{"title":"Filters","description":"\u003cp\u003eFew things are more recognizable, more essential, than the mighty filter - from voltage controlled filters, to passive filters and low pass gates, unique filters are a passion of ours.\u003c\/p\u003e","products":[{"product_id":"passive-dual-lpg-with-linked-two-pole-24702","title":"Omen LPG - 4hp - dual passive LPG with 2-pole resonant filters","description":"\u003cp\u003eThe Omen is a dual LPG with a bit more than you might be used to. Like you, I once was lost in the world of low pass gates, seeking something more, something bigger and somehow juicier. The inspiration came to me as I was reading a particularly heavy book on passive filters, and I realized it was possible to make far more interesting LPG designs than the standard we've become so accustomed to.\u003c\/p\u003e\n\u003cp\u003eIn a convergence of old-school LPG design and more modern components, the Omen boasts two -6dB resonant filters, custom built vactrols, built in CV attenuation and no less than three cutoff modes per filter. Filter 1 is soft and light, imparting a gentle, naturally gated touch of filtering on your sound, while Filter 2 is darker and more resonant, and can turn downright growly and distorted when left wide open.\u003c\/p\u003e\n\u003cp\u003eDesigned to give you as many creative options as possible, the Omen has the unique ability to function as either two discrete LPG, or as one 4-pole resonant LPG. When plugging a signal in to Input 1, and with no signal plugged into Input 2, the output will be present at both Output 1 and Output 2, with Output 2 producing the signal as it passes through both filters. Tweaking both filters independently will generate a wide array of soft and sometimes harsh tones, ranging from Buchla bongos to early synthesis brass and organ sounds. There is much to love here.\u003c\/p\u003e\n\u003cp\u003eCV is similarly handled, by plugging in only one CV source, it will act on both channels - this is useful for creating musically similar outputs as well as when using the dual filter operation. However, the dual filter mode greatly benefits from having two CV inputs: use an envelope in CV1 to act as a VCA, and an LFO in CV2 to create tremolo, for instance.\u003c\/p\u003e\n\u003cp\u003eUsing custom designed, hand built vactrols, care has been taken to mitigate the less desirable aspects of passive LPGs - in most modules, the user can expect zero bleed through on the LPG channels, and signal attenuation is minimal even with the 4-pole filter settings engaged. Of course, many of the natural features of vactrols remain, such as subtle memory effect when engaging the vactrol for long periods.\u003c\/p\u003e\n\u003cp\u003eDIY enthusiast? Rejoice! The Omen is now available as a fully loaded DIY kit - everything you need to build your very own Omen packed in one place, so you can easily build one in the comfort of your own home. It is not a difficult DIY project, an ambitious beginner or someone with experience from a few easy builds can tackle the Omen in an afternoon. The build is all through-hole aside from three SMD components, which are easily soldered by hand due to their large size. \u003c\/p\u003e\n\u003cp\u003eFinally, you receive maximum blinkenlights as LED's on the front panel simulate the action of the vactrols, so you'll always know what's going on under the hood. No collection of fancy LPG's is complete without the Omen.\u003c\/p\u003e\n","brand":"Herzlich Labs","offers":[{"title":"Default Title","offer_id":46687123210583,"sku":"","price":1699.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/9163\/9639\/files\/omen_lpg_e734b191-9b14-45f3-9dcd-5e29f804daf0.jpg?v=1774291739"},{"product_id":"passive-low-pass-filter-0hp-herzlich-00971","title":"Passive LPF - 0hp \/ 1U 5hp  - Utility low pass filter","description":"\u003ch4\u003eLow pass filtering for fun and profit\u003c\/h4\u003e\n\u003cp\u003eYou need filters. You need huge, voltage controlled filters with massive cutoff knobs for doing sick filter sweeps, with old styroflex caps and transistors made in long-departed Eastern Bloc countries, of course. But when that is taken care of, you really also need some filters for smaller tasks. Taming sounds and signals gently, not with a brick wall or iron fist.\u003c\/p\u003e\n\u003cp\u003eThe Passive LPF is simple: a single pole -3 dB low pass filter with high quality components ranging from 31 Hz to 16 kHz. Set and forget, and move on to more important tasks in your performance or recording.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAccepts both CV and audio signals\u003c\/li\u003e\n\u003cli\u003eHigh quality capacitors from \u003cem\u003eWera\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003ePassive design: no external power, no batteries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt won't beat your beloved active filters in a toe-to-toe fight - but it won't have to, once you discover the inherent utility of having extra filtering options on hand.\u003c\/p\u003e","brand":"Herzlich Labs","offers":[{"title":"Enclosed (0hp)","offer_id":50655227380055,"sku":"","price":379.0,"currency_code":"DKK","in_stock":true},{"title":"No enclosure (1U)","offer_id":50655227412823,"sku":"","price":299.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/9163\/9639\/files\/passive_lpf_0hp.jpg?v=1747043103"},{"product_id":"passive-high-pass-filter-0hp-herzlich-18131","title":"Passive HPF - 0hp \/ 1U 5hp  - Utility high pass filter","description":"\u003ch4\u003eCut the lows, keep the highs\u003c\/h4\u003e\n\u003cp\u003eYou need filters. You need huge, voltage controlled filters with massive cutoff knobs for doing sick filter sweeps, with old styroflex caps and transistors made in long-departed Eastern Bloc countries, of course. But when that is taken care of, you really also need some filters for smaller tasks. Taming sounds and signals gently, not with a brick wall or iron fist.\u003c\/p\u003e\n\u003cp\u003eThe Passive HPF is simple: a single pole -3 dB low pass filter with high quality components ranging from 31 Hz to 16 kHz. Set and forget, and move on to more important tasks in your performance or recording.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSimple HPF for cutting low frequencies\u003c\/li\u003e\n\u003cli\u003eHigh quality capacitors from \u003cem\u003eWera\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003ePassive design: no external power, no batteries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAn excellent companion for situations where you need to cut a bit of low frequency. For instance, cutting lows before sending a signal into your reverb can help the reverb sparkle without creating too much low rumble. It's a simple and elegant solution that keeps you patching, without taking up your precious active filters.\u003c\/p\u003e","brand":"Herzlich Labs","offers":[{"title":"Enclosed (0hp)","offer_id":50713414041943,"sku":"","price":379.0,"currency_code":"DKK","in_stock":true},{"title":"No enclosure (1U)","offer_id":50713414074711,"sku":"","price":299.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/9163\/9639\/files\/0hp_hpf.jpg?v=1747733982"},{"product_id":"passive-stereo-low-pass-filter-herzlich-02249","title":"Passive Stereo Low Pass Filter - 2hp - psLPF - Compact passive filter for utility, mixing, EQ and filtering duties","description":"\u003cp\u003eLet's talk about filters - not your usual, souped up, CV controlled stereo-enabled monstrosity, but just regular old filters for EQ'ing and smaller filtering duties. That's this, right here - but in stereo, with a wide range and with a highly useful slide pot.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDual 1-pole passive filter units\u003c\/li\u003e\n\u003cli\u003eInternal normalization allows use as mono 2-pole filter\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eApproximate frequency range (dependent on signal chain): 33 Hz to 33 kHz\u003c\/li\u003e\n\u003cli\u003eHigh quality components and analog design\u003c\/li\u003e\n\u003cli\u003ePassive design: no power required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhat's it useful for, you ask? Any task where you'd like to user a filter, but sacrificing an entire filter module might be overkill. Submixing and cutting out the highs of a signal, feedback, amplifying the lows in a bass drum, tone control - there are many reasons you would want a passive low pass filter. Two, even! Either one for your left and right input, or one for two different but linked mono inputs. Neat!\u003c\/p\u003e\n\u003cp\u003eThis filter is fully passive, only 2hp and skiff friendly with a very shallow installation depth. It's also particularly good looking in black and gold.\u003c\/p\u003e","brand":"Herzlich Labs","offers":[{"title":"Default Title","offer_id":46923605475671,"sku":"","price":469.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/9163\/9639\/products\/il_fullxfull.5097672224_fkcn_96a8dc65-fd27-4e31-8e52-90175ff73d7f.jpg?v=1708304854"},{"product_id":"passive-stereo-high-pass-filter-00791","title":"Passive Stereo High Pass Filter - 2hp - psHPF - Compact passive filter for utility, mixing, EQ and filtering duties","description":"\u003cp\u003eLet's talk about filters - not your usual, souped up, CV controlled stereo-enabled monstrosity, but just regular old filters for EQ'ing and smaller filtering duties. That's this, right here - but in stereo, with a wide range and with a highly useful slide pot.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDual 1-pole passive filter units\u003c\/li\u003e\n\u003cli\u003eInternal normalization allows use as mono 2-pole filter\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eApproximate frequency range (dependent on signal chain): 33 Hz to 33 kHz\u003c\/li\u003e\n\u003cli\u003eHigh quality components and analog design\u003c\/li\u003e\n\u003cli\u003ePassive design: no power required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhat's it useful for, you ask? Any task where you'd like to user a filter, but sacrificing an entire filter module might be overkill. For instance, running your sound through a high pass filter before passing it into a reverb, will cut down on the bottom end rumble and allow you to enhance the sparkle of the reverb. And here you get two! Either one for your left and right input, or one for two different but linked mono inputs. Neat!\u003c\/p\u003e\n\u003cp\u003eThis filter is fully passive, only 2hp and skiff friendly with a very shallow installation depth. It's also particularly good looking in black and gold.\u003c\/p\u003e","brand":"Herzlich Labs","offers":[{"title":"Default Title","offer_id":46923605541207,"sku":"","price":469.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/9163\/9639\/products\/il_fullxfull.5090374562_b4ah_9c60c483-9aa6-4e17-9528-f799fd9745c1.jpg?v=1708304867"},{"product_id":"dual-passive-lpg-herzlich-low-pass-gate-96188","title":"Passive LPG - 2hp - dual passive low pass gate","description":"\u003cp\u003e\u003cstrong\u003eNothing compares to the sound of a hand-built vactrol.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cem\u003ePassive LPG\u003c\/em\u003e is a synth classic with good reason - nothing compares to the sound of well-tuned vactrols, the internal component which uses a light source and light dependent generator to create organic, plucked attacks and gentle decays in conjunction with a low pass filter.\u003c\/p\u003e\n\u003cp\u003eVactrols have a long history in music technology, from shrink-tubing and incandescent bulbs in old guitar amps, which gradually evolved into increasingly modern solutions. In recent years, however, vactrols have become a scarcity, which led me to spend innumerable hours designing, testing and carefully crafting my own design.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwo independent LPG units with two different filter cutoffs\u003c\/li\u003e\n\u003cli\u003eHand-built vactrols provide immediate musical results with any source\u003c\/li\u003e\n\u003cli\u003eHigh grade component selection and all-analog architecture\u003c\/li\u003e\n\u003cli\u003eLow-profile passive design fits anywhere and draws no power\u003c\/li\u003e\n\u003cli\u003eCreate organic plucks and percussion with ease\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a time where we can increasingly simulate everything from the impulse response of guitar cabinets to human language conversations with a machine, there is something defiant about the low pass gate. Like plucking a guitar string, the LPG relies on physical interactions that are subject to all manner of variables, things we cannot fully control or predict, which gives each individual unit a character slightly of it's own.\u003c\/p\u003e","brand":"Herzlich Labs","offers":[{"title":"Default Title","offer_id":47673318441303,"sku":"","price":599.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/9163\/9639\/files\/passive_lpg.jpg?v=1773308000"},{"product_id":"hyoperoxia-hypoxia-passive-hpf-lpf-72153","title":"Hyperoxia + Hypoxia - 0hp \/ 1U 10hp - passive HPF, LPF and BPF","description":"\u003cp\u003e\u003cstrong\u003eHPF? LPF? BPF? 10hp? 0hp? Yes.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cem\u003eHyperoxia + Hypoxia\u003c\/em\u003e combines the two popular namesake filters into one unit, giving you access to two independent 1-pole filters (HPF and LPF) or one single 2-pole bandpass filter. \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwo independent passive filter units, HPF and LPF\u003c\/li\u003e\n\u003cli\u003eInternal normalization gives you immediate access to the BPF output\u003c\/li\u003e\n\u003cli\u003eInstall in your 1U rail, or use it externally as a 0hp module\u003c\/li\u003e\n\u003cli\u003eApproximate frequency range (dependent on signal chain): 33 Hz to 33 kHz\u003c\/li\u003e\n\u003cli\u003eHigh quality capacitors from \u003cem\u003eWera\u003c\/em\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePassive design: no power required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIncidentally, this was also the first module I designed in the hybrid 0hp \/ 1U format, based on previous 0hp designs. If you own one of the old 0hp designs it's probably going to be worth \u003cem\u003eat least \u003c\/em\u003e$10 on Reverb. But don't let that dissuade you, maybe one day I will discontinue this one and it will become valuable, too!\u003c\/p\u003e","brand":"Herzlich Labs","offers":[{"title":"1U w\/o enclosure","offer_id":47905968456023,"sku":"","price":499.0,"currency_code":"DKK","in_stock":true},{"title":"0hp w\/ enclosure","offer_id":47905968488791,"sku":"","price":579.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/9163\/9639\/files\/il_fullxfull.5917384555_r7p3.jpg?v=1711368281"},{"product_id":"chem-lpg-2hp-chemical-decay-low-pass-gate","title":"Chem LPG - 2hp - chemical decay low pass gate","description":"\u003cp\u003e\u003cstrong\u003eThe LPG that refuses to die.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cem\u003eChem LPG\u003c\/em\u003e is your beloved classic, passive low pass gate, but with one very particular change: the vactrol itself is phosphorescent. This stems from an idea I had after an expedition through the rainforest for four days and nights without sleep. My boots were full of brackish mud, and my machete was getting dull, when I happened upon a long abandoned box, there, in the middle of the mangrove.\u003c\/p\u003e\n\u003cp\u003eInside it, I found an enormous, forgotten delivery of 80s glow in the dark wall decorations. From nearby rocks, I fashioned a crude mortar and pestle, which I used to grind them all into powder, which I filled into my packs and canteens. Now, I have forged them into phosphorescent vactrols, with UV LEDs, that offer plucked attacks and very, very long delays.\u003c\/p\u003e\n\u003cp\u003eWhen you activate the vactrol with CV, not only does the LED open the vactrol: it also charges the phosphorescent element, causing it to glow, which in turns keep the vactrol open. The more intensely and frequently you apply CV, the longer it will glow, increasing your decay time.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwo independent LPG units with two different filter cutoffs\u003c\/li\u003e\n\u003cli\u003eHand-built vactrols using UV LEDs and phosphorescent materials\u003c\/li\u003e\n\u003cli\u003eHigh grade component selection and all-analog architecture\u003c\/li\u003e\n\u003cli\u003eLow-profile passive design fits anywhere and draws no power\u003c\/li\u003e\n\u003cli\u003eExperience the joy of hostile design: one mistake and the decay lasts forever\u003c\/li\u003e\n\u003cli\u003eComes in a darkened enclosure to keep ambient light out\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe eyeball frying UV lights and the sensitive shells are delivered to you safely in a dark enclosure. If you choose to install it, be vary that ambient light, or even LEDs inside your case, may also charge the shells and cause them to glow. This LPG will not be easily tamed - but perhaps you are also a cruel master?\u003c\/p\u003e","brand":"Herzlich Labs","offers":[{"title":"Default Title","offer_id":53165671022935,"sku":null,"price":699.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/9163\/9639\/files\/chem_lpg.jpg?v=1774940337"}],"url":"https:\/\/www.herzlichlabs.com\/collections\/filters.oembed","provider":"Herzlich Labs","version":"1.0","type":"link"}