One Control LX Tuner with BJF Buffer Utility Boxes

by One Control

You'll earn 0 Prymaxe Rewards points!

  • FREE Shipping
  • Price Match Guarantee (New Products Only)
  • FREE Two Year Warranty
  • Lifetime Support
  • One Control LX Tuner with BJF Buffer Utility Boxes

    What do we all need from a tuner? Something reliable that does not change the tone of your instrument, a unit with a great display that is easy to see on dark stages and in bright sunlight, and a high-quality signal buffer to keep your tone pristine. Above all, you need a tuner you can trust to be ready for you in all situations.

    In the old days, many tuners had built-in buffer circuits. Usually by incorporating the buffer circuit into the tuner pedal at the start of the pedalboard signal chain, there would be no attenuation of signal after that point in the signal path. Unfortunately, the buffer circuits usually changed the tone, which resulted in many players demanding “true bypass” effects and tuner units.

    The perfect tuner should never change the original tone and sound of your instrument. However, there are many benefits to having a properly designed buffer circuit in your signal chain. With a well-designed buffer, you don’t have to have a true-bypass tuner only – you can have the best of both worlds.

    In some cases, a buffer may not be needed or wanted within your chain. In the older-style circuits, the impedance changes through buffer use and effects that are used to being connected directly to the guitar (such as some old-school fuzzes) may change the sound in unwanted ways, as well as change the response and feel of these pedals. We have equipped the new LX TUNER with an ON/OFF switch to bring the BJF Buffer circuit in or out of the circuit in case you are using effects such as these. You can use the LX TUNER as both true bypass or with the BJF Buffer as needed.


    This amazing circuit is installed in many switchers from One Control, and is one of the most natural-sounding buffer circuits ever created that destroys the old image people have from using old buffer circuits that changed the tone of the instrument.

    Created at the request of many of the world’s greatest guitarists by Björn Juhl, one of the greatest amp and effects designers in the world, the BJF Buffer is the answer to keeping your tone pristine in all sorts of signal chains, from the stage to the studio.

    Even when the LX TUNER is in bypass mode, the natural tone is not degraded in any way, while at the same time the signal itself is made stronger and more robust to prevent any attenuation due to poor connections from cables or connectors in the signal chain. When the LX TUNER is activated, the output can easily be muted for silent tuning. Our smaller housing does not take up any extra pedalboard real estate, allowing you to make the most of your precious pedalboard layout. This is the tuner with buffer that has been demanded by guitarists and bassists- the One Control LX TUNER with BJF Buffer!

    Ultra-high precision tuning circuit – the LX TUNER with BJF Buffer uses the Korg Pitchblack Custom circuit (licensed by One Control from Korg, Inc for this unit). This latest iteration of the Korg Pitchblack tech has a beautiful, three-dimensional, and stunningly visible display with new ultra-high precision tuning resolution of plus/minus 0.1 cents in strobe mode. The tuning is responsive and fast for ease of use on stage, and yet accurate enough to set intonation on your instrument, like the expensive strobe tuners from the old days. You can tune easily while changing the display mode if you want a different view.

    Four Display Modes – In addition to the standard “A Mode”, the LX TUNER has “STROBE MODE” and “HALF STROBE MODE” which shows pitch changes in the direction and speed in which the meter moves, making it very easy to see even small discrepancies in pitch, from top to bottom when aiming for the reference line. There is also a “Regular B Mode” which is a unique vertical display if you would prefer a different visual orientation for tuning.

    Calibration settings for a wide range of concert pitches – the LX TUNER can set the initial reference pitch of A4 between 436 to 445 Hz in 1Hz steps. Just by changing the reference pitch by 1Hz, the vibe of a track may be completely different. By being able to use all of these various concert pitches, you can tune with confidence regardless of the playing situation or other instruments you may be called to tune with.

    Long Battery Life – The LX TUNER with BJF Buffer can be powered by any standard center negative 9vDC power supply, as well as standard 9v batteries. You can use the LX as an auxiliary power supply in case of trouble onstage, or you can tune off-stage and away from your power sources when needed. Or simply carry the LX TUNER with you in your gigbag for quick, convenient tuning backstage or in the studio.

    Convenience – In the last few years, “clip-on” tuners have become popular with guitarists and bassists. These utilize a microphone which picks up the signal electro-acoustically – which is great if you’re in a silent room by yourself. However, once you are in the band room for rehearsal or at the live show with other loud instruments, these types of tuners will become confused by the plethora of vibrations they will pick up from the other players, the PA system, and the ambient noise. With the LX TUNER, you can be sure that only your instrument will be detected so that you can tune reliably and quickly with no interference from other sounds no matter how loud.

    One Control LX Tuner with BJF Buffer Utility Boxes Features:


    • Precise Unity Gain setting to 1
    • Input impedance will not change the tone
    • Will not make output signal too strong
    • Ultra-low noise output
    • If the input is overloaded, the output tone will not be degraded.



    • Input Impedance: 500KΩ
    • Output Impedance: 60Ω

    Tuner(KORG PitchBlack Custom)

    • Scale:12 note equal temperament
    • Detection Range: E0 (20.60 Hz) – C8 (4186 Hz)
    • Calibration Range:436 – 445 Hz (1Hz steps) Detection
    • Accuracy:within +/- 0.1 cent
    • Input Impedance:1MΩ(when tuner is turn on)

    Power Supply

    • Power:DC9V Negative Tip 2.1mm ballel
    • battery:9V
    • Battery Life:approximately 15 hours (A4 continuous input, tuner on, display mode: Regular A, using a 9 volt zinc-carbon battery)
    • Current Draw:40mAmax
    • Size:67 (W) x 114 (D) x 45 (H) mm
    • Weight:249g
  • We want you to feel confident with your Prymaxe purchase, which is why when you purchase a new product from us, you are automatically enrolled into our FREE Two Year Warranty.* 


    What is covered:

    • Brand new (non-clearance) products that have been purchased within the last two years
    • Products that malfunction under normal use
    • Cost of repairs


    What is NOT covered:

    • Used, vintage, and clearance products
    • Products purchased more than two years ago
    • Cost of shipping both ways
    • Items with clear signs of abuse (up to Prymaxe’s discretion)


    * We reserve the right to end this promotion at any time.


  • When you place an order at Prymaxe, you can rest assured that your item will be carefully packaged. Our shipping team is dedicated to making sure your item arrives in perfect condition and on time.

    All in stock orders placed before 1pm EST will ship same day and all orders placed after the cutoff will ship the next business day*. If you need an order immediately, please let us know and we’ll try our best to accommodate your request.

    * Our same day shipping policy may be temporarily suspended during a sale or if you pay with Affirm. Rest assured, we will do everything we can to get your order out as quickly as possible. Please email us at if you are placing an overnight order and need it to go out immediately.


    Domestic Shipping
    Most orders shipping within the US will ship via USPS or FedEx and are fully insured, we also offer express options if you need an item within 24 hours. All tracking numbers will be sent via email after the item is shipped. If you did not receive your tracking number please feel free to call or email us. 

    All US Orders $49+ Ship for FREE

    International Shipping
    We love and truly appreciate all of our International customers. All of our international shipments are fully insured and are guaranteed to be delivered or your money back. We offer a variety of shipping options for you to choose from and if for any reason there is an issue with your order we will make it right, that is our promise you. 

    Pre-Order Shipping: 

    Pre-Orders typically ship with 2 weeks. In the event a product is backordered we will contact you with an exact shipping timeframe. 

    Smaller items will ship USPS First Class. 

    What if my package gets lost in transit?
    Though we successfully ship thousands of packages a year, sometimes shipments don't always go as planned. In the event your package is lost in transit, please email explaining the situation. We will open a case with the shipping company to try to locate your package. If 30 business days have passed (90 business days for international customers) and your package is still lost, we will issue you a Prymaxe Digital Gift Card for the original purchase price.

    USA shipping only for Barber Electronics, Boss, Darkglass, Dunlop, DryBell, EarthQuaker Devices, Eventide, EVH, Fender, Gretsch, Korg, Marshall, Music Man, MXR, PreSonus, Quilter, Roland, Schecter, Shure, Source Audio, Way Huge, Tech 21, Vertex, Voodoo Lab, Vox, Wampler.

    What if my package gets stolen?

    If your tracking number states your order has been delivered but your product is no where to be found you must immediately call your local police department and open an investigation. We will do our best to help but ultimately we are not responsible if this does occur.


  • Please note: We are a small, family owned business. While we want to make sure you are satisfied with your purchase, we would like to try to limit the amount of returns as much as possible. This helps both us and the customer save time and money. If you are unsure about a product, please contact us before you complete the purchase, and we'll do our best to find the item that will best suit your needs. Prymaxe reserves the right to define abuse of the return policy on a case by case basis and consequently refuse subsequent return requests by said abuser and place them "All Sales Final".

    Last Updated: October 04, 2022

    45-Day Satisfaction Guarantee

    If you are not 100% satisfied with your purchase, you can return it within 45 days of the original purchase date for a store credit refund, or within 14 days of the original purchase date for a refund to the original purchase method (PayPal, credit card, etc). If an item is not received by us within the 45-day window, the package will be refused. All new items returned must be in BRAND NEW condition with zero signs of wear or use and must be returned in the original packaging with ALL materials (free/bundled items -- must be unused/unopened, warranty cards, plastic, pouches, manuals etc.).

    Our 45-Day Satisfaction Guarantee covers brand new products only -- it does not cover used and clearance products (see below). It also does not cover items in the “What is NOT Returnable” list below. Please note: All actual shipping fees paid by Prymaxe will be deducted from your refund along with a 10% restocking fee. This includes orders that qualified for free or subsidized shipping. Return shipping must be paid by the buyer. If you received a defective or incorrect item, please see our FAQ section below.  

    Used and Vintage: 

    All Used and Vintage items come with a 48 hour approval period. Please contact us directly at within 48 hours of receiving your product for us to set up a manual return for you. Be sure to include your order number and reason for return in the email. All Used/Vintage items must be returned in the same condition they were sent to you in, as well as include all materials that came with it.

    What is NOT Returnable:

    • Accessories (this includes all pickups, strings, picks, pedalboards, tuners, etc.)
      • However, if you received accessories with the product as part of a bundle, the accessories must be returned with the product, and they must be unused and unopened
    • Clearance Items (Clearance items are clearly marked with "CLEARANCE" in the title -- INCLUDING "DEMO CLEARANCE" OR "GENTLY USED CLEARANCE")
    • Special/Custom Orders
    • Personal items (such as headphones)
    • Any item that states all sales are final/no returns on the product page

    Return Instructions:

    All returns should be insured by the buyer and sent via UPS, Fedex, or USPS with tracking. Please do not write on or attach tape or labels to the product box (these will be refused) -- use a packing box to return the product. Attach a shipping label with the RMA number onto the shipping box. Packages without a valid RMA number on the outside of the box will be refused.

    To request an RMA number, please email We do not issue RMA by phone.


    When will I get my refund?

    Once your return is received by us, your refund will typically be processed within 10-15 business days. It typically takes a few business days for all credit card refunds to be processed and reflected on your statement. This means it will take a few extra days for your refund to show in your account after your return is processed. Store credit refunds will be given in the form of a e-gift card which will be available for immediate use after it is emailed to you. Please note: All actual shipping fees paid by Prymaxe will be deducted from your refund. This includes orders that qualified for free or subsidized shipping. Return shipping must be paid by the buyer. If you received a defective or incorrect item, please see the next question.  

    What if I receive a defective or incorrect item?

    If a product is defective upon arrival, or the wrong item was received, all the shipping fees will be covered by us and we will send you a replacement once the original item is received. If for any reason a replacement wont be available for a significant amount of time, we will issue you a store credit to use on another item. For defective items, Prymaxe reserves the right to refuse the return if we determine the reason for the unit failing was not covered under the warranty (i.e., if the item was damaged due to user fault or error). If you feel your item was damaged in shipping, please take plenty of pictures of the damaged box and item and immediately contact us so we can open a claim with the shipping company.

    Please be very diligent with testing your defective item. Be sure to try other guitars, power supplies, cables, and amps. We also request that you take a video of the item not working. If we receive your item, test it, and find it to be working, we will give you a refund minus the cost of shipping both ways and charge a 20% restocking fee.


    When must I ship my return?

    Your return must be received by us within 45 days of the original purchase date for store credit, or postmarked by 14 days for a refund to the original purchase method (PayPal, credit card, etc). This means you must ship your return with enough time for us to receive the package within the deadline. If it does not arrive within 45 days, we will refuse the package. If you feel you sent the package within a reasonable time frame, but it arrived late due to the shipping company’s error, please immediately contact us to make an appeal before we refuse the package.

    What if I pre-ordered an item?

    If a pre-ordered item arrives outside of the 45 day window from when you ordered it, you will have 7 days from the arrival date to send it back for store credit.

    Why was my package refused?

    There are a number of reasons your package could be refused by us, including:

    • It was a new/demo item received outside of the 45-day window
    • It was a clearance, accessory, or other non-returnable item
    • The package is missing items that were included in the original shipment
    • The item shows signs of wear
    • The original product box was damaged or written on/the item was packaged in a separate shipping box

Customer Reviews

Be the first to write a review