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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ST42 4-Way RCA Audio Switch Source Signal Input switcher selector Splitter Box (4 in 2 Out)

ST42 4-Way RCA Audio Switch Source Signal Input switcher selector Splitter Box (4 in 2 Out)

Product ID: 393965516

Details

Brand
SOLUPEAK
Cable type
RCA
Colour
Black
Compatible devices
DVD Player PC
Connector type
RCA

🔄4-way input switch

🔗Gold-plated connectors

🎛️Precision rotary knobs

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₩227057

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In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎧 Elevate your audio game—switch smarter, sound better!

DUAL AMPLIFIER OUTPUT - Simultaneously manage 2 amplifiers for versatile audio setups
PREMIUM BUILD QUALITY - Durable aluminum chassis and solid knob for a sleek, professional look
PLUG PLAY SIMPLICITY - No power needed—just connect and control your audio sources instantly
LOSSLESS AUDIO INTEGRITY - Passive design ensures zero signal degradation for pristine sound
SEAMLESS 4 SOURCE SWITCHING - Effortlessly toggle between 4 stereo inputs without unplugging cables

The SOLUPEAK ST42 is a compact, passive 4-way RCA audio switcher that allows seamless selection between four stereo sources and outputs to two amplifiers. Featuring a durable aluminum chassis, precision rotary knobs, and gold-plated connectors, it guarantees lossless audio quality without the hassle of unplugging cables. Ideal for professionals seeking clean, efficient audio management in a sleek, plug-and-play design.

Specifications

ASIN	B094W84SR5
Best Sellers Rank	#107,130 in Electronics ( See Top 100 in Electronics ) #283 in Audio & Video Selector Boxes
Brand	SOLUPEAK
Cable Type	RCA
Cable type	RCA
Color	Black
Colour	Black
Compatible Devices	DVD Player, PC, Television
Compatible devices	DVD Player, PC, Television
Connector Type Used on Cable	RCA
Connector type	RCA
Customer Reviews	4.4 out of 5 stars 149 Reviews
Item Dimensions D x W x H	15.2D x 10.2W x 5.1H centimeters
Item Weight	500 Grams
Manufacturer	Zhuogang
Mfr Part Number	ST42
Model Number	ST42
Number of Ports	4
Number of ports	4
UPC	710702291452 710702291469

Reviews

V**E

Selecteur de sources

Une voie sur le sélecteur ne fonctionne pas surement un problème de câblage ou de soudure mal faite

11.08.2022

J**K

問題なし

スイッチがスピーカー回路に入って音質が劣化することは無いようだ．スイッチの質感もよい．

25.09.2025

O**I

Ottimo!

1.09.2025

L**I

Great product!

9.02.2026

J**E

Brilliant, simple solution

6.04.2022

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