Can this device simultaneously play audio from two different inputs or does it only switch in between the two audio inputs?

It only switches between the two audio inputs. It cannot mix or play two inputs together. I use it in reverse, with the audio from my computer connected to the OUT jack, with computer speakers connected to A, and headphones connected to B. Works great!

Can I turn off switch and hear or overlap all three input devices (computers) at the same time?

There is no off position on the knob, you can only switch between the 4 inputs, just one at a time, you cannot overlap or channel more than one at a time. This is a very solid high quality audio switch, I use it for my turntables setup.

Does this support 4 pole? Specifically can a headset with a mic be plugged in to an output and transmit to an input computer?

I am fairly but not absolutely certain the answer is no. I don't particularly want to disassemble mine to check for sure but it's open construction gives some visibility into how many solder connections there are to the input and output jacks. Between that and what people say about it comments, and the product description -- pretty sure, no. That could be a nice product, though.

Can this be used for a phono signal (not line)?

If the phono signal is already at line level (amplified though a preamp with the required R.I.A.A. curve, the answer is yes. Otherwise, no.

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

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3 in 1 Out RCA Stereo Audio Source switcher Switch Signal selector Splitter schalter Connector Distributor Box

Product ID: 217413662

Details

Brand
SOLUPEAK
Cable Type
RCA
Color
3 ports RCA IN
Compatible Devices
DVD Player
Connector Type
RCA

⚡Passive design, no power needed

🔄3-in-1 input & 1-in-3 output versatility

🔇Instant mute function for zero output

C$2543

Duties & taxes included

In stock

Sold byAmazon NicaraguaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎧 Switch smarter, not harder—your audio command center awaits!

MUTE ON DEMAND - Hit the red button to instantly silence your setup—perfect for quick breaks or private moments.
COMPACT LIGHTWEIGHT - Sleek 115x65x45mm design weighing only 100g fits perfectly in any modern workspace or entertainment hub.
PLUG PLAY SIMPLICITY - No power supply or complicated setup required—just connect and control your audio sources in seconds.
UNIVERSAL RCA COMPATIBILITY - Works flawlessly with DVD players, TVs, amplifiers, and more—streamline your entire audio ecosystem.
SEAMLESS MULTI SOURCE SWITCHING - Effortlessly toggle between 3 audio inputs or distribute 1 input to 3 outputs with a smooth rotary switch.

The SOLUPEAK 3-in-1 RCA Audio Source Switcher is a compact, passive signal selector that allows users to easily switch between three audio inputs or distribute one input to three outputs without any power supply. Featuring a smooth rotary switch and an instant mute button, it supports a variety of RCA-compatible devices like DVD players, TVs, and amplifiers, making it an essential tool for managing multiple audio sources with professional ease.

Specifications

ASIN	B085Y96LHZ
Best Sellers Rank	#374 in Audio & Video Selector Boxes
Brand	SOLUPEAK
Cable Type	RCA
Color	3 ports RCA switch(3 IN 1 OUT)
Compatible Devices	DVD Player, Television
Connector Type Used on Cable	RCA
Customer Reviews	4.1 4.1 out of 5 stars (1,004)
Item Dimensions D x W x H	2.36"D x 4.25"W x 1.77"H
Item Weight	0.1 Kilograms
Manufacturer	Zhuogang
Model Number	AS31
Number of Ports	3
UPC	659438712261

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