Superbooth 2025: TINRS x Error Instruments Kharper is a new multi-engine karplus strong electronic touch harp for Eurorack.
Although the Eurorack module market continues to grow with the addition of several companies each year, it remains a relatively small and familiar field in which these developers operate. Many developers are friends who help and collaborate on products.
This is also the case in the Netherlands, with This Is Not Rocket Science and Error Instruments, who have already developed several modules together. They showed their latest collab at Superbooth 2025. TINRS x Error Instruments have created the Kharper, a unique, fascinating touchy instrument for Eurorack.
TINRS x Error Instruments Kharper
Kharper is an electronic touch harp in an Eurorack module. It has four independent strings, each constructed from two touch strips with an LED bar in the middle.
At the core of the TINRS x Error Instrument Kharper is a digital engine, where each string consists of a voice. The developers use nine distinct karplus strong/physical modeling algorithms that are publicly available for the engine.
They are grouped in 3×3 sound engines (Pond/River/Ocean/…) that are each capable of producing four voices. They can be played and triggered with the touch strips.
Each string has a knob on top to set the tone and a dedicated CV/in below. Alternatively, you can patch a gate into it to pluck the string.
Tone and decay parameters let you adjust the sound character of the engines on the fly manually and via CV. So, you can animate the parameter with modulators from your modular system. You can achieve a wide range of sounds. Expressive playing is also possible.
You can touch and slde up down the strings/touch strips of the TINRS x Error Instruments Kharper with which you can achieve different sounds. This allows you to use the Kharper as a percussive but also a cinematic drone instrument where you have full control over each individual voice.
On the connectivity side there is also a CV/gate out with which you can control other instruments with the touch strips. Plus, there is a MIDI input and a strum gate in that will strum all four strings at the same time.
First Impression
I have to admit, I somewhat forgotten to cover the Kharper at Superbooth, even though I met Stijn and Priscilla from TINRS every day. Strange indeed. But I’m very happy that I saw Paul Tas at the DIY event on Sunday, who showed me the Kharper.
It instantly amazed me, because the thing is very expressive and lovely to play. Plus, sonically it’s a wild from dreamy, farytale plucky sounds to massive feedback drones. It’s definitely one of my favorites of this years Superbooth.
TINRS x Error Instruments Kharper will be available around June 18, 2025, for a price of 350€. You can pre-order it now with a 50€ deposit, and the remaining balance will be due around June 16, 2025.
More information here: Error Instruments
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