The Neutron Flux 8 Pole Variable Character Filter is a 12hp skiff friendly Eurorack filter module with a stereo analog core and digital control over it. The digital control allows the core to shaped almost endlessly, taking on the character of almost any classic filter, and gives the filter the ability to explore sounds that have never been heard before.
Two 4 pole filter cores: These can be run in stereo, mono divided to stereo or chained as a 8 pole mono filter for almost LPG-like steep slope.
Characters: The green factory character bank has five characters with vintage spirit:
Fat – Our take on a ladderish filter character, great for slightly overdriven bass sounds.
Crisp – A bright state variable filter. Has a notch setting in the center of the mode pot.
Liquid – Spacey resonance. Filter pings dripping with dew.
Sour – The squelchy acid thing. Chained pole settings have a sour filter first and a flat distortion after.
Mean – This is all about bad behavior with distortion. Highly unstable.
Coming later in a firmware update, the Neutron Flux will also have two user banks (yellow and red) for more specialized filter characters which can be replaced via audio update.
Overdrive: Long press on the pole switch enables the boost circuit. It is a +20dB before the filter core. Most of the audible distortion happens on the first filter stages which go from clean via warm saturation to hard distortion. In all cases the drive pot acts as a volume pot, while the overdrive function switches two different ranges.
The topology of the Neutron Flux allows toggling the boost separately for each core. For example some special characters could have the boost operating between the cores when they are chained in the 6 or 8 pole modes. See the Sour character for a use case like this.
Stereo: This control spreads the cutoff between L and R channels and induces VCO-like drift. This way a mono signal can be split into wide stereo. The stereo effect isn’t like a micro delay or chorus but something else. It’s more like an animated binaural mismatched eq-like effect. A sole static cutoff spread between left and right is a bit troublesome because the stereo image would be crooked. This is why we added some VCO-like drift in the stereo function. You can use it as set-and-forget way or apply it on top of an single envelope or LFO in the CV input. This way the modulator’s effect is applied a bit differently to each side.
Another special function in some characters is that the center point in the stereo pot is the zero spot. Move it to one side and the other moves in the other way the same amount. This way the filter can do some cool symmetric stereo phaser effects.
12hp / 25mm deep / 150mA +12V / 120mA -12V
Analog stereo filter with digital control.
4 pole stereo / 8 pole mono
Traditional filter ui with cutoff, bipolar FM, resonance, mode controls with CV.
Analog CV for FM and 1V/oct.
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Shipping methods
We use a combination of Parcelforce, DPD, Royal Mail and UPS for the UK, and for international orders it's either Royal Mail, UPS, DHL or FedEx depending on where you are in the world. If you have a particular preference then try to let us know BEFORE you order so we can look into it for you. Please note that there may occasionally be additional shipping charges if you live in a remote area, depending on what surcharges are applied by the shipper. We'll get in touch to discuss this with you in such cases.
Dispatch times
For UK orders, we normally dispatch the same working day if we get the order before 15:00. If you have a really urgent situation then of course drop us an email before ordering and we'll always do our absolute best to accommodate you.
For international orders, we normally dispatch the same day if we get the order before 13:00 but again, occasionally it might be the next day before we can send it out, and sometimes FedEx or UPS may come a little earlier than scheduled which would also push an order into the next day.
Shipping times
Since April 2020 the couriers we use have suspended guarantees for shipping times, so even though we're paying them for priority services - 24-48 hours for most of the world - in practice it's often an extra day on top and sometimes it can be longer.
There is absolutely nothing we can do about this unfortunately. If you are outside the UK and it's a life-or-death situation where you absolutely MUST have that passive mult for the next day then... it may be better to find a local supplier.
Saturday shipping
If you're in the UK and you order before 15:30 on a Friday then we can send something for a Saturday delivery (NB: this applies to UK mainland addresses only). The success rate with DPD is about 95% so it's worth a punt most of the time. Please note that if you select Saturday shipping on an order placed earlier in the week, we'll wait until Friday to ship it.
Pre-orders
If a product is listed as a pre-order, it means we've ordered it from the supplier but it's not physically in stock yet. The product listing will include an estimated shipping date based on the best information we have from the supplier, but do bear in mind this is subject to change and is not a guaranteed date.
If you place an order containing a mixture of in-stock and pre-order items, we'll normally hold off on shipping anything until the pre-order item(s) have arrived, rather than splitting it into multiple shipments. If you need the in-stock items sooner, we'd recommend placing separate orders. As always, please get in touch if you have questions.
Product Overview
The Neutron Flux 8 Pole Variable Character Filter is a 12hp skiff friendly Eurorack filter module with a stereo analog core and digital control over it. The digital control allows the core to shaped almost endlessly, taking on the character of almost any classic filter, and gives the filter the ability to explore sounds that have never been heard before.
Two 4 pole filter cores: These can be run in stereo, mono divided to stereo or chained as a 8 pole mono filter for almost LPG-like steep slope.
Characters: The green factory character bank has five characters with vintage spirit:
Fat – Our take on a ladderish filter character, great for slightly overdriven bass sounds.
Crisp – A bright state variable filter. Has a notch setting in the center of the mode pot.
Liquid – Spacey resonance. Filter pings dripping with dew.
Sour – The squelchy acid thing. Chained pole settings have a sour filter first and a flat distortion after.
Mean – This is all about bad behavior with distortion. Highly unstable.
Coming later in a firmware update, the Neutron Flux will also have two user banks (yellow and red) for more specialized filter characters which can be replaced via audio update.
Overdrive: Long press on the pole switch enables the boost circuit. It is a +20dB before the filter core. Most of the audible distortion happens on the first filter stages which go from clean via warm saturation to hard distortion. In all cases the drive pot acts as a volume pot, while the overdrive function switches two different ranges.
The topology of the Neutron Flux allows toggling the boost separately for each core. For example some special characters could have the boost operating between the cores when they are chained in the 6 or 8 pole modes. See the Sour character for a use case like this.
Stereo: This control spreads the cutoff between L and R channels and induces VCO-like drift. This way a mono signal can be split into wide stereo. The stereo effect isn’t like a micro delay or chorus but something else. It’s more like an animated binaural mismatched eq-like effect. A sole static cutoff spread between left and right is a bit troublesome because the stereo image would be crooked. This is why we added some VCO-like drift in the stereo function. You can use it as set-and-forget way or apply it on top of an single envelope or LFO in the CV input. This way the modulator’s effect is applied a bit differently to each side.
Another special function in some characters is that the center point in the stereo pot is the zero spot. Move it to one side and the other moves in the other way the same amount. This way the filter can do some cool symmetric stereo phaser effects.
Technical Specs
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