Are you trying to find microphone pop filters among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!
We investigated and evaluated a number of the top-selling microphone pop filters on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 27 hours of research and did 57 microphone pop filters tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!
An overview of our top picks
Table of contents
The best microphone pop filters you can buy today
- Double Layered Screen Pop Filters: The first screen blocks air blasts as any pop filter normally would; The gap in between then disperses any remaining air pressure, so by the time it passes the second screen, the blast is easily contained to produce great quality recordings.
- Universally Compatible: Adjustable screw rotating clamp with scratch-proof gripper can secure variety tubular mounting booms or microphone stands. Eliminates anyone's extra elements that prevents them from recording/projecting their best vocals to the public or their audience.
- Adjustable Gooseneck: The steel metal gooseneck holder fully supports the filter's weight and keep it in place. You can adjust the angle and distance between the screen and the microphone to best fit your needs for yours lovely voice.
- Functions: Banish the dreaded hissing and lisping sounds that come when pronouncing the letter "S" and blocks those ugly "plosives" that follows "B" and "P". It is a great item for singers, streamers and actors alike who want help achieving the best possible performance and help protect the spitting all over your personal microphone.
- DRAW THEM IN - NOT TOO LOUD, NOT TOO QUIET- WHILE MOST Blue Yeti Microphone Filters are no better than DIY mesh pop filters, Surface Spacing acts like an AMPLIFYING MODIFIER, toning down those overly excited moments that make your voice sound brash, without turning a whisper into silence during those “Quiet Spoken Secrets” moments when you need to REEL YOUR AUDIENCE IN.
![Pop Filter,PEMOTech [Upgraded Three Layers] Metal Mesh & Foam & Etamine Layer Microphone Pop Filter,Microphone Windscreen Cover,Handheld Mic Shield Mask for Vocal Recording,Youtube videos,Streaming](https://m.media-amazon.com/images/I/51ErUAzNUmL.jpg "The 8 Best microphone pop filters of %currentyear% 49")
- ▲▲NOT FOR BLUE YETI▲▲ WIDE APPLICATIONS - Our microphone pop filter suitable for 45 mm to 61 mm diameter microphones such as AT2020, AT2035, AT4040, AT2050, AT2020+, Samson Meteor , Scarlett CM25 ,CAD GXL2400, Apogee, Razer Siren X, BADAAX Mic, Rode NT1A, Rode NT-USB, MXL 770, MXL 910, MXL 2010, CAD U37, BM-800 and many other microphones.
- THREE LAYERS FILTER MIC SHIELD - Three layers design include foam layer, metal net layer and basic etamine layer can effectively reduces the plosive, pops, crackles, wind interference, breath sounds when recording vocals. Absolutely necessary for recording, speaking or singing. This studio mic shield isolation helps to get your best vocal recording.
- MAINTAIN CLEAN - Metal mesh matches plastic frame in a special appearance design. Functionally prevents saliva, keeping cleanness for your microphones and protecting your microphone.
- EASY TO SET UP - Handy and quick to assemble and disassemble from the microphone and firmly fixed on your mic with the combination design of elastic bands and inner rubber ring, Special design perfectly matches with your microphones.
- PACKAGE & GUARANTEE - 1 X Pop Filter(microphone is NOT included).
- 【Two-screen Pop Filters】 The first screen blocks air blasts as any pop filter normally would; The gap in between then disperses any remaining air pressure, so by the time it passes the second screen, the blast is easily contained.Efficiently reduce the plosive, wind interference, saliva spraying during your recording or broadcasting, get a clear and loud sound.
- 【Adjustable Gooseneck】The pop filter has a flexible 360° gooseneck clip stabilizing arm that can support its own weight and enough to hold the microphone stand and the inner rubber ring is perfectly matched to your microphone.
- 【MULTI-SCENE APPLICATION】:Studio microphone mic wind screen pop filter mask shied is essential item for recording, speaking or singing; can be used for singing, voiceover, podcasts, vlogging and anywhere else you need quality sound.
- 【Functions】 Banish the dreaded hissing and lisping sounds that come when pronouncing the letter ""S"" and blocks those ugly ""plosives"" that follows ""B"" and ""P"".Swivel mount for easy installation.
- 【PACKAGE & GUARANTEE】:1 X Pop Filter.If you have any problem after receive this item, please don't hesitate to contact us, we will try our best to resolve all issues.
![Pop Filter,Aokeo [Upgraded Three Layers] Metal Mesh & Foam & Etamine Layer Microphone Windscreen Cover Handheld Mic Shield Mask,Microphone Accessories for Vocal Recording,Youtube videos,Streaming](https://m.media-amazon.com/images/I/51f-whFirJL.jpg "The 8 Best microphone pop filters of %currentyear% 59")
- WIDE APPLICATIONS - Our microphone pop filter suitable for 45 mm to 63 mm diameter microphones such as Aokeo Microphones, AT2020, AT2035, AT4040, AT2050, AT2020+, Samson Meteor , Scarlett CM25 ,CAD GXL2400, Apogee, Razer Siren X, BADAAX Mic, Rode NT1A, Rode NT-USB, MXL 770, MXL 910, MXL 2010, CAD U37, BM-800, Tonor, Neewer and many other microphones. NOTE: THIS WILL NOT FIT THE BLUE YETI
- THREE LAYERS FILTER MIC SHIELD - Three layers design include foam layer, metal net layer and basic etamine layer can effectively reduces the plosive, pops, crackles, wind interference, breath sounds when recording vocals. Absolutely necessary for recording, speaking or singing. This studio mic shield isolation helps to get your best vocal recording.
- MAINTAIN CLEAN - Metal mesh matches plastic frame in a special appearance design. Functionally prevents saliva, keeping cleanness for your microphones and protecting your microphone.
- EASY TO SET UP - Handy and quick to assemble and disassemble from the microphone and firmly fixed on your mic with the combination design of elastic bands and inner rubber ring, Special design perfectly matches with your microphones.
- QUALITY ASSURANCE- High quality rubber bands and synthetic metal mesh are used to make the filter more durable. If you encounter any problems in the use process, please contact us in time, we will provide you with satisfactory service.
- DUAL-LAYER POP FILTER: The first screen blocks air blasts as any pop filter normally would; The gap in between then disperses any remaining air pressure, so by the time it passes the second screen, the blast is easily contained to produce great quality recordings
- ADJUSTABLE GOOSENECK: The steel metal gooseneck holder fully supports the filter's weight and keep it in place. You can adjust the angle and distance between the screen and the microphone to best fit your needs for yours lovely voice
- CLERAER SOUND: Banish the dreaded hissing and lisping sounds that come when pronouncing the letter "S" and blocks those ugly "plosives" that follows "B" and "P". It is a great item for singers, streamers and actors alike who want help achieving the best possible performance and help protect the spitting all over your personal microphone
- WIDE COMPATIBILITY: Adjustable screw rotating clamp with scratch-proof gripper can secure variety tubular mounting booms or microphone stands. Eliminates anyone's extra elements that prevents them from recording/projecting their best vocals to the public or their audience
- EASY OPERATION: Swivel mount for easy installation, removal and location adjustment. Note: Microphone is NOT included.
- CLEARER SOUND: The Arisen mic pop filter is made of a double layer of metal material, which protects the microphone filter from corrosion by saliva and other steam. Besides, the inseparably close double-layer of the metal pop filter can more effectively eliminate "p" "b" and the hissing of the letter "S" to achieve the perfect sound quality optimization effect.
- 360° ADJUSTABLE GOOSENECK of pop screen：The gooseneck tube of the Pop Filter is sufficient to support the weight of the metal blue yeti pop filter and hold it securely in place. And you can allow adjusting the angle and distance between the pop filter for microphones and the microphone by changing the angle of the gooseneck tube, which filtering noise or burst sound at the angle that works best for you.
- DOUBLE METAL MESH of POP FILTERS: Sometimes, you will find the filtering effect is not apparent by using a single layer pop filter metal to filtering out the noise. But here, Arisen mic windscreen does something that other brands on the market are having a hard time doing, that's the Arisen upgraded versions pop filter that filter out noise while maintaining natural sound quality, resulting in high-quality sound.
- Widely compatible: The Adjustable swivel clamp with an anti-scratch feature that allows the mic screen to be securely attached to a table or device when installing the pop filter for a condenser microphone, or it is easily installed in any microphone stand or Blue Yeti microphone. Also, the ergonomic design of the adjustable clamps for audio technica pop filter makes it easy to install in music studios, offices, individual studios, and recording studios.
- FRIENDLY CUSTOMER SERVICE: The ARISEN microphone filter shield can be easily installed to different microphone stands without breaking the stands. And more and more video bloggers chose it to optimize the sound quality because that gets more fans likes from their followers by using this black pop filter. Also, the ARISEN WINDBOX pop filter mesh provides 12 months warranty, any concerns. Please be free to contact us.
- 【Double Layer Pop Filter】- LILALIWA pop filter for microphones features double layers of nylon mesh, which can efficiently reduce plosives, wind interference and saliva spraying during recording or broadcasting, and help users get a clear and loud sound.
- 【Clearer Sound】- Banish the dreaded hissing and lisping sounds that come along with pronouncing the letter "S" and blocks those ugly "plosives" that follow the sounds of "B" and "P".
- 【Adjustable Gooseneck】- The pop mesh shield has a flexible 360° gooseneck clip stabilizing arm that can support its own weight and is strong enough to hold the microphone stand.
- 【Easy to Assemble】- The adjustable screw rotating clamp with scratch-proof gripper can secure a variety of tubular mounting booms or microphone stands, thus preventing your devices from damage.
- 【Protect Your Loved Mic】- LILALIWA professional double-layer pop filter is designed for singers, streamers and actors alike who would like to achieve the best performance. It also helps protect your personal microphone from spit.
- Eliminate the sudden burst of air pressure when pronouncing "s","b","p" that causes cracking sound in your vocal recordings.
- Includes a double screen mesh for studio microphone recording.
- 360 degrees flexible wind screen pop filter with adjustable clamp fixes securely to mic stand.
- Adjustable gooseneck holder for precise positioning.
- Protects your microphone from surplus spits and other dusts.
- ❉【ELIMINATE NOISE INTERFERENCE】The inner side of the recording microphone isolation shield is made of high density absorbent foam that can reduces noise and preserve the clarity of your voice and instrument sound, while eliminating audio wave bounce back and interference to create an optimal recording condition in the studio,home or office
- ❉【PORTABLE & FOLDABLE】 The folding panel design features enables angle adjustments, provide you with the great recording effect,the compact and foldable design makes it easier for you to carry it around you
- ❉【STURDY & DURABLE】 The microphone isolation shield is composed of 5 panels made of high-quality iron to ensure that it is durable and sturdy and it can be used for a long period of time
- ❉【ADJUSTABLE POP FILTER】 The metal gooseneck holder fully supports the filter's weight and keep it in place. You can adjust the angle and distance between the screen and the microphone to best fit your needs for yours lovely voice,dual-layer pop filter making the music recording effect more clear
- ❉【VERSATILITY】 The microphone sound shield can be fixed on a countertop or tabletop, we have a tabletop monopod and a conversion nut , suitable for blue yeti ,studio and most condenser microphone recording equipment, or you can use it with your own tripod, also can be mounted to a microphone stand for your professional recording . Great for vocal,acoustic recording and podcasting sound booth
- Professional customized HyperX SoloCast microphone pop filter , perfectly adapted to SoloCast, also for HyperX SoloCast White.
- Microphone pop filter can filter the noise around you, improve the recording quality, and give you a better experience of using your microphone！
- Microphone cover keeps the microphone free from dust and saliva.
- Microphone Windscreen is made of high-density foam with good elasticity for a perfect fit.
- Attention: Mic cover It is vacuum packed, when using, you can leave it for a while to let it recover its original state.
- Double Layer Pop Filter:This pop filter for microphones features double layers of nylon mesh, which can efficiently reduce plosives, wind interference and saliva spraying during recording or broadcasting, and help users get a clear and loud sound.
- ADJUSTABLE GOOSENECK: The steel metal gooseneck holder fully supports the filter's weight and keep it in place. You can adjust the angle and distance between the screen and the microphone to best fit your needs for yours lovely voice.
- Easy to Assemble: The adjustable screw rotating clamp with scratch-proof gripper can secure a variety of tubular mounting booms or microphone stands, thus preventing your devices from damage.
- Cleaner Recording: Banish the dreaded hissing and lisping sounds that come along with pronouncing the letter "S" and blocks those ugly "plosives" that follow the sounds of "B" and "P".
- After-Sales:Before Delivery, It Is Checked And Sent Out. If You Have Any Specific Questions About Installation And After-Sales, Please Contact Customer Service. Customer Service Can Solve Problems Online. ( For Sale Is Pop Filter Only!)
- High-Quality Noise Reduction: Our microphone isolation ball effectively reduces unwanted noise and interference, resulting in clear and professional-quality recordings.
- Versatile Compatibility: With a detachable jacket that fits microphones with diameters between 40-70mm, our isolation ball is compatible with most USB and condenser microphones on the market.
- Durable and Lightweight Design: Made with high-quality materials, our isolation ball is both durable and lightweight, making it easy to transport and use in various settings.
- Easy Installation: Our isolation ball can be easily mounted on a variety of desk tops, tripods, cantilever arms, or floor stands, allowing for quick and easy setup.
- Protects Your Microphone: In addition to enhancing the quality of your recordings, our isolation ball also provides protection for your microphone from corrosion and accidental damage.
- Microphone cover set: 5 pieces foam mic cover, 2.9 x 2.5 inches, caliber size is 1.4 inches, suitable for most standard handheld microphone, not for headset mic
- Thick and soft foam: the ball-type foam microphone windscreen is soft and thick, has good elasticity and shrinkage, convenient to set on the microphone
- Widely application: the foam ball windscreen for microphone is suitable for ktv, dance ball, conference room, news interviews, stage performance and other places
- Clean and sanitary: these mic wind covers can keep your microphone away from saliva and moisture influences, allow you to use the mic in an ease and comfortable mood
- Attention: the foam microphone covers was squeezed in a bag, so please put it out for a little time then it will return to its original shape
- As the perfect mic pop filter, wind screen foam cover compatible with Fifine USB-powered podcast audio microphone for streaming broadcast and YouTube videos.
- Fifine Podcast K670 mic pop filter helps to reduce surrounding sounds, ensuring that your mic is isolated from background noise.
- The foam makes the microphone for recording audio sound 100% better and clearer. Easy to use as great sound at a great price！
- The wind shield work great with your fifne for quick videos, interviews, and voiceovers (for radio/TV) .
- Package included: 1 x Foam Windscreen Cover.
- ♫ Professional Pop Filter ♪ It is special desiged for MV7 Microphone. No more PLOSIVES!
- ♫ 3 Layers Design ♪ Double layered steel meshs in outside and one layered foam windscreen in middle. Let you away the annoying poping of "S" "B" and "P". Get a clear and loud sound.
- ♫ Flexible Mic Mask Shield ♪ Swivel 360° flexible gooseneck is strong and pliable, supports the pop shield head at any angle to apply different placements and keep it in place.
- ♫ Adjustable Clamp ♪ The C-clamp mount has a 1.85 inch maximum grip. The rubber mat on the clamp could protect your mic without any scratches when you swivel side screw.
- ♫ Protect Your Loved Mic ♪ Let your loved mic stay away from blast saliva, and always keep it clean and health. NOTE: Not Include MV7 Mic.
- PROFESSIONAL - Professinal designed for Blue Snowball Condenser microphone, fits the Blue Snowball iCE Mic perfectly
- PERFECT FILTER - Reduce wind, crackle and other noise around you to improve your sound quality. Avoid the terrible hissing and lisping sounds that come when pronouncing the letter "S" and blocks those ugly "plosives" that follows "B" and "P"
- GOOD PROTECTION - Prevent dust and saliva from entering it, extend the life of your microphone. Suitable for both indoor & outdoor applications
- HIGH QUALITY - Easy to clean, keeps the filter clean and well-working all the time
- EASY TO USE - Not only as a replacement to a pop filter but also better than pop filter that doesn't block everything in front of you. Ideals needed for a beginner.
- Advanced Noise Filtering: Equipped with premium high-density memory foam, achieve crystal-clear audio by reducing ambient noise, breath sounds, and unwanted plosives. Elevate your recordings to professional quality
- Mic Protection: Crafted from hydrophobic memory foam, our filter not only enhances sound quality but also shields your microphone from spilled liquids, spittle, and moisture. Extend the lifespan of your valuable audio equipment.
- Enhanced Mic Care: The filter's ideal softness and thickness provide a protective cushion, preventing scratches and minimizing collision damage to your microphone
- Perfect Fit for Popular Models: Precision-designed for AT-2020, AT-2035, AT-2050, ATR2500, ATR2500X, and AT-4040 microphones. Easy installation ensures a snug fit, enhancing your recording experience
- Satisfaction Guaranteed: Your satisfaction is our priority. If you encounter any issues or have concerns, don't hesitate to contact us. We are committed to resolving any problems and ensuring your complete satisfaction
- 【Premium Material】The microphone windscreen is made of high-density sponge foam, which is flexible and elastic, lightweight and durable.
- 【Breathable & Practical】The microphone foam cover can filter noise, dust and saliva, prevent popping microphone, and improve sound quality.
- 【Easy to Use】The headset microphone foam cover can be washed and reused, which can effectively help extend the life of the microphone.
- 【Great Value Set】You will get 15 pcs microphone foam covers, each foam cover size is 28 x 22 mm/0.86 x 1.1 inch, enough to meet your needs.
- 【Widely Applicable】The mic windscreen foam cover is perfect for headset microphones, lavalier microphones, podium microphones, etc.
- Dual Layer Mesh Pop Filter: Dual layers of nylon mesh with an air gap work together to reduce and eliminate popping and lisping from your recordings without diminishing clarity.
- Protection from Saliva: Prevents the accumulation of spit on your microphone element which contain corrosive salts.
- Universal Mount: Featuring a unique bracket angle and tension screw, the pop filter can be mounted to virtually any microphone or stand.
- Firm yet Flexible Gooseneck: Metal gooseneck is strong enough to stay where you put it, yet easy to adjust as needed for maximum comfort and quality.
- Cost Savings: Provides an economical solution to help get your best vocal recordings on the first take.,only the best By Our Enabled Brand
- 𝐃𝐨𝐮𝐛𝐥𝐞 𝐋𝐚𝐲𝐞𝐫 𝐏𝐨𝐩 𝐅𝐢𝐥𝐭𝐞𝐫 - IXTECH pop filter for microphones features double layers of nylon mesh, which can efficiently reduce plosives, wind interference, and saliva spraying during recording or broadcasting, and help users get a clear and loud sound.
- 𝐔𝐧𝐢𝐯𝐞𝐫𝐬𝐚𝐥𝐥𝐲 𝐂𝐨𝐦𝐩𝐚𝐭𝐢𝐛𝐥𝐞 - Adjustable screw rotating clamp with scratch-proof gripper can secure a variety of tubular mounting booms or microphone stands. Eliminates anyone's extra elements that prevent them from recording/projecting their best vocals to the public or their audience.
- 𝐂𝐥𝐞𝐚𝐫𝐞𝐫 𝐒𝐨𝐮𝐧𝐝 - Banish the dreaded hissing and lisping sounds that come when pronouncing the letter "S" and block those ugly "plosives" that follows "B" and "P". It is an excellent item for singers, streamers, and actors alike who want to help achieve the best possible performance and help protect the spitting all over your personal microphone
- 𝐇𝐨𝐰 𝐃𝐨𝐞𝐬 𝐈𝐭 𝐖𝐨𝐫𝐤?- Popping sounds can be heightened if you have your mouth too close to the microphone when recording. The plosive sounds interact with the microphone’s first diaphragm, The gap in between then disperses any remaining air pressure, so by the time, it passes the second screen. the blast is easily contained. A mic pop shield or filter acts as a barrier between these sounds and the microphone, with the aim of eliminating them altogether in the final product.
- 𝐄𝐚𝐬𝐲 𝐈𝐧𝐬𝐭𝐚𝐥𝐥𝐚𝐭𝐢𝐨𝐧 - Designed for stable and ultra-secure mounting. The adjustable clasp can fit on surfaces up to 1.75”. This microphone pop filter connects directly to the edge of the table or desk, microphone stand, and boom pole.
How to choose a good microphone pop filters
Does the idea of finding a fantastic microphone pop filters make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!
Your presence here indicates that you are interested in microphone pop filters. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top microphone pop filters products available right now. You might be wondering how we came up with the list. How was this buying guide developed?
First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top microphone pop filters on the market right now!
The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:
Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top microphone pop filters brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.
Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top microphone pop filters based on those.
Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.
Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.
Customer ratings: Would it be accurate to suggest that the microphone pop filters were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.
Customer Reviews: Like ratings, provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.
Seller Rank: This is very intriguing! Not only do you need a good microphone pop filters, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.
Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your microphone pop filters.
Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting microphone pop filters for months and years to come.
Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.
Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.
These are the standards by which we selected our microphone pop filters. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.
Why should you believe us?
There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what microphone pop filters should you purchase in 2022?
This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on microphone pop filters.
