Is there an USB adaptor or 1/8 for computer hook up?

No. XLR connector only A USB adaptor can be purchased but it must have phantom power.

how many mics for a 16 x 18 room with about 35 people?

It's difficult to answer your question because I don't know how you have the room set up. If you are sitting around 8 ft tables you would need one on each table. These microphones are not set up to carry a long distance. It's a good microphone but is limited somewhat in range. It sounds like maybe you need to look for something else.

why does it say wireless in Connector Type and also says it comes with a 12 ft. connecting cable which is it?

I just looked at the description and I can’t find where it says: “…wireless in Connector Type and also says it comes with a 12 ft. connecting cable which is it?" These are NOT wireless. They are hard wire only. They come with an attached 12ft XLR cable. They are worth every penny. Great quality.

Could 2 of these with a preamp add congregational singing & pipe organ (40x50 sanctuary) for streaming? Another channel connects the sound system.

It probably would but the response would be very tinny sounding. The frequency is mostly high end. Not for music.

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

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Shure CVB-B/O Boundary Condenser Microphone, 12 feet Cable, Omnidirectional (Black)

Product ID: 161875310

Details

Brand
Shure
Colour
Black
Connectivity technology
XLR
Connector type
XLR
Included components
CVB-B/O 12
Model name
CVB-B/O

📡CommShield RF interference guard

🔌12 ft XLR cable included

🎙️Omnidirectional clarity

Description

🎤 Elevate your voice, dominate every room with Shure’s boundary mic brilliance!

RUGGED SHURE BUILD - Engineered for durability and reliability in professional podiums and desktop setups.
COMM SHIELD TECHNOLOGY - Stay interference-free even in the busiest wireless environments—no dropped signals, no distractions.
PHANTOM POWER COMPATIBILITY - Seamlessly integrates with professional audio gear for consistent, high-quality sound.
PLUG AND PLAY 12 FT XLR CABLE - Extended reach for flexible setup without compromising signal quality.
CRYSTAL CLEAR OMNIDIRECTIONAL PICKUP - Capture every word and nuance from all directions with precision.

The Shure CVB-B/O Boundary Condenser Microphone features omnidirectional pickup with advanced CommShield technology to eliminate RF interference. It includes a 12-foot XLR cable for versatile placement and requires phantom power. Designed with rugged construction and engineered plastic, it delivers superior audio clarity and reliability for professional podiums, desktops, and diverse recording environments.

Specifications

ASIN	B00A361UMS
Antenna Location	Video Conference
Audible Noise	117 Decibels
Audio Sensitivity	32.5 Decibels
Best Sellers Rank	40,604 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 596 in Condenser Microphones
Box Contents	CVB-B/O Boundary Condenser Microphone, 12 feet Cable, Omnidirectional
Brand Name	Shure
Colour	Black
Compatible Devices	Audio Interface, Audio Mixer, Game Console, Personal Computer, Notebook, Tablet, Smartphone, Camcorder
Connectivity Technology	XLR
Connector Type	XLR
Customer Reviews	4.4 4.4 out of 5 stars (186)
Enclosure Material	Engineered Plastic or Similar Synthetic Material
External Testing Certification	Não Aplicável
Frequency Response	1 KHz
Global Trade Identification Number	00042406243575
Hardware Platform	Smartphone
Impedance	150 Ohms
Item Dimensions	6.4 x 16.5 x 10.2 centimetres
Item Weight	344 g
Manufacturer	Shure
Manufacturer Part Number	CVB-B/O
Microphone Form Factor	Boundary
Model Name	CVB-B/O
Model Number	CVB-B/O
Number of Batteries	1 Lithium Ion batteries required.
Number of Channels	1
Number of Items	1
Number of Packs	1
Polar Pattern	Omnidirectional
Power Source	PHANTOM POWER: All condenser microphones require phantom power to operate. Please refer to the User Manual for more details on power requirements.
Signal-to-Noise Ratio	117 dB
Special Feature	Portable
UPC	042406243575

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