ER-101 Indexed Quad Sequencer: Test Video from Orthogonal Devices on Vimeo.
via Orthogonal Devices (additional videos below) [note this is the first Orthogonal Devices post]

- 4-track sequencer
- stepped and smooth voltage transitions
- each track has 3 outputs: 2 CVs + 1 gate
- each track contains up to 100 patterns and each pattern can contain up to 100 steps
- steps can be 0-99 clock cycles in duration
- gates can be 0-99 clock cycles in duration
- CVs are chosen (indexed) from voltage tables of which there are 2 per track (A & B)
- built-in voltage tables: 12-tone equal tempered, 22 shrutis, linear 0-8V, exponential 0-8V, linear-exponential 0-8V and others
- voltage tables are user-editable and have 100 entries per table
- voltages between 0.000-8.192V at 2mV increments can be dialed in
- each track has its own adjustable loop points
- smoothing can be enabled for individual steps, entire patterns and/or entire tracks
- smoothed transitions are NOT simply slews but are adjusted to match the current tempo in real-time
- hold feature (complete double-buffering of device state) allows smooth musical edit-commit-at-will while the sequencer is running
- while in hold mode, committing changes to a running sequence can be either immediate or quantized to the beat
- reset can be either immediate or quantized to coincide to with the ending of the current track, pattern, or step
- stores up to 16 snapshots of the state of the entire device
- arbitrary insert/delete of patterns/steps with clipboard style copy/paste
- math button allows you to specify a mathematical operation to apply to a step, a pattern or a track.
- expansion port
- firmware upgradeable via USB
Specifications
Width: 26hp
Depth: 2cm from the back of the faceplate
Current Consumption: max 120mA from +12V or +15V
Digital Inputs: x2 (clock and reset, threshold=2.5V)
Digital Outputs: x4 (gates, LO=0V HI=9.9V)
Analog Outputs: x8 (CV-A and CV-B, 0-8.192V at 12-bit resolution or 4096 levels)
Latest Firmware Version: v1.08
Max Total # of Patterns: 400/snapshot
Max Total # of Steps: 2000/snapshot"
The Faltermeyer Switch from Orthogonal Devices on Vimeo.
"An extended session with the ER-101 Indexed Quad Sequencer."
Modular Phase from Orthogonal Devices on Vimeo.
"A rendition of Steve Reich's Piano Phase (1967) using the ER-101 Indexed Quad Sequencer and some other eurorack modules."
How far can I get in 10 minutes? from Orthogonal Devices on Vimeo.
"The gloves have come off for an intimate session with the ER-101! I have my modular pre-patched with 3 voices each allocated to tracks 1, 2, and 4 of an empty ER-101 sequencer. So, how far can I get in 10 minutes? Actually, as it turns out, not very far but it was fun.
Everything you hear is sequenced by the ER-101 but if it just looks like a lot of random knob twiddling and button pressing (which to many of you I expect it will) then I invite you to have a quick scan of the ER-101 manual:
http://www.orthogonaldevices.com/files/er-101-user-manual-f1.07.pdf?attredirects=0&d=1
Patch details:
For all ER-101 tracks, CV-A controls pitch, CV-B controls loudness and GATE triggers an envelope generator. Track 1 is controlling a high register square-wave of the VCO-2RM, Track 2 is controlling a medium register square-wave of the VCO-2RM and Track 4 is controlling a self-oscillating MMF-1 in the lowest register. Envelopes are being generated by ADSR-VC2 and amplitude shaping is provided by uVCAs. The ER-101 voltage tables are in their default setting of 12ET (i.e. 12-tone equal-tempered). I really forced myself to keep the patch super simple so that it is clear what is affecting what.
Modular outputs to MOTU 828mk3 and recorded in Ableton with a light touch of reverb from ValhallaVintageVerb. No edits but I'm sure you can tell without me telling you."
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