Niles SI-2100
Crutchfield customer from Cave Creek, AZ on 2/25/2021
0 of 1 found this helpful
Almost perfect
Crutchfield customer from Wayne, PA on 2/11/2021
This amp does exactly what I want it to. 12 volt trigger works great as I'm using this to power 3 "zone 2" speaker pairs. Sound is very good when playing music, but if the source is paused, there is a faint hum that I have not been able to eliminate.
Pros: Great sound, easy install
Cons: Faint hum when no music is playing
1 of 1 found this helpful
Niles SI-2100
Crutchfield customer from Marco Island, FL on 2/2/2021
These 2 amps worked PERFECT for my zone 2/3 application driving 2 pair of speakers per zone with plenty of power and delivering a true audiophile experience. I couldn't be happier.
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0 of 0 found this helpful
Just like peanuts, one is not enough.
Crutchfield customer from Hollywood, FL on 12/19/2020
Just ask awesome little amp, stays cool and sounds crystal clear. Started with one and now have 3 to run my zones. Love it.
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1 of 1 found this helpful
Front height speakers
Crutchfield customer from Aibonito, PR on 12/14/2020
It is a great product and got it at a super sale price at Crutchfield. I purchased it to power my front height speakers paired with a Sony STR-ZA2100ES and it is a good match and integrated perfectly. I do think that my STR-ZA2100ES treble is more airy and refined than on this unit although it is still breaking in and being rated at the same wattage per channel I also believe the Sony is more dynamic and a bit more power but it could be because it is powering the fronts center, surround and surround speakers. Still a great until at a great price, would not change it for another amplifier.
Pros: Design, profile, separte volume for each channel and auto turn on and off are great features. Good high end sound at a bargain price.
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2 of 3 found this helpful
Niles SI-2100
Crutchfield customer from San Andreas, CA on 12/13/2020
0 of 3 found this helpful
Niles SI-2100
Crutchfield customer from Pleasanton, CA on 12/13/2020
Added this to my 7.1 system to power my in-wall subwoofer. Running it bridged the amplifier provides perfect noiseless solid power to drive the speaker.
Pros: Solid power Low heat Auto switching On/Off
Cons: None
1 of 1 found this helpful
Home Theatre Power Amp
Crutchfield customer from Hamilton, OH on 11/26/2020
This Power Amp is terrific! Extremely high quality upon terminating into 4 ohm stereo loads on two pair of Klipsch speakers per channel. And since the output is 220 watts per channel, I have headroom to spare. Great investment for a home theatre audio system.
Pros: Lots of power, seperate power supply for each channel, no distortion.
Cons: Have not found any!
2 of 2 found this helpful
Niles SI-2100
Crutchfield customer from Detroit, MI on 11/23/2020
I love this amp. I'm amped just talking about it! LOL! I like the auto shut off and the ease of use. Waiting for the si 2150 so I can upgrade.
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0 of 1 found this helpful
Brought my AM-1s to life
Crutchfield customer from Saint Johns, FL on 11/19/2020
Love this amp. I had 4 Bower & Wilkins AM-1 hooked up to a Denon 800H A +B but was not getting the performance with all 4 running. I added this to Zone 2 on the Pool Speakers came to life. This is coming from a guy that has a pair of Rev 10s on his boat. Wow load crisp with great base.
Pros: Great power
Cons: None
1 of 2 found this helpful
Niles SI-2100
Crutchfield customer from Bucyrus, KS on 11/18/2020
Used mono bridge for passive sub, worked perfect.
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2 of 2 found this helpful
Niles SI-2100
Crutchfield customer from Absecon, NJ on 11/6/2020
0 of 0 found this helpful
Niles SI-2100
Crutchfield customer from South Orange, NJ on 11/4/2020
This device is simple and powerful. I used it with an old set of Magneplanar MMGs and they have never sounded better.
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2 of 2 found this helpful
Great price for a great product
Crutchfield customer from Alexandria, LA on 10/30/2020
Great amplifier. Does exactly what I need it to do. Great value for this product too.
Pros: Great price, great product
Cons: None
1 of 1 found this helpful
Great product at a great price!
William J. from Stevensville, MD on 10/25/2020
Great product - quality through and through. Wonderful sound.
Pros: Ease of set-up & operation. Stays cool.
Cons: None
1 of 1 found this helpful
Niles SI-2100
Crutchfield customer from Bayamon, PR on 10/21/2020
Great item easy connection and powerful I add two wide speakers to my Onkyo now i have 11.2 sound and is amazing
Pros: Ease connection
Cons: Very big but is slim
1 of 1 found this helpful
21st century design in second room amp
Crutchfield customer from Charleston, SC on 10/19/2020
This is all you need and nothing more in an auxiliary amp, wrapped in a beautiful package. I'm proud to have this as a part of my system!
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1 of 1 found this helpful
Niles SI-2100 as Dolby Atmos Front Height power amp
Crutchfield customer from Seattle, WA on 7/21/2020
I purchased the SI-2100 to power my front height speakers in my 7.1.2 Dolby Atmos setup, driving the SI-2100 from my Anthem MRX-720 receiver. The SI-2100 was easy to add to the system, I used the trigger output of the MRX-720 to trigger the SI-2100 to power on with the rest of the system. The amp is very quiet, no hiss or noise with my ear right against the height speakers.
Pros: Great form factor, easy integration with my surround processor, quiet
Cons: None so far
2 of 2 found this helpful
Niles SI-2100
Crutchfield customer from Englishtown, NJ on 7/15/2020
1 of 1 found this helpful
Solid little amp
Crutchfield customer from Canton, MA on 7/8/2020
I bought two of these to run 4 outdoor NHT O2 ARC (8ohm) speakers that are installed on dedicated fence posts around my pool. Both amps are daisy chained and hanging off of a Marantz NR1506 inside my house. Unfortunately, this makes my speaker wire runs a little long (all >60ft) so I ended up buying two of these amps and running a single speaker (8ohm) off of each channel using 12awg wire. I'm using banana plugs at all connections. NOTE: If I had the ability to do shorter speaker wire runs I would have no problem running a single SI-2100 to power four 8ohm speakers I use these amps almost daily. I've even used them for ~12 hours straight w/o issue. This includes cranking things up and down throughout the day/night. Considering how low profile they are, they don't get very hot. However, if you plan to stack these with other equipment, I suggest placing this amp on top, or making sure to add some space between each device. The only area for heat dissipation is on top of the amp. So far, I'm impressed. They deliver a decent amount of power for the money in a no frills package. If you already have a frontend device (receiver/wifi streaming device), these amps will make a nice addition to your setup.
Pros: Good amount of watts for money Decent speaker terminals Low profile Easy setup
Cons: Probably nitpicking here, but the feet on the bottom of these amps are quite thin making stacking more than one amp a challenge w/o modification or using a shelf
2 of 3 found this helpful
Literal Tears of Joy!!!
Crutchfield customer from Syracuse, NY on 7/8/2020
This unit has brought my speakers to life. Back story, my father had a pair of E V Georgians circa 1964 that I was using a Denon integrated amplifier receiver to push them and the sound was not what I remembered as a boy. I hooked up the Niles Power Amp and all I can say is the speakers came alive. I am totally satisfied with this purchase. Thank you Crutchfield.
Pros: Incredible is all I can say
Cons: None
2 of 2 found this helpful
Niles SI-2100
Crutchfield customer from Santa Rosa, CA on 6/30/2020
Works great paired with my onkyo receiver to power bedroom speakers, sounds fantastic!!
Pros: great price
Cons: None
2 of 3 found this helpful
Niles SI-2100
Crutchfield customer from Barrigada, GU on 6/4/2020
0 of 3 found this helpful
Niles SI-2100
Crutchfield customer from Prescott, AZ on 6/1/2020
Awesome design, awesome power! A fantastic deal!
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0 of 1 found this helpful
Niles SI-2100 is great
Crutchfield customer from Collierville, TN on 5/5/2020
This is an outstanding product. The auto-on (auto-listening) feature is super helpful. The Niles does a great job driving all 8 of my in-ceiling speakers. I use it in combination with my Sonos Connect. Great tandem.
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1 of 1 found this helpful
Perfect!
Crutchfield customer from Norfolk, VA on 5/4/2020
Just what I needed. I used this to run my Atmos channel. Working great!
Pros: Size. Low profile
Cons: Light in front panel is distracting
0 of 1 found this helpful
Great amp
Crutchfield customer from Brewster, NY on 4/30/2020
0 of 1 found this helpful
Niles SI-2100
Crutchfield customer from Alexandria, VA on 3/29/2020
Easy to set up. Banana plugs spaced well. Runs 6 seat shakers in home theater. Works great!
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0 of 1 found this helpful
Excellent, affordable stereo power amp
Crutchfield customer from Richboro, PA on 3/24/2020
Exactly what I needed. Was looking for a simple, affordable, stereo amp to pair with a Denon X3600H to utilize the A/V receiver's ability to process 11.1 (7.1.4 Atmos) channels via the multi-channel output. Anyone with one of these mid-level 9.1 Denon receivers that can process 11.1 should seriously consider this power amp for 7.1.4 Atmos. The ability to use 4 height speakers without compromising the rear surround channels is a game changer considering the cost of a 9.1 pre-amp + this amp vs the cost of an 11.1 pre-amp.
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7 of 7 found this helpful
AN ADD ON POWER AMP
Crutchfield customer from Phila, PA on 3/22/2020
THIS AMP IS VERY NICE. EASY SETUP, COMPACT AND SPACING, AND FITS IN WELL WITH MY PRESENT SYSTEM. EVEN THOUGH ITS A 2 CHANNEL AMP, IT CAN HANDLE UP TO 6 SPEAKERS. GOOD PIECE OF EQUIPMENT FOR THE MONEY.
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1 of 2 found this helpful
Solid
Crutchfield customer from Staples, MN on 3/1/2020
I purchased the Niles amp in replacement of another brand that cracked and popped when sound was at low volume, that was enouph for me too make an upgrade too this amp. Now there is zero noise at low volume and its powerful, the Bass is more robust , midrange as well as highs sound better, Im very happy with this amp. Its very good quality IMOP..
Pros: Quiet, powerful, well made
Cons: None
6 of 6 found this helpful
Niles SI-2100
Crutchfield customer from Cheyenne, WY on 3/1/2020
Nice clean power, easy to hook up, really woke up my speakers.
Pros: Slim design, easy hook up, automatic turn on mode
Cons: None
2 of 3 found this helpful
A Solid Replacement
Crutchfield customer from Bridgeton, MO on 2/26/2020
So far so good. Had to replace my Carver amp from "1980", yes 40 years of service, not bad. All that is now left of my original audio system is a pair of ADS L710 speakers. My requirements aren't what they used to be, and there is where the Niles more than fills the bill of what I want and need. It appears to be an excellent piece of equipment and you can't go wrong with Crutchfield, as trusted name for many years. At the moment very satisfied.
Pros: Great Price!
Cons: None that I know of.
1 of 1 found this helpful
Niles SI-2100
Crutchfield customer from Woodbridge, CT on 11/17/2019
This amplifier is quite remarkable...especially for the money! Used to replace an AudioResearch D-100 amplifier purchased many more years ago then I care to remeber for far more than the Niles SI-2100 cost me, I was not disappointed. The pre-amp is also an AR tube, powering the full range of a pair of top of the line Mirage Tower speakers. I can't say that I am missing anything, and it doesn't take five minutes to warm up. Yes, technology has come a long way in electronics but this is not necesarily so in audio, older is sometimes better. The Niles-SI-2100 stands proudly with the big names of years ago. It doesn't hurt that it weighs practically nothing and fits in a smaller space generating a considerably less heat. Thinking of buying another rather than splitting channels!
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3 of 3 found this helpful
Very Nice Amplifier for Atmos Speakers
Crutchfield customer from Great Falls, MT on 11/12/2019
Using this to drive a pair of SVS Prime Elevation speakers. Works better than expected, good amount of clean power with absolutely no distortion detected at high volumes. Perfect amp for Atmos speakers!
Pros: Very good power for it's size. Was very well packed.
Cons: None so far

1 of 2 found this helpful
Excellent amp to bi-amp my Polk CSi A6
Shanmugaraj from Edison, NJ on 9/24/2019
This is a very nicely built amp. I am using this for center channel Polk CSi A6. Using a Y cable to feed input to both L/R channels in the amp, and am bi-amping my CSi A6, the results are phenomenal. Dialogues are so crisp and clear. I am using a Yamaha RX A1060 receiver. Crutchcfield sales advisor Jenny was so helpful in advising me chose this amp. Niles support is also very reachable. Well built amp, excellent sound output. Well worth the investment.
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3 of 3 found this helpful
Great purchase
Crutchfield customer from Chester, VA on 9/16/2019
Been using this with a set of Klipsch Bookshelf speakers. Pushes them great and clear! I brought this on sale. An awesome purchase. Crutchfield service made the purchase even more worthwhile.
Pros: Good power Clear sound Stable and consistent power
Cons: None this far
2 of 3 found this helpful
Niles SI-2100
Crutchfield customer from Philadelphia, PA on 9/9/2019
Works great and sounds great thx.
Pros: Small footprint and easy to use.
Cons: None
0 of 1 found this helpful
Niles SI-2100
Donald H. from Delmar, MD on 8/11/2019
Awesome amp! Perfect for my application. Pristine response from my Polk A9's. Great customer service and priced to be hard to pass up.
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2 of 2 found this helpful
Good Choice
Greg from Wayland, MA on 4/26/2018
I am quite pleased with the SL-2100. Using for a home audio zone powering speakers in 5 rooms. Power is great. Significant improvement in detail and bass. I've always been interested in Niles Audio products though thought they were expensive. When existing Jamo amp failed and Crutchfield had SL-2100 on sale w/2 day shipping included it was too good of a deal to pass up! This zone is mostly working rooms (kitchen, laundry, garage). Too bad it sounds so good I'd like to sit and listen. I do wish Niles Audio published the power consumption specs so I'd know what it draws standby.
Pros: Clean sounding and powerful. Very good choice for challenging loads.
Cons: No published power consumption specs
5 of 7 found this helpful
Niles SI-2100
Crutchfield customer from Waterloo, NY on 4/2/2018
Product is exactly what i need to power my second set of klipsch rp 280, sound is crisp and clear. Very easy to set up took longer to unpack.
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1 of 1 found this helpful
Plenty of Power and Simple Setup
Steve from Hoschton, GA on 3/17/2018
I'm driving 6 ceiling speakers and 2 patio speakers with this amp. I have a distribution block with amplifier protection, and this amp hasn't had any issues driving all 8. The sound quality is excellent. I use a sonos connect as a source, which I also HIGHLY recommend! Be careful though, Sonos is addicting:-)
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1 of 3 found this helpful
Niles SI-2100
Crutchfield customer from Spring, TX on 3/7/2018
0 of 10 found this helpful
Big Sound
christopher from Fitchburg, MA on 6/21/2017
Had older , discontinued Niles amp and this one blows it out of the water. clean and crisp for my 2, 10 inch outdoor niles subs. I did get 2 amps to drive separately.
Pros: nice stacking ability, easy to assemble.
Cons: None thus far.
1 of 1 found this helpful
Big Little Amp
Tim E. from Louisiana on 10/23/2015
I bought this amp to power 4 outdoor speakers with input from my Pioneer SC-75. I had an older Niles 50 W amp, and wanted a power boost to drive more volume from the outdoor speakers. This amp fit my needs perfectly, delivering good quality, high volume sound at good price.
Pros: Small profile. Good quality and power for the dollar.
Cons: Nothing.
1 of 3 found this helpful
Niles SI-2100
Sam from Missouri on 6/30/2015
Amp for a Sonos and outdoor system. Simple connections and great power response and music quality at the speaker.
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3 of 4 found this helpful
A good amp with even better company support!
Pigeonhed from North Carolina on 5/15/2015
I finally purchased a set of Bose 901s that I had wanted since I was a teenager. So imagine my frustration when even after much research, I found out that the "Tape" loop option I have on my receiver was not suitable for the proprietary Bose 901 EQ. In comes Crutchfield to the rescue! I explained my issue to Morgan and he took the time to look up the manual for my 11 year old receiver online. After determining that I couldn't use the 901s with my current set up, he researched a solution and suggested that I purchase a two channel amplifier as a work around. This Niles was on sale, and the reviews were solid, so I went for it. After about 14 months of happy ownership, the unit failed. I'm not sure why, but if I was forced to guess, it was because I placed it on top of my receiver and it was constantly operating at too hot of a temperature (I personally thought that the air flow was suitable). Since it had been over a year, Crutchfield was not able to help me directly, but they gave me the contact information for Niles. Even though my unit's warranty expired, Niles still serviced the unit for free, and were also very helpful and professional during the process. They had the unit back in about 12 days. Bravo! While the job of any amp is simple, I will say that this little amp cannot be turned up past 20% unless you want to get the police called. The power is clean, with no audible noise. And if you follow the airflow instructions, you will likely have zero issues.
Pros: Powerful; great support from Niles when needed.
Cons: It failed once just after a year which is not ideal, but Niles made it right.
24 of 26 found this helpful
amp'd up
SusanS from dayton, OH on 7/20/2014
Five rooms of our new house have in ceiling speakers. Crutchfield was so helpful in identifying what would work best to connect to our inherited speaker selector. Wonderful sound and I can have all five rooms playing music simultaneously. Used with a Sonos Connect which was so easy to work with
Pros: slim height fits in our media cabinet, easy set up, great sound
Cons: none
9 of 10 found this helpful
Plenty of power
Justin from Boston, MA on 6/5/2014
I have this AMP connected with Sonos Connect and four Niles RS6 Pro rock speakers in my pool area. It sounds great with plenty of power. The auto on feature is great and allows me to turn on the system from my phone. I initially purchased a Yamaha R-500 receiver but it didn't have enough power. This Niles AMP works great with plenty of power for four outdoor speakers.
Pros: Lots of power, simplicity and auto on
Cons: None that I can see so far
5 of 5 found this helpful