Orthogonal Devices ER-301

Orthogonal Devices ER-301 Sound Computer

Comes with original box + power ribbon + i2c cable + 64gb micro sd card loaded with latest firmware

Excellent condition. Everything works 100%. There are some light surface blemishes on the main screen only visible in certain lighting angles when the screen is off (see photos).

Free shipping in the US 48 contiguous. $50 shipped internationally.

Please let me know if you have any questions!

-

The ER-301 is a voltage-controllable canvas for digital signal processing algorithms. One of the many characteristics that attracted me to modular synthesizers is that they enabled me to make the kind of music that I love away from the computer. However, not all digital audio tools can be elegantly and efficiently realized in a dedicated hardware form. So, I either had to deny myself those tools, or, go to the computer.

Highlights

Live virtual patch creation without stopping the audio.

A core library of patchable units covering various functions from the simple (mixing, VCA, envelope generation, limiting, filtering, etc.) to the complex (loopers, granular synthesis, variable-rate sample playback, wavetable oscillator, etc.)

512MB of RAM, with about 480MB available for memory-resident samples. All memory-resident samples are converted to 32-bit (float) but keep their original sample rate.

Loads samples of any sample rate and bit depth (as long as they are WAV files).

Records up to 12 tracks of audio/CV to the SD card in the background.

Package Manager for easy sharing of patches, presets, custom units, and third party libraries.

There is a growing collection of user-developed units.

The firmware and SDK are open-sourced on GitHub. Users can develop their own units using the mid-level (Lua) SDK for maximum patching flexibility, or, using the low-level (C++) SDK for additional performance and custom graphics.

Specifications

Width: 30hp

Depth: 35mm from the back of the faceplate including the ribbon cable

Current Consumption: (+12V/-12V/+5V) 250mA/30mA/0mA

2 monochrome OLED displays where the smaller display shows additional context for the focused element in the main display.

The main knob is a high-quality optical encoder rated to over 1 million rotations.

4x audio (AC-coupled) outputs configurable to 48kHz or 96kHz at 24-bit.

4x audio (DC-coupled) inputs sampled up to 60kHz at 16-bit depth.

12x CV (DC-coupled) inputs sampled up to 60kHz at 16-bit depth.

4x gate (DC-coupled) inputs sampled up to 96kHz at 12-bit depth.