keys

Ideal for mobile setups and space-saving environments.

X6 III – extended range

Dimensions: 947 × 193 × 87 mm
Weight: 4.0 kg
61 keys

More keys for expanded musical expression.

X8 III – maximum range

Dimensions: 1325 × 193 × 87 mm
Weight: 5.6 kg
88 keys

Full playing range for advanced performance and studio work.

Important Notice

Not manufactured by Midiplus in this form
Modified original device
Distributed under the RR Janko® brand

All trademarks remain the property of their respective owners.

The Result – RR Janko® – Keys reimagined

A proven MIDI controller – reimagined for a more intuitive and structured playing system.

Production & Shipping

Each instrument is made to order after payment is received.
Production time is approximately 15–20 business days. Shipping takes place after completion.

Shipping Cost Notice

The shipping costs shown at checkout are preliminary. For large or high-value items such as RR Janko® Keyboards, the final shipping costs depend on the destination country, package dimensions, weight, insured value and the current rates of the selected carrier.

After your order has been placed, we will calculate the actual shipping costs based on the currently valid shipping rates. Any shipping amount already paid will be credited toward the final shipping cost.

If there is a difference, we will contact you before dispatch. If the final shipping cost is lower, the difference will be refunded or credited. Import duties, taxes and customs clearance fees are not included and are the responsibility of the buyer.