Instruo Arbhar (2019)
A Eurorack granular processor with integrated microphone and reverb, released in 2019.
Overview
The Instruo Arbhar is a Eurorack-format granular audio processor introduced in 2019, available for preorder as of November 18 that year. It functions as a granular SoundSource with onboard processing, featuring a built-in microphone, line-level input with compression, filtering, and saturation, and stereo reverb. The module uses the Lexer method of granular synthesis and supports mono input on the original version, with firmware optimized for 48kHz, 24-bit audio. A later update, referred to as Arbhar 2.0, evolved into a stereo granular module and included updated firmware and expanded capabilities.
Specifications
| Product type | granular processor |
| Format | Eurorack Module |
| Width | 18 HP |
| Depth | 39 mm |
| Current draw +12V | 210 mA (original), 230 mA (2.0) |
| Current draw -12V | 30 mA |
| Sample rate | 48 kHz |
| Bit depth | 24-bit |
| Buffer length | 10 seconds, mono |
| Firmware version | 2.0 |
Design
The Arbhar features an integrated microphone described as "superb," with an input circuit that adds compression, filtering, and saturation. It includes a "stellar reverb" engine and supports CV control via a bipolar Intensity CV input. The module implements the Lexer method of granular synthesis and includes a CV expander option (2 HP). Firmware version 2.0 is optimized for 48kHz, 24-bit audio, and documentation includes a quick guide, written manual, and extended videos.
Context
The launch of the Instruo Arbhar in 2019 was described as heralding a new generation of granular processing. The 2.0 version, announced in October 2023, evolved into a stereo granular module, marking a significant update to the original design.
Market
Used units have been purchased for €465, with asking prices ranging up to €519. One listing notes the unit as "no more than a year old" at €515.
eBay Listings
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