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Niles VCS100K

Stereo volume control with impedance magnification

14 Reviews | 5 questions - 6 answers

Item # 190VCS100K

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Our take on the Niles VCS100K

Niles volume controls deliver sound to your speakers without getting in the way of the music. While lesser components add pops, clicks and static, Niles brings you pure enjoyment. Their premium-quality parts and construction ensure high-fidelity sound with amplifiers rated at up to 100 watts per channel of continuous power.

Hear the music, not the volume controller

Niles volume controls deliver sound to your speakers without getting in the way of the music. While lesser components add pops, clicks and static, Niles brings you pure enjoyment. Their premium-quality parts and construction ensure high-fidelity sound with amplifiers rated at up to 100 watts per channel of continuous power.

Great for systems large or small

These in-wall stereo volume controls offer intuitive operation for your multi-room audio system. The high-power, impedance-magnifying design lets you safely connect as many as eight controls and eight pairs of speakers to a typical receiver or amplifier without installing a speaker selector or any other type of protection device.

If your amp's minimum impedance is 8 ohms, you can connect up to 8 pairs of 8-ohm speakers using these volume controls. If your amp's minimum impedance is 4 ohms, you can connect up to 16 pairs of 8 ohms speakers, or 8 pairs of 4 ohm speakers.

Product Highlights:

  • connect up to 8 pairs of 8-ohm speakers to a single stereo amplifier (requires 1 volume control per speaker pair)
  • recommended for use with Niles speaker connecting block
  • adjustable impedance magnification (2x, 4x, and 8x)
  • power handling: 100 watts per channel
  • 12 step control, 48dB maximum attenuation
  • pop-free switching between all steps
  • removable screwless connectors accommodate up to 16-gauge wire
  • Decora-style wall plate and snap-on color insert for quick and easy color changes
    • includes: white, light almond, bone and black wall plates
  • fits most 18-cubic-inch single-gang junction boxes at least 3" deep
  • 2-3/4"W x 4-1/2"H (includes faceplate); depth behind plate: 2-9/16"
  • UL-rated for safe in-wall installation
  • warranty: 10 years
  • Our 60-day money-back guarantee

Seems well constructed and installation is straightforward enough. Nice that is with a number of face plates.

Matt, San Francisco, CA

What's in the Box:

  • VCS100K rotary volume control
  • 4 Decora wallplates (white/light almond/bone/black)
  • 4 Decora inserts (white/light almond/bone/black)
  • 4 Knobs (white/light almond/bone/black)
  • 2 Mounting screws (Length=1")
  • 2 Faceplate screws (Length=3/16")
  • Installation & Operation Guide
  • Limited Warranty Card

Niles VCS100K Reviews

Average Customer Review(s):

(14 Reviews)

Nice well

Matt from San Francisco, CA on 8/27/2017

Crutchfield Customer Review (What's this?)

Seems well constructed and installation is straightforward enough. Nice that is with a number of face plates.

Pros: Easy set up...well built

Cons: None

Niles VCS100K

Anonymous from Gilroy, CA on 8/14/2017

Crutchfield Customer Review (What's this?)

Great Product



Niles VCS100K

Anonymous from Maria Stein, Oh on 7/31/2017

Crutchfield Customer Review (What's this?)

excellent, easy to hook up and come with 3 different color face plates



Great product

Ron from Center Point, IA on 7/13/2017

Crutchfield Customer Review (What's this?)

Work as expected. Well constructed and consistent quality.



Multi-Room Must Have!

Sean from Oregon on 6/30/2017

Crutchfield Customer Review (What's this?)

At first I was concerned it would have some distortion or wouldn't keep my outdoor in-ceiling speakers as loud as I wanted. But after instal (which is very simple) they sound great through this volume control!

Pros: Convieniant Easy instal Multiple color options Sleek design

Cons: None.

Great "Detent" Type Volume Control

Anonymous from Nokomis, FL on 4/9/2017

Crutchfield Customer Review (What's this?)

I used this switch on the interior side of the wall to control a pair of Polk RC80i speakers installed in an exterior Lanai is Southern Florida. The switch works great, and I can tell no distortion in the sound. The only "thing" I experienced is, the music source needs to be set at its Highest volumn to get a high volume out of the speakers. I made sure the switch's adjustable ohm setting matched the speakers (8 ohm), but it still might be due to something I did during installation! It really isn't that big if a deal though due to my receiver/speaker set-up. Was just a little surprising, that's all! The switch fits perfectly in either an "old-work" drywall ring or box, as long as the wall is thick enough. Mine went into a cut CMU block wall, but 2 x 4 framed wall should be deep enough! It also comes with a variety of different color wall plates and control knobs! One thing to maybe note is note that the switch is a Rotary "Detent" type switch, meaning it's various volume settings are "pre-set" by Eleven specific click positions (12 positions of you include "off"). That might be important to some folks.

Pros: Easy Install, Adjustable Impedance matching switch.

Cons: Not really a con, but this switch has eleven pre-set volume positions, which might not be sensitive enough depending on the usage of the control!

Niles VCS100K

John W. from Denver, CO on 3/23/2017

Crutchfield Customer Review (What's this?)

Great, easy to use and easy to install. Comes with multiple wall plates to match your existing plates or paint.



Niles VCS100K

Anonymous from West Richland, WA on 11/13/2016

Crutchfield Customer Review (What's this?)

Just at advertised. Easy install.



Volume control

Todd from River falls wi on 12/28/2014

Crutchfield Customer Review (What's this?)

Perfect came with four color options



Below Average at Best

swell36 from Denver, CO on 11/6/2014

Crutchfield Customer Review (What's this?)

The potentiometer in this device must be a $2.00 part. Stay with me and I'll explain. SETUP: I'm driving 4 pairs of in wall speakers rated at +/- 100 watts each with a Mark Levinson 27.5 amp through an ADCOM six speaker switch box. Each pair of speakers has a stereo Hi Fidelity Motronics volume control at the speaker locations. My sources include a tuner, CD player and MacBook Pro iTunes with Apple Lossless files I recorded. PROBLEM: This Niles volume control has almost no volume or volume control between the 7 and 12 o'clock position. The 6 o'clock position is off. (yes, I've tried all the impedance positions) That means you cannot listen at lower db volumes with any discernible Hi Fi information because there is nothing to hear. By the way my Hi Fidelity Motronics volume control devices resolve excellent Hi Fi sound from the 7 o'clock position around to the 5 o'clock max. CONCLUSION: If you intend to use this device in a location where you will be playing the music above the 12 o'clock position it will do the job but don't expect Hi Fi sound quality and if you want to play your music at high db levels look elsewhere. This is a seriously poor product considering the price point. Good Luck.

Pros: It installed easily and looks nice.

Cons: It doesn't work at low to medium low volumes.

well made at a fair price

js from wilmington nc on 8/31/2014

Crutchfield Customer Review (What's this?)

perfect for the job



Niles VCS100K

Todd from Peachtree City, GA on 5/2/2014

Crutchfield Customer Review (What's this?)

What an improvement over the builder grade contollers I replaced. Night and Day. So glad I spent the extra dollrs on these.

Pros: Incredibly easy installation.

Cons: None


Trickyt from Cypress, TX on 3/5/2014

Crutchfield Customer Review (What's this?)

Works great



Niles VCS100i

ray from North Potomac, MD on 5/17/2013

Crutchfield Customer Review (What's this?)

Purchase, delivery and functionality all were and are excellent. Never have used any other in-wall volume control system, so I have not comparison to make. Having the ability to impedance match seems like a good idea, but I have no experience with not doing so, therefore cannot comment.




Hands-on research

Product Research

Installation Considerations


Overview: The VCS100K (FG01652) is a high power stereo speaker volume control that connects between the speaker-level output of an amplifier, speaker selector, or a Niles distribution hub and a pair of speakers. Premium-quality parts and construction ensure high-fidelity sound with flat frequency response and 100 watts continuous power handling. It is designed for indoor use only.

Four Colors: The VCS100K installs in-wall in a standard single-gang junction box (J-box). The package includes a Decora faceplate, insert, and knob in each of four colors: white, light almond, bone, and black.

Selectable Impedance Magnifying Circuit: A universal impedance magnifying circuit enables the VCS100K to act as both stereo and an impedance magnifying volume control. You can magnify the speakers' impedance by a factor of two, four, or eight, allowing you to connect up to eight pair of speakers to a single amplifier or receiver. A sliding switch on the front on the volume control lets you set the impedance factor to 1x, 2x, 4x, or 8x.

12-Step Control: The rotary design gives 12-step control, and a total of more than 48dB maximum attenuation. The high-quality construction assures you get pop-free switching between all steps.

Autoformers: Precision autoformers provide superior sonic performance, exceeding the audio quality of non-impedance magnifying volume controls.

Removable Screwless Speaker Connectors: Two piece, screwless speaker connectors make installation quick and secure. Each connector can accept up to 16-gauge wire.

Isolated Grounds: Isolated left and right-channel grounds ensure safety with any amplifier.

Mounting: The VCS100K fits into most 18 cubic inch single-gang junction boxes.

Impedance Compatibility: The VCS100K can be used with 4-, 6-, or 8-ohm speaker systems.

Removable Insert and Knob: The Decora-style insert and knob on the VCS100K are removable, allowing you to substitute a different color insert and knob.

Installation Considerations

Junction Boxes: The mounting depth of the VCS100K is 2-9/16". When installed, the unit extends 2-1/16" behind the sheetrock (assuming 1/2" sheetrock). For installation, you must use a standard 18 cubic inch or larger junction box.

Speaker Wire: The VCS100K will accept stranded copper wire up to 16-gauge. Larger (lower gauge) wire is not recommended, as it will not fit into the connectors. Solid-core, aluminum, or "Romex" wire is not recommended. Most states require in-wall speaker wire to have a specific "CL" fire rating.

Mounting Location: You can install the VCS100K in just about any location where in-wall space exists, though it should not be installed into a junction box with 110 volt devices, such as light switches or dimmers. Speaker wire can act as an antenna for electrical noise, and locating speaker wire too close to a light switch or dimmer may cause the speakers to emit a popping or buzzing sound.

Required Tools: To install the VCS100K you will need a 1/8" standard slotted screwdriver, a 1/4" standard slotted screwdriver, and a wire stripper. Other tools may be required to prepare the wall and junction box to accept the volume control.


Audio Power Handling: 100 watts/channel RMS; 200 watts/channel peak music power

Frequency Response: 20 to 20,000 Hz (+/-2 dB)

Impedance: compatible with 4-, 6-, and 8-ohm speaker systems


  • Volume Control: W=1.532", H=4.066", D=3.421"
  • Cover Plate: W=2.95", H=4.711", D=0.255" (Cutout: 1.314" x 2.637")

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?

Consultant recommended that this would allow second area in room to be controlled. [ Mark  Oct 10, 2017 ]
I have had good success with these controls in previous installations. [ Joel De  Oct 03, 2017 ]
Have Two of these with existing system [ Robert  Sep 11, 2017 ]
Minimalist look, brand reputation for quality. [ Alap  Aug 03, 2017 ]
Crutchfield helped diagnose my shorting problem with my outdoor speakers over the phone (amazing help as always). They suggested these and I went with them. Easy to install btw- the unit has removable wiring boards that make getting the wires in place a snap. [ GREGORY  Jul 30, 2017 ]
Sonny sold me on it. [ Patrick  Jul 20, 2017 ]
salesperson's recommendation [ JANET  Jul 09, 2017 ]
Replacement of bad controller [ Mark  Jul 08, 2017 ]
I have others and they work great! [ Chad  Jun 07, 2017 ]
Replacing the same thing, its on a boat and has lasted about 8yrs, time for a new one. [ Chris  Jun 05, 2017 ]
Reviews of other customers and similarity with the one in place today. [ Javier  Jun 05, 2017 ]
My Sound man recommended I get this [ Scott  May 07, 2017 ]
Have utilized Niles products in past. Quality. [ Matthew  Apr 11, 2017 ]
Ease of installation, my fingers were numb after installing another brand with the screw-in terminals. [ Kimberly  Mar 29, 2017 ]
My prefer choice for a quality volume control. [ bill  Mar 08, 2017 ]
to controll part of 2nd zone [ Motaz MO  Jan 24, 2017 ]
Need to control speakers in dining room driven by receiver in another room [ David  Dec 20, 2016 ]
Recommended by your tech support to solve my problem. [ Dennis  Dec 05, 2016 ]
I needed a volume control that could handle 100k output to 4 sets of stereo speakers and not blow my receiver up. This fit the bill. [ John  Nov 30, 2016 ]
I have had success with using this in-wall speaker volume control previously therefore I chose it again. [ JOHN R  Sep 26, 2016 ]
Got to have your volume controls when you have multi room audio in the room. Needed product to do so. [ JAMES  Sep 16, 2016 ]
Needed for a job to match existing switches [ Eric  Jan 04, 2016 ]
Ringo recommendation [ Frank  Dec 11, 2015 ]

5 questions already asked

Yes. I am assuming you mean four speakers and not four speaker pairs. However the manual says this unit has capacity for eight speaker pairs. I only installed one pair of outdoor Klipsch speakers and the unit works great. [ Steven  Dec 01, 2016 ]
I'm running four 8-ohm speakers to this same volume control. The connectors inside the volume control aren't really wide enough to accept two pairs of speaker wire to be connected directly to the volume control. Instead, you will need to connect one pair directly to this volume control unit, then connect the second pair of speakers in parallel to the first pair. Then follow the instructions for the correct switch setting for the total number of pairs of speakers you are running from your amp. If these are the only 4 speakers, then you will set the switch for two 8-ohm pairs. If you have other volume controls and speakers for the same amp, you will need to take those into consideration when setting the impedance matching switch. [ Luke  Dec 01, 2016 ]
Yes just connect to one of the terminals. As long as signal is mono coming in. [ DIRK  Nov 17, 2015 ]
The 100W rating is for the speakers connected to the load side of the control: I.E.- the speakers in that room or area. I had about 8 "areas" and 8 switches all driven by a 1,000 watt (RMS) amp...just make sure you match the impedance to the amp or it'll overload it (The chart is Customer Support at Crutchfield, they'll help you keep it straight). [ DAN  Jun 07, 2015 ]
Thanks for your question. For information on comparing two or more models I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences and help you make the best choice for your system and your budget. [ Krissy  Nov 26, 2014 ]  Staff