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Russound SDB-4.1

High-power 4-pair speaker selector with volume control

7 Reviews

Item # 543SDB4VC

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Our take on the Russound SDB-4.1

Here's a convenient way to distribute signals to four pairs of speakers from one location. The Russound SDB-4.1 lets you independently select and adjust the volume for each set of speakers — a necessity for most multi-room systems. This versatile design also allows you to switch between two source amplifiers or receivers. The impedance can be customized to match your specific combination of speakers and sources.

Product Highlights:

  • play up to 4 pairs of speakers simultaneously
  • allows switching between two source amplifiers or receivers
  • autoformers ensure efficient impedance matching
  • each zone features independent volume, power, and source controls
  • power handling: 200 watts per channel RMS
  • accepts up to 14-gauge speaker wire
  • includes room/speaker labels
  • 17"W x 3-5/16"H x 7-1/2"D
  • warranty: 10 years
  • Our 60-day money-back guarantee

The wiring in the back has a tendency to pull out causing a disconnection by zone

Anonymous, Gainesville, GA

What's in the Box:

  • SDB-4.1 speaker selector for four pairs of speakers
  • Sheet of self-adhesive room labels
  • Installation Manual

Russound SDB-4.1 Reviews

Average Customer Review(s):

(7 Reviews)

Russound SDB-4.1

Anonymous from Gainesville, GA on 9/3/2017

Crutchfield Customer Review (What's this?)

The wiring in the back has a tendency to pull out causing a disconnection by zone



Works great, but spendy

Bill from Spokane, WA on 6/30/2017

Crutchfield Customer Review (What's this?)

Expensive. Needed it for receiver power. Works as advertised.

Pros: Works perfect

Cons: So spensive

Russound SDB-4.1

Anonymous from Shawnee, KS on 5/10/2017

Crutchfield Customer Review (What's this?)

This transfer box is the perfect thing. At least for what I wanted to do. I had two different systems that I wanted to switch between my speakers. Each unit is 150 watts so I felt this unit would handle things perfectly and it has.




BJano from Topeka, KS on 5/4/2016

Crutchfield Customer Review (What's this?)

This is an awesome product if you are wanting to change the level of volume going to certain areas. You can adjust the volumes very quickly and change quickly if needed. It was easy to hook up and is very elegant looking as well.

Pros: Easy to hook up, easy to adjust speaker volume.

Cons: None

Russound SDB-4.1

James from Branford, Ct on 5/2/2016

Crutchfield Customer Review (What's this?)

This replaces a Rossound four speaker selector which was working just fine. The volume trimming feature of this new unit is nice and having the option to use the other amp and music source adds versatility. Solid product.




Allan from shelton,ct on 3/3/2016

Crutchfield Customer Review (What's this?)

The instructions need a better explanation and also the description needs to state how much power the input amp needs to power the system

Pros: Multi room use very powerful

Cons: Very powerful caused lower output amps to shutdown

Great Product

dav3nator from Coopersburg, PA on 9/17/2010

Crutchfield Customer Review (What's this?)

I had purchased a cheaper product like this one and it just did not meet my needs. I had to have individual volume control. It makes world of difference being able to control each room, especially my outdoor speakers which where never loud enough even though my other rooms would be deafening. My only complaint is the incremental volume control. I don't understand why Russound would make it this way, but I have gotten used to it. It's well built and looks nice. My old box was an eyesore. I don't use two receivers yet, but plan to. This would eliminate the arguing over which radio station we should listen to. Installation is easy. I would defiantly recommend this product to friends.




Hands-on research

Product Research



Overview: The Russound SDB Dual Source Speaker Selector is a high-power, dual-source, autoformer-based speaker selector with individual volume controls for 4 rooms or areas. Dual-source operation allows you to choose either one or two different amplifiers or receivers to power selected speakers independently. Each room has its own input selector (A-B), volume control, and on/off switch, located on the front of the unit. The unit works with all speakers rated from 4-8 ohms and amplifiers rated for 4-8 ohms.

Controls: The SDB-4.1 has the following front panel controls:

  • Volume Control: four rotary volume controls, each with a 12-step adjustment.
  • On/Off Switch: four 2-position push button switches (Out=Off, In=On)
  • Amplifier Selector: four 2-position push button switches (Out=Amp A, In=Amp B)

Removable Speaker Terminals: There are four removable 4-pole speaker output terminal blocks and two removable 4-pole speaker input terminal blocks, each of which can accept up to 14-gauge wire. The terminals can support multiple speaker pairs wired in parallel or series, provided their combined impedance is a minimum of 4 ohms. A small slotted screwdriver is required for attaching the terminals to your speaker wires.

Impedance Setting: The impedance of the autoformers is set at the factory at 4x. A chart in the Installation Manual can help you determine the proper impedance setting for the number and impedance of your speakers. If certain applications require changing the impedance setting, the cover can be removed to access the jumpers inside.

Labels: There are 52 pre-printed and 8 blank label stickers included for easy identification of the front panel controls.



  • Power Handling:
    • 200 watts per channel RMS continuous
    • 400 watts per channel average
    • 600 watts per channel peak
  • Volume Control: 42 dB attenuation, 12 positions
  • Impedance Matching: Russound Ultra-Match Autoformers
  • Weight: 9 pounds

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

I need it to hook up all my speakers in deferent rooms. [ DAVID  Jul 25, 2017 ]
replacement of existing product [ JUAN JOSE  Jun 22, 2017 ]
Great product for my application [ Michael  Aug 28, 2016 ]
Purchased a home with Russound speakers installed in 4 rooms. The amplifier/selector was sold by previous owner. Needed to hook up speakers to amplifiers/receivers in my media room. [ J  Apr 19, 2016 ]

Looking for more? Check out the next model in this lineup.

Russound SDB6 6 Pair Speaker Selector

Controls six pairs of speakers

The Russound SDB-6.1 offers these features:

11-step impedance matching volume control for six pairs of speakers

switch between two powered sources, like an amplifier and receiver

handles 150 watts per channel