Will the 2 "out" lines work for "TV headphones" and regular speakers (with no amplification in between)?

You do need an amplifier, unless your speakers and headphones are amplified already.

Does this device allow one to connect, say, 2 different CD players to the amp and switch indifferently between the two, one signal at a time?

Yes. If you read the other questions, the connection is explained. Any 4 RCA sources to one Amp or reversed such as single CD player to 4 different amps.

What is the maximum recommended cable length for the output, since it is passive?

That’s hard to tell. Depends on your cable and your tolerance of signal degradation.

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S1 4 Way RCA Audio Switch Stereo Switcher Selector Box | 4 IN 1 OUT you quickly sw between 4 audio sources in, avoiding frequent cable changes，Bi-Direction passive no need power

S1 4 Way RCA Audio Switch Stereo Switcher Selector Box | 4 IN 1 OUT you quickly sw between 4 audio sources in, avoiding frequent cable changes，Bi-Direction passive no need power

Product ID: 210394514

Details

Brand
SOLUPEAK
Cable Type
RCA
Color
4-WAY RCA IN 1
Compatible Devices
Compact Disc
Connector Type
RCA

🔄4 inputs, 1 output seamless switch

🔋Passive design, no power needed

🛡️Durable aluminum shell & knob

€ 96.02

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Description

🎧 Elevate your audio game—switch smarter, not harder!

PLUG PLAY PASSIVE POWER - No batteries or adapters—just connect and control your audio effortlessly with zero power consumption.
COMPACT SPACE SAVVY DESIGN - At just 110x130x50mm and 650g, it fits perfectly in any modern workspace or entertainment setup.
AUDIOPHILE GRADE BUILD QUALITY - Solid aluminum chassis and CNC-machined knob deliver durability and a sleek, professional aesthetic.
EFFORTLESS 4 IN 1 AUDIO SWITCHING - Seamlessly toggle between four stereo sources with a smooth rotary knob—ditch cable swaps forever.
TRUE LOSSLESS SIGNAL TRANSMISSION - Upgraded immersion gold PCB and gold-plated RCA connectors ensure pristine, unaltered audio quality.

The SOLUPEAK S1 4-Way RCA Audio Switch is a premium passive stereo selector box that lets you effortlessly switch between four audio sources using a high-quality rotary knob. Featuring an upgraded gold-plated PCB and RCA connectors, it guarantees lossless signal transmission without the need for external power. Built with a durable aluminum shell and compact dimensions, it’s the perfect space-efficient solution for professional-grade audio management in multi-room or multi-device setups.

Specifications

ASIN	B085W1PPHL
Audio Output Mode	Stereo
Best Sellers Rank	#71 in Audio & Video Selector Boxes
Brand	SOLUPEAK
Cable Type	RCA
Color	4-WAY RCA Switch(4 IN 1 OUT)-Upgrade version
Compatible Devices	Compact Disc (CD) Player, DVD Player, Laptop
Connector Type Used on Cable	RCA
Customer Reviews	4.3 4.3 out of 5 stars (240)
Item Dimensions D x W x H	5.12"D x 4.33"W x 1.97"H
Item Weight	620 g
Manufacturer	Zhuogang
Mfr Part Number	S1
Model Number	S1
Number of Items	1
Number of Ports	4
UPC	659438712254

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€ 96.02

Duties & taxes included

In stock

Sold byAmazon IrelandDelivered 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 Ireland.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

View all Trustpilot reviews