K&M 21140 | Telescopic Boom Arm with 3/8" Thread & Silent Adjustment

$47.99

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Adjustable Telescoping Microphone Boom Arm

The K&M 21140 is a durable, two-piece telescopic boom arm designed for precise microphone positioning in studio, stage, and broadcast settings. With smooth, silent adjustments and a solid steel construction, it’s ideal for performers and engineers seeking stability and flexibility.

K&M 21140 Competitive Differences

Two-piece telescopic boom design for extended reach
Adjustable length from 16.7" to 28.5" (425 to 725 mm)
Wing nut clamping for silent, scratch-free adjustment
Includes locking washer and ergonomic plastic grip
3/8" threaded connector for compatibility with most mic clips and accessories
Lightweight steel construction for durability without added bulk

K&M 21140 Description

The K&M 21140 boom arm offers professional-grade adjustability and convenience in a compact and lightweight package. Its two-piece telescopic design extends from 16.7" to 28.5" (425 to 725 mm), allowing precise microphone placement for a wide range of applications—from vocal performances to overhead drum miking. Constructed from durable steel and finished in black, this boom arm features a smooth wing nut clamping mechanism for silent, scratch-free adjustments during performances or recordings. A plastic grip and locking washer ensure secure handling and easy setup. Ideal for use in combination with mic stands that feature a 3/8" thread, the 21140 provides the reliable functionality and build quality König & Meyer is known for.

21140 Features

2-piece telescoping boom arm design
Locking washer for secure attachment
Plastic grip for easy handling
Wing nut clamping for smooth and silent adjustment
Black steel construction for strength and longevity

21140 Specifications

Boom Arm Length: Adjustable from 16.7" to 28.5" (425 to 725 mm)
Threaded Connector: 3/8"
Weight: 1.28 lb (0.58 kg)
Material: Steel
Clamping Type: Wing nut
Color: Black
UPC: 4016842209880

Shipping

Orders ship from our northern NJ warehouse the same day if ordered by 3:30PM EST. Transit time ETA's are listed in the image below:

Return Policies

All orders come with our industry leading 90-Day return policy.

Cash Back or Store Credit available for returns within 30 days.
Store Credit available for returns within 31-90 days.

Restocking fees

Unopened Items: 5%
Opened but Mint Condition: 15%
Blemished, Missing/Damaged Packing or Accessories: 25%

Shipping Costs

Buyer is responsible for return shipping costs
If "Free" or discount shipping was provided with original order, our actual shipping cost will be deducted from the amount refunded/credited

Damages & Defects

We will swap any item reported as damaged or defective within 7 days of delivery for free. All transportation and replacement costs will be covered by us (within US48 states).