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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Description

🎤 Elevate your audio game with precision and style!

EXTEND YOUR SOUNDSTAGE - Telescopic boom arm adjusts smoothly beyond 37 inches for perfect mic placement.
TRUSTED BY PROS WORLDWIDE - Join the global community of audio experts who rely on this stand for flawless performance.
WHISPER QUIET ADJUSTMENTS - Silent, scratchless swivel joint lets you fine-tune angles without distracting noise.
LOCK IT DOWN WITH CONFIDENCE - Large wing nut locking system ensures rock-solid stability during every session.
BUILT TO LAST DESIGNED TO IMPRESS - Premium alloy steel construction with a sleek matte black finish for professional durability.

The 21120 Microphone Stand Boom Arm features a robust two-piece telescopic design extending over 37 inches, a silent swivel joint for smooth angle adjustments, and a large wing nut locking system for secure positioning. Crafted from durable alloy steel with a matte black finish, it’s a trusted choice among professionals seeking reliable, long-lasting microphone support.

Specifications

ASIN	B003BQ4IL2
Base Type	Tripod
Body Material Type	Alloy Steel
Brand Name	K&M
Color	Black
Customer Reviews	4.6 4.6 out of 5 stars (75)
EU Spare Part Availability Duration	10 Years
Finish Type	Matte or similar non-glossy finish
Global Trade Identification Number	04016842209828
Included Components	Telescopic Boom Arm, Swivel Joint
Item Dimensions	59.7 x 7.1 x 10.7 centimeters
Item Type Name	Music Stand
Item Weight	1.6 Pounds
Manufacturer	Connolly Music Company
Manufacturer Part Number	21120
Material Type	Stainless Steel
Maximum Height	37 Inches
Microphone Stand Thread Size	5/8 Inch
Model Number	21120
Product Style	Boom microphone stand with a telescoping boom arm
Unit Count	1 Count

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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