Mixup is a versatile, expandable audio mixer for eurorack format. It has eight inputs (6 on the front panel) and two outputs. Inputs 1 and 2 are single-channel mono inputs, each with its own mute switch and level control; Input 3 is a dual-channel stereo input with a shared mute and level control; and input 4 is an auxiliary unity-gain, non-mutable stereo input.
Using bus connectors on the back panel, you can chain multiple Mixups together in series, giving you the ability to mix together even more inputs, or to create sub-mixes for routing around larger systems.
Because Mixup is designed specifically for audio (and not for CV mixing), it uses AC-coupled circuitry (which reduces the potential for ‘pops’ when muting and unmuting audio), and it uses audio-grade, logarithmic attenuators for a smooth, even response across the entire volume range.
The Blue Lantern Steiner 10 Stage VCF re-release marks the return of one of their earliest modules. Like its predecessor, the module was inspired by the Steiner Synthacon filter. It is a completely analog filter that utilizes a 10-stage diode core and dedicated low-pass, band-pass, and high-pass inputs. Each out the inputs can be used simultaneously for mixing different VCO signals.
Unlike its predecessor, the Steiner 10 Stage VCF re-release features JFET power coupling, precision trimmers on the cutoff and resonance, and DC cutoff on the resonance circuit. Additionally, the module’s trimpot allows for precise resonance adjustment, extending from smooth to screeching at the turn of a knob.
DynaMix is a fast two-channel Low Pass Gate, dynamics manager and mixer, the core of which is derived from our 0-COAST synthesizer. The LEVEL parameter provides simultaneous voltage control over the Amplitude and Frequency content of audio signals, operating as a VCF/A. The DYNMC parameter allows for using audio as a control voltage. It accepts audio signals and converts them into a signal that may increase or decrease the LEVEL parameter thus allowing for side-chaining and ducking. The summing section is complete with an AUXiliary INput allowing for the chaining of multiple MIX units (modDemix, Optomix and RxMx modules) to create large, non-centralized mixes.
Quad Voltage Controlled Amplifier and Cascaded Mixer
Oh My Quad…
When you get into eurorack, you’ll inevitably come across the old addage—you can never have enough VCAs. It’s true, but it’s a bit over simplified, the Quad VCA is not. Each of the four VCAs has independant level control, bipolar CV inputs with attenuators and led indicators, adjustable linear/exponential response and and a +6dB boost switch to double the channels output. Each channel’s CV inputs are cascaded to the next, as are its outputs so that you can create submixes.
The LxD, Low Strike Duo, is a dual-response, two channel, direct-coupled, Low Pass Gate, which utilizes vactrols in order to provide simultaneous control over the Amplitude and Frequency Spectrum of an INput Signal. It is, in essence, a VCFA (Voltage Controlled Filter Amplifier). Unlike the Optomix, the LxD offers two different filter responses. CH. 1 offers a 12db/Octave response that is mildly-resonant, while CH. 2 offers a 6bd/Octave that is non-resonant. The OUTput of CH. 1 is normalled to the INput of CH. 2. This normalization puts the two channels in series, which is similar to the VCF into VCA arrangement made popular by many monosynths of the 1970s.