Skip Navigation

AudioSource AMP100VS

Stereo dual-source power amplifier

79 Reviews | 18 questions - 26 answers


Our take on the AudioSource AMP100VS

The AudioSource AMP100VS stereo power amp makes a great choice for powering speakers in your multi-room sound system. Its low-distortion, high-current design really packs a punch for getting the most out of your music. This versatile amp's dual line-level inputs let you enjoy sound from one main music source plus an additional "local" audio source, switching automatically between the two.

High-quality power for multi-room audio

The AudioSource AMP100VS stereo power amp makes a great choice for powering speakers in your multi-room sound system. Its low-distortion, high-current design really packs a punch for getting the most out of your music. This versatile amp's dual line-level inputs let you enjoy sound from one main music source plus an additional "local" audio source, switching automatically between the two.

Say you have a network audio player, such as a Sonos CONNECT as your primary source feeding the AMP100VS's main input. Any time you fire up the Sonos player, your AMP100VS turns itself on and sends the music to your speakers. Then, if you connect another music source like a CD player or portable music player to the secondary local "Interrupt" input, the amp will switch to that source whenever it senses an incoming music signal. When a CD stops playing, the amplifier will automatically switch back to the Sonos. There's no need to manually switch inputs.

Bridged mono mode for more power

The AMP100VS can power one or two pairs of speakers. Use it in stereo mode, or add a second amp and bridge them for a more powerful dual-mono setup. This amp's low-profile design makes it easy to place in a room where space is tight.

With loop output and 12-volt trigger input and output, the AMP100VS provides the power and flexibility to support a wide range of multi-room system configurations.

Product Highlights:

  • 50 watts x 2 into 8 ohms or 60 watts into 4 ohms
  • 150 watts when bridged into a single 8-ohm load
  • high-current Class AB amplifier design
  • front-panel volume and balance controls
  • A/B speaker switching
  • rear-panel bass and treble controls (± 12dB @ 100 Hz and 10,000 Hz)
  • main and secondary ("Interrupt") audio line inputs with automatic source switching
  • loop output on the main line input passes that audio signal on to another amp, giving you flexibility in designing a multi-room system
  • signal sensing "Power On" and Trigger mode
  • auto on select switch allows manual or signal sensing power on/off
  • unswitched AC convenience outlet for powering a source component (400 watts max)
  • total harmonic distortion: less than 0.2%
  • frequency response: 10-30,000 Hz (+0 dB, -3 dB)
  • signal-to-noise ratio: 100 dB
  • binding post A and B speaker connectors
  • 16-1/2"W x 2-15/16"H x 9-1/2"D
  • 9.6 lbs.
  • warranty: 2 years
  • Our 60-day money-back guarantee

What's in the Box:

  • Stereo power amplifier
  • Owner's Manual

Slide Switches for trigger and bridged output were loose, required extra care and taping to hold in place.

Glenn, Victor, MT


AudioSource AMP100VS Reviews

Average Customer Review(s):

(79 Reviews)
rewards card
Great Gear Giveaway

Submit a review and enter to win a $350 rewards card

Review this product

Thanks for submitting your review

Most reviews are processed and published within 5 business days. You will receive a confirmation email once your review has been published.

Your Review

Use the stars below to rate the overall product on a scale of 1-5
Upload your photos

Not visible. Email associated with order.
(e.g., Charlottesville, VA)

Additional Fields (optional)


By submitting this review, you agree to our terms and review guidelines.

Filter by rating

Customer photos

<< >>

Hands-on research

Product Research


AudioSource Amp Series: AudioSource AMP series amplifiers are designed for home and commercial audio distribution systems where high quality sound, flexibility, and reliability are essential. The AMP series offers exceptional value and many features that will make their installation and use easy and convenient.

Stereo Power Amplifier: The AudioSource AMP100VS stereo power amplifier is designed for dedicated stereo & distributed audio applications. It offers A & B speaker outputs. The amplifier can be configured for Stereo or Bridged output.

  • Stereo (8-ohm): 50 watts x 2 channel, 10-30kHz, <0.2% THD+N
  • Stereo (4-ohm): 60 watts x 2 channel, 10-30kHz, <0.2% THD+N
  • Bridged Mono (8-ohm): 150 watts x 1 channel, 1kHz, <1% THD+N

Front-Panel Controls: The AudioSource AMP100VS stereo power amplifier features the following front-panel controls.

  • Power Switch: The front-panel Power Switch turns the AMP100VS on or off. A red LED indicates connection to AC power while in standby mode and turns green indicating audio signal is present.
  • Volume: The front-panel rotary volume knob allows you to adjust the amplifier's overall volume level.
  • A/B Speaker Selector: You can select Speakers A, Speakers B, or Both for playback.
  • Balance: The Balance control lets you fade the amplifier's speaker output between the Right & Left channels.

Rear-Panel Controls: The AudioSource AMP100VS offers the following rear-panel controls.

  • Bass & Treble: Bass (100Hz) & Treble (10kHz) can be adjusted from -12dB to + 12dB.
  • Stereo Mode: Select Stereo mode for connecting one or two pair of loudspeakers.
  • Bridged Mode: When set to Bridged mode, the AMP100VS becomes a single channel mono amplifier for powering one speaker. Only the Right audio input is used during bridged-mode. Only one zone (A or B) can be bridged; not both.
  • Auto On Switch: Power can be turned on and off manually via the switch on the front-panel or automatically by signal sensing. Set the Auto On switch to Normal for manual power on/off. Set the Auto switch to Auto for signal sensing; the amp will turn on when audio signal is detected at the inputs The front-panel power switch must be in the On position (pushed in) for the Auto On feature to operate.

Rear-Panel Connections: The AudioSource AMP100VS digital stereo power amplifier is equipped with the following inputs & outputs

  • Main Input/Output: The AMP100VS Main Input consists of stereo RCA jacks and are used as the amplifier's primary audio inputs. The Main Output also consists of stereo RCA jacks and passthrough the AMP100VS's Main Input audio signal to another amplifier.
  • Interrupting Line Input: The Interrupting Input consists of stereo RCA Jacks. This input can be used if a second source is desired and takes over when signal is present and has at least a 5mV level. When there is no signal, or a signal with less than 5mV level, the amp switches back to Main input after a brief delay.
  • Speaker A/B Terminals: The AudioSource AMP100VS is fitted with binding-post terminals for A & B speaker connection for powering up to two pair of speakers. The minimum impedance for each speaker section is 4-ohm in Stereo mode and 8-ohm in Bridged mode. The binding post terminals will accept bare wire (up to 10AWG), pin-connectors, and banana plugs (single or dual).
  • Trigger In/Out: The 12V trigger input and output allow the AMP100VS to be powered on by other electronics or to power on other electronics via a 3.5mm minijack cable.
  • Unswitched AC Terminal: A two-prong AC terminal provides power for an additional component, such as a CD or DVD player, turntable, or other non-amplified electronic component. Do not connect another amplifier or receiver. Ensure 400W max power consumption for any device plugged into this terminal.
  • Power Cord: The stereo power amplifier features an attached 5.5' AC power cord.

Mounting Options: The AudioSource AMP100VS stereo power amplifier features four rubber feet and can simply be placed on top of a flat surface; like a table-top, shelf, or stand.

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?

Reviews and my old amp is from the 90s and always on sucking power. Time an upgrade [ Patrick Von  Nov 03, 2018 ]
Needed a second amp to power subwoofer [ George  Oct 29, 2018 ]
I was looking for a simple amplifier to power some ceiling speakers expanding my surround sound. [ JEREMY  Aug 27, 2018 ]
advice from Nemo and Tyler [ Carl  Aug 14, 2018 ]
Power existing and new speakers [ Scott  Jun 11, 2018 ]
Easy, intuitive set up. Good power. Great price. [ Adam  Jun 10, 2018 ]
Good reviews and price along with 60 day return if I don't like it. [ Jeffrey  Jun 07, 2018 ]
Had a receiver but only listened to internet radio and music in my iTunes. Got tired of turning on/off and this amp has an auto on/off feature. When music starts it turns it's self on and then off when it stops. I have bluetooth on one input and chrome cast audio on the other. [ keith  Jun 06, 2018 ]
I have a audiosource preamp, nice quality [ Thomas  May 29, 2018 ]
Already own one. Excellent item. Need another one to drive stage monitors from board. [ Gerald  May 23, 2018 ]
matches current equipment [ The Centre at  Apr 24, 2018 ]
Brand and Crutchfield products and customer service. [ MrRalph  Apr 18, 2018 ]
Replacing old one that has become noisy with static etc. [ T  Apr 04, 2018 ]
Good reviews [ Mark  Apr 01, 2018 ]
Good value [ Lucas  Feb 20, 2018 ]
I chose this amp because I have one already, and like it, so wanted to gift this one to my son. It's a good quality amp. [ Kevin  Dec 13, 2017 ]
Recommended by friend [ Thomas  Dec 11, 2017 ]
It was recommended as a way to replace an older stereo that was the second unit in a multi-room system. [ Richard  Nov 19, 2017 ]
The audio source amp100vs has been given some great reviews. [ Thomas  Nov 19, 2017 ]
Cheap amp. [ Mark  Nov 13, 2017 ]
This is the best amplifier for a patio zone at its price point. [ Karsten  Sep 24, 2017 ]
The great reviews and the low price point [ Edward  Sep 08, 2017 ]
Recommend by Clarence [ Jeffrey  Aug 17, 2017 ]
I need a separate amp for outdoor speakers. Reviews seemed like this was the right choice - will update once I receive and put it to work. [ stephen  Jul 26, 2017 ]
instant on, multiple inputs (use with echo dot) [ william  Jul 24, 2017 ]
I needed a mono-amp to help drive my passive sub-woofer on my home stereo. This stereo amp seems to fit the bill. It gives me 150 Watts at 8 ohms while in mono mode. You shouldn't have to pay an arm and a leg for an amplifier to do a simple job. [ Nikola  Jul 17, 2017 ]
Recommended by AVForums for in ceiling Atmos system. [ Dusty  Jun 24, 2017 ]
I needed to add additional zones to an existing receiver. [ Steven  Jun 23, 2017 ]
I have 2 sets of outdoor speakers I want to power with this amp from my zone 2 output. [ GERARD  Jun 20, 2017 ]
Need more power for our outdoor speakers [ Jenna  May 30, 2017 ]
To add a little more poop to my RV system. Factory unit is weak at best, and speakers are terrible. This should make it a little more lively. [ Scott  May 21, 2017 ]
This is my third Audiosource amp. I use them to power speakers connected to my Logitech Media Server audio players (Squeezebox). Great quality and awesome price for these amps. [ Chris  May 21, 2017 ]
You have good products, that is why I selected Cruthfield [ ERIC  May 16, 2017 ]
Max and Andy your reps highly recommended and were great help! [ Daniel  May 10, 2017 ]
Price, specifications and auto shutoff and auto switching [ richard  May 08, 2017 ]
Based on other user reviews, I felt this would be my best option for getting 9.1 channels out of my yamaha 3050 receiver in bi-amp mode. [ Neal  May 01, 2017 ]
price point [ Ralph  Apr 29, 2017 ]
The product was a perfect choice for my application. I compared it with the Russound P75 and AudioSoiurce AD1002. This unit will power zone 2 from my Onkyo 8160. I liked the tone compensation (not available on P75) and auxiliary power outlet (not available on AD1002). [ vernon  Apr 28, 2017 ]
Will be used to power 8 ohm stereo ceiling speakers in another zone (master bedroom). Adding this amplifier to a 7.1 receiver was cheaper than buying the 9.1 receiver. New receiver has a 12V trigger and a Zone 2 pre-out and this amp has a 12V trigger, so they will pair nicely together. The reviews were very good for the price range. [ Matthew  Apr 21, 2017 ]
Your Crutchfield Advisor, Ozzy told me to. He said it was a great alternative to buying the Sonos Connect amp. [ Kevin  Apr 10, 2017 ]
Right price, items meet needs, quality reputation. [ ANDREW J  Feb 19, 2017 ]
I purchased the AudioSource AMP100VS to power two outdoor speakers. I am connecting it to the Zone 2 Preouts of my Denon home receiver. [ Neil  Feb 14, 2017 ]
Recommendation to meet my needs based on discussion with Lucy. [ Nestor  Jan 31, 2017 ]
price [ JOSEPH  Jan 31, 2017 ]
Seems like good value for the money. [ Robert  Jan 28, 2017 ]
Perfect choice for driving additional speakers on patio [ B  Jan 16, 2017 ]
Needed for a spare room stereo system .................... [ GEORGE H  Dec 28, 2016 ]
Features for price point [ Alan  Dec 23, 2016 ]
Great value for the money. This is the third AMP-100 I have added to a distributed , whole house audio system. [ Robert  Dec 15, 2016 ]
Crutchfield advisor helped me find a bridgeable amp, needed for a single-speaker situation. [ Mark  Dec 11, 2016 ]
Price and features. I just don't need anything bigger. This one was just right. [ Charles  Dec 04, 2016 ]
liked the price and the audio sense feature. [ David  Nov 27, 2016 ]
Seems a good match for needs in outside zones for sound system. [ Edward  Oct 28, 2016 ]
I'm gonna use this to power my two speaker instead of a soundbar because XBR65X930D is using a small speaker for regular use. For surround sound I'm using 5:1 stereo amplifier connected to my panasonic DMP-UB900 4K Blu Ray player. [ JOSELITO  Oct 13, 2016 ]
price and specs, exact power level I needed. [ Raymond  Aug 24, 2016 ]
It was exactly what I need for my Sonos connect to power the speakers in my kitchen and my outside deck. [ Mark  Aug 10, 2016 ]
It seemed to fit my needs. I/ve ordered electronics from Crutchfield in the past and never had problems. thanks, Francis. [ francis  Jul 26, 2016 ]
Fits my need for this particular scenario; Crutchfield is always reliable. [ Richard  Jun 29, 2016 ]
It fits my needs at a very nice price. [ Steven  Jun 28, 2016 ]
Exactly what I needed to power outdoor extension speakers. [ Charlie  Jun 13, 2016 ]
This is a good amp with all the perfect specs and features! [ electrician  Jun 10, 2016 ]
I already have an 7.1 surround sound system being powered by an Onkyo TX809 and Doug suggested the Audio Source AMP100VS to power the Klipsch AW-650 that I bought for my outdoor area. I got to commend Doug the assistance he provided me and in clarifying the questions I had regarding my purchase. Doug's Bio: [ Kelvin  May 21, 2016 ]

18 questions already asked

Absolutely yes! [ ROBERT C  Oct 24, 2018 ]
I run mine bridged into 8 Ohms, but the manual states: Stereo: 8 ohm: 50W Stereo: 4 ohm: 60W (both are per-channel) [ Mark  Oct 24, 2018 ]
Yes, for us it does two old Yamaha's with 15" woofers + and two out door new Polk speakers Yours Farmer Bill [ WILLIAM  Jul 19, 2018 ]
Speakers yes, Not sure on the sub [ RYAN  Jul 19, 2018 ]
For more assistance related to your specific system and connecting component(s) you already own, please contact an Advisor directly by phone (888.955.6000) or online chat. They can help determine if the AudioSource AMP100VS is the best solution for your current setup; and if not, they can suggest a more suitable alternative. Thanks! [ Larry  May 13, 2018 ]  Staff
Yes, this amplifier CAN be connected to your AV receiver as you specified; preouts on AV receiver to L & R input on amp100. I personally use this amplifier as an mono block which powers my center channel speaker only, as in this configuration it outputs more power with the caveat that it can only power one speaker. [ Miguel  Apr 03, 2018 ]
Absolutely. Just connect the left and right outs on the amp to the left and right pre outs on the receiver. Then run your speaker wire from the receiver to your speakers. If your using it for a home theater set up it's a good idea to run the Audyssee or YPAO for proper level gains. [ Steven  Apr 03, 2018 ]
You'll leave the balance control set int he middle when bridging the amp. The Auto On feature will continue to work when the amplifier is bridged. I hope that helps My bio: [ Ryan  Apr 04, 2018 ]  Staff
There are no difference between A/B vs zone. Speaker A or zone 1 if you are using it for example in the bedroom and speaker B or zone 2 if you are using it in the kitchen or another room. [ JOSELITO  Jun 25, 2017 ]
I am not sure about how your Onkyo TX-8160 works, but my Onkyo TX-RZ800 has a Zone 2 for which it provides additional power, and a Zone 3 for which it only provides audio signal. I use the AudioSource AMP100VS to power my Zone 3 speakers. The AudioSource allows me to connect two sets of speakers (A/B) in Zone 3 and switch between them. [ Arush  Jun 23, 2017 ]
Much depends on your speaker selector switch and it's capabilities. If it's working now with your Sony receiver, it will likely work with the AMP100VS as well but, the AMP100VS is not as powerful as your Sony receiver so, you would have fewer watts per speaker (and less volume from each as a result). For additional assistance and personalized recommendations, I recommend contacting the Crutchfield A/V Design Group: [ Ryan  May 31, 2017 ]  Staff
That set up will work if it is "A" or "B" but not both simultaneously due to the low output. Even then don't expect a high level of volume. [ Charlie  Apr 16, 2017 ]
You cannot, the switch is either "on"bridged or not. [ daniel  Apr 15, 2017 ]
yes [ John  Oct 12, 2016 ]
All i can tell you is that this amp was NOT for me. Using it means you lose volume control via your Onkya receiver. Also, i was able to use my Onkyo to power all 6 speakers in my house, so the amp was a total waste of money n time -for me.... Good luck [ Michelle  Oct 12, 2016 ]
Yes you can. That's what I'm using it for. I haven't had any issues yet [ MARTHA  Oct 12, 2016 ]
Scott: I have re-read the manuals for both this amp, and a similar Russound amp, which I also own, and I don't think your can play two speakers in mono -- only one. It is too bad that these two amps don't have a mono mode as well as a stereo/bridged mode. Then you could. I wonder what would happen if a person wired both speaker outputs (R and L) to one speaker? I wouldn't risk it myself, but if there is an engineer in the room?????? [ DANIEL H  Sep 07, 2016 ]
There is no such setting on the front panel of the AudioSource AMP100VS. This is best accomplished by setting the source devise (AV Receiver for example) to mono output. [ Charlie  Sep 07, 2016 ]
Thanks for your question. Yes it does. On the front panel you have your volume and balance controls. On the back panel will be your bass and treble controls. Hope that helps. [ Kenny  Jul 19, 2016 ]  Staff
You would need at lest 2 amps to do this. You can only use 2 channels of the amp at a time. If you double up the 8 ohm speakers on each channel of the 2 amps it will let you use all 8 speakers. It will put a lot of load on the amps doing that, but as long as you don't run them too loud for long it may not affect the life of the amps too much. Most 8 ohm rated speakers will run lower than that (about 6 ohms) normally. So you will be putting more load than the amp is rated to handle by using 8 speakers on 2 amps. I would not even try doing that with just 1 amp. It will fry itself pretty quick. [ Jefferson  Jun 28, 2016 ]
Yes, the AudioSource AMP100VS has front panel A/B speaker switching controls and you can push both the A + B buttons in to play each pair simultaneously. I hope that helps. My Bio: [ Larry  Apr 27, 2016 ]  Staff
You can connect two pairs of speakers to this amp. I hope that helps! My Bio: [ Paul  Apr 27, 2016 ]  Staff

would like to send you to a different page.

Go there