Just wanting to confirm the full extended length, description says "37, is that accurate?

The K&M mic boom at it's full extension is a total of approximately 29" from the point at which the mic boom meets the stand to the threads where the mic clip is mounted. There is approximately 7.75" behind that point where the boom exits the stand clamp to the rear of the boom. Therefore, the entire length of the boom is approximately 37", but your mic reach will depend on the length of the microphone plus 29" from the point that the mic stand and boom meet. You will get close to a 37" reach, but at that length it is necessary to hang additional weight on the back of the boom if you have a heavy mic (or bungee cords to hold up a mic such as an Electrovoice RE-20). I have used mine with an EV RE-20 since 2018 and it has held up, but it has developed a slight bend from using it with the EV at extended lengths for days or weeks at a time.

what is the maximum extension?

Hello, Boom arm length is 800 mm. If you have any more questions, please feel free to reach out to us at any time. Janine F.

In addition to zoom can the boom twist within the mount?

The boom can be moved left to right at any time. Up and down requires tightening and loosing. The small knobs for length allows for the mic to be be turned as needed.

21120 Microphone Stand Boom Arm

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎤 Elevate your sound game with the boom arm that means business.

ROBUST LOCKING SYSTEM - Large wing nut ensures rock-solid stability, so your mic stays exactly where you want it.
PREMIUM ALLOY STEEL BUILD - Engineered for durability and sleek black finish that complements any studio or stage.
TRUSTED BY PROS WORLDWIDE - Join the ranks of audio experts who rely on K&M for flawless performance.
PRECISION TELESCOPIC REACH - Extend your mic setup effortlessly beyond 37 inches for perfect positioning every time.
SILENT SCRATCHLESS SWIVEL - Adjust angles smoothly without distracting noise or wear—professional-grade finesse.

The K&M 21120 Microphone Stand Boom Arm features a two-piece telescopic design with over 37 inches of adjustable reach, a silent and scratchless swivel joint for smooth angle adjustments, and a large wing nut locking system for secure positioning. Crafted from durable black alloy steel, it’s a trusted choice among professionals seeking reliable, high-quality audio accessories.

Specifications

ASIN	B003BQ4IL2
Body Material	Alloy Steel
Color Name	Black
Connector Type	5/8" Threaded Mount
Customer Reviews	4.5 4.5 out of 5 stars (71)
Date First Available	6 August 2012
Item Weight	726 g
Item model number	21120
Material Type	Alloy Steel
Product Dimensions	59.69 x 7.11 x 10.67 cm; 725.75 g
Size	21120.577.55

Reviews

A**R

Excellent construction and works perfectly.

18.11.2025

S**T

much better and sturdier than the cheaper boom arms...

16.09.2017

W**M

A good solid boom at a great price. Would have been a 5 star but I own an Atlas stand so I know what a really good one looks like.

14.07.2019

M**Y

K&M products never disappoint, and the boom arm is no exception. It is very sturdy, of great quality, and perfectly resolves the need for a longer arm on stage!

7.10.2025

M**S

Work well!!! Good quality!

21.09.2025

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