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Mpingo (African blackwood) knob, custom-order

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Basic Information
Product Name Mpingo (African blackwood) knob, custom-order
Price depend on quotation
Overview · Replace metal/plastic knob with Mpingo knob
· Expect Mpingo effect of outstanding resonant properties
Product Summary All sizes by custom-order except standard MK3225 model
Review 4
International Shipping oversea delivery
Shipping by post office
Shipping cost USD 12.00 ~ USD 30.00

Shipping Rates

  • USD 5.00 or more ~ USD 200.00 underUSD 12.00
  • USD 200.00 or more ~ USD 500.00 underUSD 20.00
  • USD 500.00 or more ~ USD 800.00 underUSD 30.00


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Mpingo (African blackwood) knob, custom-order up down depend on quotation (  )
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Supply Infomation



 Mpingo knob custom-order : accept orders once a month and produce in batches !!!

 -. step1 : inquire always with user's amp. brand & model full name and talk specifications

    step2 : confirm all sizes during 1~7th every month (quotation, payment, closing order)
    step3 : start to produce all orders in batches.
 -. ex-workshop : need approx. 10~15 business days.
 -. shipment : normally possible to ship until 2nd~3rd week every month.
 -. size : buyer should inform each part number's size according to our 'buyer's sizes drawing'.
             contact email :

This item is a new concept sound-improving audio accessory to use outstanding resonant properties of Mpingo wood.
Replace existing metal or plastic knob with our Mpingo knob by yourself and enjoy Mpingo effect on your high-end audio system.
You can feel the microscopic vibrations on roots of volume and selector and this vibration is amplified through the knob.
This microscopic vibration or noise can be absorb by rich resonant properties of Mpingo wood.
This effect of Mpingo wood is unrivalled among many materials including other hardwoods like ebony wood.
This effect is greater in case of volume or vacuum tube and better to replace volume and selector together.
Our Mpingo knob is the most simple way to improve your sound with lower cost .
Custom-order guide  : 

  1. This item limits to socket set screw fixed type knob on out-diameter.
  2. All size except standard model (MK3225) can be make by custom-order. Welcome inquiry always.
  3. Basically cylinder & flange type are available. Besides, special type is needed some further talk.
  4. If you inform each number sizes of below 'Buyer's size drawing', you can order even one piece.

Model naming :

  1. Cylinder type : ex) MK3225 ------ Mpingo Knob, diameter 32mm, height 25mm.
  2. Flange type : ex)  MK4025 F28 -- Mpingo Knob, bottom diameter  40mm, height 25mm, F = Flange, upper diameter 28mm.

Buyer's size drawing

  1. Cylinder type

  2. Flange type

Common for custom-order  :         Required to read 

  1. Procedure :
      a. Please check if your amp. may be in custom-order record list below → talk with 1:1 drawing and quotation → order.
      b. Or, please let me have all sizes of 'Buyer's size drawing' with amp. full name → talk with 1:1 drawing and quotation → order.
          Your some drawing sketch should be more helpful.
  2. Pricing basis :
      a. shape : flange type price is higher than cylinder type.    
      b. size : over approx. 36mm diameter model price goes up quite a bit because it become hard to prepare well-dried raw material.
      c. difficulty : higher processing difficulty, higher price.
      d. quantity : bigger quantity per order of same size, lower price.      
      e. new model discount : 5% discount if no order record.
        ※ exception (we ask to be excused in advance)
         1) change original shape or size, and so other user who have same amp. may not order it.
         2) self-made amp., and so there are no possibility to be order from others.
  3. Shipment : need approx. 10~15 business days, normally possible to ship until 2nd~3rd week every month.
  4. Some of parts are need minimum size for solidity due to wood than metal knob.
  5. Starting point (gold color) & set screw bolt groove are located on the opposite side from the center.
  6. Set screw bolt : Φ3/16inch (≒Φ5 mm), used inch bolt for higher solidity than mm bolt.
                               Bolt length will be select among (6.5 , 9.5 , 12.7 , 16 , 19.2mm).
  7. Even if you order same model with custom-order record, it should check again the specification.
      That's why it may have different sizes in case of special version or different production lot.

  8. Separating of original knob and fixing Mpingo knob should be work by yourself.

Production Features :

  1. Material quality : processed with sound squares selected very strictly from 5~7 years air-dried blocks in Korea after import from East Africa.
 2. Finishing : 3 kinds of premium German natural oil applied.

  3. Avoid direct sunlight or warm atmospheres as possible.
  4. There are somewhat distribution of wood grain & color due to natural material.

Custom-order record : First, please check whether your amp. may be in this list.

Custom-order record example : some of total record photos.
   If your amp. is in the above list and we have it, corresponding photo will be provided.



Payment Information

We accept the following forms of payment : only PayPal  (account :

Shipping Information

  • - Shipping Method : Basically by Post Office, standard (called K-packet) or EMS.
  • - Shipping Area : Worldwide, but there are many countries which are not available standard shipping, even express (like ems) shipping under pendemic.
                              Therefore, even if the order has received, it may discuss about upgrade matter to more expensive shipping method.
  • - Shipping Rate : Shipping cost varies and referred to in each item listing. Normally, over USD200 total amount will be ship by express way (EMS).
  • - Delivery Time : 2 - 5 days

  • Please take into consideration that some products may take additional time for delivery and processing.
    Important : Your order is shipped once your payment has been cleared. Please contact our customer service center if you would like to request an exchange or return on your order.

    - Customs and Duties

    The recipient will be held responsible for international shipments which may be subject to import duties and taxes.

    Please be advised that these charges are levied by the destination country and we do not have control over them.
    In the case that the recipient refuses to receive the parcel, the order will be returned to Korea and will not be re-shipped.
    Relevant expenses (round-trip shipping, customs, etc.) will be deducted from the refund.

Returns & Exchanges

1. Address for returns and exchanges :
- [10911] 128-24 Sangjiseok-gil, Paju-si, Gyunggi-do, Korea (South) clubWOOD

2. Requirements :

Please take into consideration that we only accept qualifying returns but not exchanges. Refunds are issued once the returned products clear our inspection.

  1) An item is eligible for cancellation if :
      - you posted a Return request within 24 hours of payment and your order is still under “Pending” status (if your order is under “Preparing Shipment” status,
        please contact our customer service center) or
      - the order is delayed for more than 10 days since payment and you have not received any notification regarding the delay; or
      - the ordered item is out of stock.

2) We accept return(s) if :
     - you receive a product different from your order; or
     - you receive a defective product.

    ** Return Instructions

     (1) Post a return request on our Return forum within three days of receipt.
          You are required to attach the photos of the received product(s) and include the item code, the order number, and the reason for the return.
     (2) A customer service representative will be in contact to assist you by email or phone.
     (3) Items returned must be in their original condition, which includes tags and any packaging. Also, you need to include a note of your order number, name, and user ID.

      * Please be advised that returns are accepted ONLY IF you followed the instructions above and your return request has been approved by our staff.
         Returns that are shipped to us without any prior consent are not accepted.
      * Please note that EVEN the defective/incorrect item(s) must be returned with all of the tags and labels intact. The item(s) must be sent in their original packaging and unworn.
      * Please include all contents of the original package and free gifts (if applicable) in your return packaging.
      * Shipping fee for any return caused by our fault will be paid by the company.
         However, if EMS’ cash on delivery is not possible then you can scan the return receipt and either mail it with the item to return or post an image of it on the forum.
         The shipping fee will be refunded once the returned item has arrived.

3) We do not accept return(s) if :
     - you are returning the items just because you changed your mind (on size, color, etc.)
     - you are returning shoes, bags, or any other accessories
     - the products are damaged due to your mishandling
     - your return request is not approved by our staff

   The following items are not considered defective :
      * Items that are originally manufactured without tags or labels
      * Items with creases that may have been made while shipping
      * Items with unsatisfactory/incomplete finish due to mass production

4) If there is a missing item from your order :
      * Contact our customer service center by phone or by forum (if you cannot reach us by phone) within 1 day of delivery.
      * Please keep all contents of the original package including packaging material (boxes, plastic bags etc.) with you until you are instructed otherwise.

Please note that we may not be able to process the refund for your missing item if you lose or damage any packaging material.

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Product Q&A
No. Title Posted by Date Views Rates
4 Mpingo knob custom order from J-F L D. France. Popular message clubWOOD 2023-09-24 1365 5points
3 lavardin amp. Mpingo knob custom order (J-F from France) Popular message clubWOOD 2023-09-23 977 5points
2 Plinius 9100 SE Mpingo knob custom-order from Germany Popular message clubWOOD 2023-09-17 1357 5points
1 Leben CS600 amp volume Mpingo knob custom-order Popular message clubWOOD 2023-09-16 1354 5points

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