When Roland developed the System 100M they created a rather nice Dual VCA module (130). This is a fantastic module but the signal path is AC coupled, which means the VCA cannot be used for adjusting the level of CV signals. Although Roland added more modules over time, including a DC Mixer, they never produced […]
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The AM8113 is a completely new complex VCO design for the 100M eco-system and is inspired by the discontinued Instruo Troika. An ultra stable VCO delivers four waveforms that can be mixed and blended to create complex wave shapes, by using two wave shapers to create new sounds! Description The VCO is based on the […]
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The AM8171 module has four separate channels of signal gates based on a modern analog switch. Each gate can be switched on and off by the CV gate inputs or by putting the mode switch into its upper position (preview). Green low current LED’s indicate when the gate is on. When Roland developed […]
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Overview The Roland 131 was a four channel audio mixer and output stage that was launched in 1979, along with the core Roland 100M VCO, VCF and VCA modules. It was not part of the base “D Set” system of 5 modules, but Roland sold around 1000 units over the next 3 years. It was […]
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This 16HP Eurorack module re-imagines the Roland 100M module of 1978. It combines the 24dB OTA filter from the Jupiter 8 with the VCA from the 130, which has linear and exponential modes. The filter has Q compensation, 12 and 24dB modes and a resonance that goes to the edge of self-oscillation. Overview The AM8120 […]
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A 16HP Eurorack module which reimagines the Roland prototype of 1978, with a couple of twists. The VCO and sub from the SH-101, combined with the cascaded ladder filter from the Korg Monopoly. This module produces new sounds, completely different to the standard Roland OTA filter. Both VCO and VCF chips are manufactured by Coolaudio. […]
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The Roland 132 was a dual four channel CV mixer that was launched in 1979 along with the core Roland 100M VCO, VCF and VCA modules. It was not part of the base “D Set” system of 5 modules, but Roland sold around 2000 units over the next 3 years. It was particular useful in […]
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The AM8176 module has three vactrol filters which can be independently adjusted for frequency, resonance and modulation depth. The modulation inputs are usually driven by one or more LFO’s to create band pass sweeps. Description Rotary potentiometers (with TR808 style knobs) at the top of the front panel are used to adjust the level of […]
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This module is a replica of the Roland 100M 141 which appeared in 1978 as an initial prototype. It never made it into production and the Gate Delay reappeared in the later 1983 172 module. The Roland 141 came to light in late 2022 thanks to Alex Ball buying one! He has taken photos of […]
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