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Mpingo (African blackwood) knob, standard

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Basic Information
Product Name Mpingo (African blackwood) knob, standard
Price USD 27.00
Overview · Replace metal/plastic knob with Mpingo knob
· Expect Mpingo effect of outstanding resonant properties
Product Summary Size : Φ32 x 25 H (mm)
Review 1
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, standard up down 27 (  )
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Supply Infomation



(Shipping cost reduction approx. 10% due to exchange rate fluctuation. 2022.6.26~)

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 .

Description  : 

   1) Model       : MK3225-6.0 or MK3225-6.4 (Mpingo Knob Φ32 x 25H, mm)

    2) Size(mm) : outer Φ32 x 25 height, shaft Φ6.0 or Φ6.4 x 20 depth, 
                           socket set screw 3/16" x 9.5mm length, nut groove Φ18 x 6 depth 

        Size(inch) : outer Φ1.26 x 1 height, shaft Φ0.24 or Φ0.25 x 0.78 depth, 
                           socket set screw 3/16" x 0.37" length, nut groove Φ0.71 x 0.23 depth 
  3) Shaft groove : fit to 6mm (0.24") or 6.4mm (0.25") diameter shaft.

4) Fix to shaft : Tapped on Mpingo body itself and put the socket set screw in, 
                             and then fix with body.
Tapping on wooden body is one of the biggest advantage of Mpingo wood.

) Finishing : 2~3 kinds of premium German natural oil applied on fine-sanded surface. 

) Packing : Mpingo knob 1ea, Socket set screw 1ea and its allen wrench 1ea included.

    7) Handmade by trained woodturning skills in Korea.

    8) Material quality : processed with sound squares selected very strictly from 5~7 
                                   air-dried blocks in Korea after import from East Africa.

    9) There are somewhat distribution of wood grain & color due to natural material.

Note  :   

     1) This item limits to Socket set screw fixed type knob and use is possible.
     2) Especially, your knob internal sizes have to fit with Mpingo knob.
Please check carefully related sizes of your knob and compare to Mpingo knob before order.
 Separating of original knob and fixing Mpingo knob should be work by yourself. 
     4) Avoid direct sunlight or warm atmospheres as possible.  

About material  :  African blackwood (Mpingo)

       -. Mpingo : Swahili name of African Blackwood ( Swahili : East African local language)
                          Botanical name : Dalbergia melanoxylon
Density(air-dry) : 1.3 

        -. African blackwood listed by CITES as a protected wood since Jan. 2017.
           (CITES : Convention on International Trade in Endangered Species of Wild Fauna and Flora)
           But, all our raw materials of this wood species were imported in Korea legally from Tanzania on 2002~2004.
           Please refer above photo of official 'Pre-Convention Certificate' issued by Korea government CITES authorities.

Mpingo is much different species from Ebony wood.
Ebony : Botanical name : Diospyros spp. (Ebenaseae), about 200 kinds of species.
Density(air-dry) : 0.9~1.0

Mpingo is renowned for its lots of defects like cracks, splits, knots, worm holes, etc.
            in the log itself, 
and so result in very poor cutting yield ratio to certain size.

Acoustic properties :
Its stability and lovely tonal qualities make it well-knownd as "The Tree of Music"
and it has often used for woodwind musical instrument traditionally like clarinets,
             oboes, bagpipes.
Also, Mpingo is recognized already as outstanding resonant accessories to high-end
             audiophiles worldwide.

Specialist's review :  

  (Below is a review article of very famous audiophile in Korea.
  He is highly respected from so many Korean audiophiles, and he also produce top-rated amp.
  and speakers.
  He used Mpingo knobs several times and posted highly praise on his homepage.
  Moreover, he ordered many quantities for his own amps. like below photos.

  We hope this review can help your understanding for our Mpingo knob.)

The Mpingo wooden knob

  "When I made the amp. a few times, I tried to use acrylic knobs with large quantity instead of
   metallic knob of aluminum, brass, stainless etc. 
It was a more relaxed sound than metallic knob.
   The fact that there are sound improvement effect of wooden knob is now widely known.
    I tried to test with Mpingo knob a few days ago, then the result was amazing.
    It was feeling of an upmarket amplifier a few steps upgraded.

   When put it in small output (2watt to 10watt) amplifier, the sound was running smooth as if prickly
   fluff did shaved and became much less noise despite of turning up the volume.
   In the jazz, when clarinet are blows roughly, it often sounds close to brass.
   But, this Mpingo knob gives as the tone of the woodwinds.

   It can feel more obvious improvement effects than that replaced with expensive Amp. terminals or
   replaced vacuum tube to high price classic tube.
   This is the reason inferred from my way.
    It can be feel the subtle vibrations when grasp lightly the roots/shaft of volume and selector.
    This vibrations goes through selector knob to volume knob and does amplified.
    Amp. chassis can make noise, but the knob is more direct than chassis.
    In short, if the volume and selector is speaker driver, the knob is the enclosure to amplify vibrations.

    Let’s list the sound quality in turn of knob material ;
     Brass -> Stainless steel -> Aluminum -> Acrylic -> Bakelite -> Bubinga(wood) -> Rosewood(wood) ->
    The worst is Brass, and the best is Mpingo.

    In short, the replacement with Mpingo wooden knob is most simple and cheaper way for sound

    It is more effective to replace volume and selector together.
    Also, it is better to keep out of contact with front panel when put the knob to the shaft."

Buyer's review :

    -. "~I have received my package in a good condition. Thank you.
         After installing Club Wood knob and cable damper, the sound of my audio system improves.
         Listening to the music is now more relax and enjoyable.
        The background of music is cleaner, no more harsh treble, very refined high range.
         I am planning to buy more items from you later. Thanks again.
        A.B.from Indonesia 2014.12.7."

-. "Got it just as advertised. Thanks. Excellent quality wood knob." (From ebay buyer, Aug.30.2010.)

     -. "
... compared with Japanese aluminum knob and clubWOOD's Mpingo knob.
         As a result, everybody surprised to the sound difference caused by only one volume knob.
Our choice is Mpingo knob naturally which tone color become more calm and stable."

-. "Ah, this is wonderful thing. After changing volume & selector to Mpingo knob,
        we feel 
dramatic effect like replacement of source or pre-amp."

-. "I heard Tchaikovsky symphony no.6 conducted by Celibidache, and can feel more
        articulated sound of musical instruments.

-. "... fixed to pre-amp volume. I can feel that sound image become clear and residual noise
        are disappeared.

   -. "If you want make the strong tone of Swanee Audio pre-amp to deluxe tone, this Mpingo knob
        should be nice choice.
        Just after replacing to existing metal knob again
, my serious fickle ear refused it."

Custom-order : 

    Please refer above photo or 
     'Mpingo Knob custom-order' listing.

     We have lots of custom-made records of various brand models amp. in Korea market.
     Most of audiophiles in Korea are recognized already about its definite effect.
     If overseas audiophiles have interest in custom-made, please feel free to contact us.

              Don't miss your chance to enjoy more improved sound!

About us :

      We 'clubWOOD' are a manufacturer of premium quality woodcrafts in Korea

      and import various exotic hardwood directly from East Africa.


Shipment  :

   -. We will ship your order within 2~3 business days via international standard post airmail.
    -. Tracking number should be provide after shipment for every order.
    -. Import duties/taxes and charges are not included and buyer's responsibility.

Contact us :

    We are willing to respond to your inquiry, especially in case of large quantity order.
     If you have a question of this item or overall question, please feel free to contact us.  Thanks.


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
1 Mpingo knob review from Indonesia buyer Popular message clubWOOD 2022-03-26 478 5points

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