In xlr input - rca output setup, does it invert and sum up negative with positive signal(removing noise), and then only pass to rca?

Using XLR at both ends gives a better sound, if using XLR at one end and the other end is RCA, the sound output will slightly lower down and need to increase the volume and there will be no sound distortion.

When output "A" is selected, are outputs "B" and "C" left floating or are they grounded, etc?

Well this is a 3 IN 1 OUT switch. So only one out. As for the other inputs being grounded when not selected, I can’t answer that, but there is no noise from other inputs.

Balanced inputs without balanced internals? one customer review claims as much, which defeats the purpose of using xlr cables. is this true?

Hello. It is balanced in and out. This device won't change any characteristics. It is only a passive converter.

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DoukAudio XLR Audio Switcher 3-In-1-Out: Balanced Passive Selector Stereo Converter for Multi Source Comparison Gold Plated Shielded Aluminum Studio HiFi Audiophile

Product ID: 151663618

Details

Brand
Nobsound
Cable Type
XLR
Color
Black
Compatible Devices
Audio Mixer
Connector Type
XLR

⚡Passive design, no power needed

🔀3-in-1 XLR input switch

🛡️Gold-plated connectors & shielded aluminum

$147.45

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Description

🎧 Elevate your audio game—switch like a pro, hear the difference!

STUDIO HI FI READY - Perfect for DACs, mixers, and streamers—engineered for discerning pros and serious audiophiles alike.
AUDIOPHILE GRADE BUILD - Gold-plated XLR connectors ensure stable, low-loss connections for pristine audio fidelity.
PURE PASSIVE AUDIO PATH - Zero power required—preserves your original sound with transparent, uncolored signal transmission.
SEAMLESS SOURCE SWITCHING - Effortlessly toggle between 3 balanced XLR audio sources for ultimate system flexibility.
INTERFERENCE FREE LISTENING - Shielded aluminum housing blocks noise, delivering crystal-clear, professional-grade sound.

The DoukAudio XLR Audio Switcher is a premium 3-in-1-out balanced passive selector designed for professional and audiophile use. Featuring gold-plated XLR connectors and a shielded aluminum chassis, it enables seamless switching between multiple balanced stereo sources without any power supply, preserving pure, interference-free sound quality in studio and HiFi environments.

Specifications

ASIN	B07QVKPR2V
Audio Output Mode	Stereo
Best Sellers Rank	#137 in Audio & Video Selector Boxes
Brand	Nobsound
Cable Type	XLR
Color	Black
Compatible Devices	Audio Amplifier, Mixer, Player
Connector Type Used on Cable	XLR
Customer Reviews	4.7 4.7 out of 5 stars (296)
Item Dimensions D x W x H	4.13"D x 5.83"W x 2.72"H
Item Weight	1 pounds
Manufacturer	Nobsound
Mfr Part Number	GFJ721
Model Number	GFJ721
Number of Items	1
Number of Packs	1
Number of Ports	4
Power Source	Passive
Unit Count	1 Count
Warranty Description	18-Month Limited Warranty

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$147.45

Duties & taxes included

In stock

Sold byAmazon British Virgin IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to British Virgin Islands.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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