RCA splitter

Balanced splitter, gives you locking connectors, and you choose your lengths for positioning.

https://emotiva.com/products/xbal-1x2?utm_source=google&utm_medium=cpc&utm_campaign=20042245837&utm_content=656394514266&utm_keyword=&gclid=Cj0KCQjwldKmBhCCARIsAP-0rfzAVygLkxXOubiyMyRdSxJH_tWDWfjeHkAq3ELkWv88fJgsd0va648aArnpEALw_wcB

Your chosen splitter, consider supporting the weight of the two cables to minimize downward force on the male end into the units female jack.

you can make your own to use locking connector to hold the weight and avoid possible poor connection

https://www.amazon.com/Parts-Express-Locking-Connector-Solder/dp/B0002KR26I

@santani 

Exactly what are you trying to do? Normally, when you are "biamping" you connect the outputs of your preamp to an active crossover which splits the signal in two at the selected frequency leading to two 2 channel outputs, hi and low frequency.

mijostyn - simple answer is to see if it makes a difference to my enjoyment of music. My speakers have powered woofer cabinets allowing for separating the bass loading from mid/tweeter loading on the 2 watt SET amp powering them. For anyone wanting a comprehensive write up on bi-amping see https://stereo-magazine.com/review/everything-you-need-to-know-about-bi-amping-review

I’ve recently used Audioquest splitters on a Benz Lukasheck PP-1 phono stage to add loading resistor plugs (otherwise its loading is fixed at 22K). This is not in my "best" system, but still very good. In fact I currently have a $4K WEL Signature LP cable hooked into these spitters (lol). I notice NO loss of sound quality from the splitters.

However, physical contact connections in the audio chain can be very tricky. If you have a single bad contact, it can very easily cause problems like (say) L/R channel imbalances. I’ve had headshells that have driven me literally CRAZY with this (answer: remove any rubber damping ring on the bayonet mount so the lead pins make better contact, then always tighten FULLY). Your need to periodically check and cleaning all contact connections. If and when you notice a channel imbalance, you need to go looking.

The Audioquest RCA splitters make a "death" grip on jack and plugs. The fit is VERY tight. Abnormally tight. Normally this ensures a good contact connection BUT if your equipment has those cheap PCB-mounted RCA jacks, it’s possible this tight action could crack and compromise things! Even chassis-mounted RCA jacks can become loose over time.

mulveling

"However, physical contact connections in the audio chain can be very tricky. If you have a single bad contact, it can very easily cause problems like (say) L/R channel imbalances."

so true. the basis of my comments to OP

1. I changed all my RCA cables to Locking RCA jacks

2. If Balanced option available, even for short residential use (normally balanced not needed unless long runs), I use the balanced because they are locking connectors

3. my vintage McIntosh mx100z had slightly small diameter, and corroded rca jacks, Audio Classics replaced all the RCA Jacks with new gold plated ones, hooray!