Add $175.00 for FREE shipping
See all kits!!
Connector Type
RCA Connectors
Sensor Type
Auxiliary Audio RCA Input
Free Standing
LED Feedback
# of Channels
2 Channels
Maximum Power Handling
75 Watts
Ease of Installation
Beginner (Installs < 10 minutes)
Other Ways to Shop
On Sale
Order the Smarthome Catalog

Fully Discrete High Current Stereo Amplifier for High Power Whole Home Music & Home Theater Systems
Niles Audio FG00770 SI-275 High Current 2 Channel Amplifier, 75 Watt
Niles Audio FG00770 SI-275 High Current 2 Channel Amplifier, 75 Watt
Niles Audio Corp. FG00770 SI-275 High Current 2 Channel Amplifier, 75 Watt
Item# 67274
Price: Normally $599.95 
Hot Deal $329.14
Free shipping on orders over $175 - See Details


  • Shelf-top
  • Manufacturer limited two year warranty
  • Staus display for troubleshooting
  • Multiple turn "On" modes
  • Current for reactive loads
  • Illiminates noise from internal fan
  • Designed and engineered in the USA

Essential Info

The Niles Audio SI-275 2 Channel Amplifier offers quality and flexibility that are years beyond that of the competition. Because of excellent quality control and some of the highest standards in the industry, as long as this device is installed and operated properly the user will receive years of satisfaction. This amplifier is designed for powering either home theater or whole home audio applications, which it delivers in a very convenient way. Extraordinary bass and incredible sound dynamics will be provided to every pair of speakers powered by the SI-275. The finest internal parts are used to construct the audio circuitry giving you clear sound and phenomenal imaging.


More Info

Features & Benefits
The SI-275 provides real world power pushing 75 Watts per channel at 8 ohms or 120 Watts per channel at 4 ohms. High quality capacitors, oversized heat sinks, and 1% metal film resistors all take part in creating wonderful transparent sound. High quality gold plated connections have been used in this model to ensure they remain connected without corrosion for years to come.

Absolute silence as a backdrop for your music, in the past, has been hard to obtain. Cross-Talk between channels is eliminated due to each channel being powered with its own individual power supply. Each channel also has an individual level control for volume. This allows you to be sure all decibel levels match and prevent abuse of the system. If a problem were to occur, for example a large spike in voltage through out the home wiring, the amplifier shuts its self off. As soon as the sophisticated protection circuits detect normal conditions, the amplifier will return to its normal operating mode.

More Niles Audio Amplifiers
Niles Audio FG00795 SI-245 High Current 2 Channel Amplifier, 45 Watt
Niles Audio FG01055 SI-2125 High Current 2 Channel Amplifier, 125 Watt

ManufacturerNiles Audio
Manufacturer Product No.FG00770
Design PrincipleLinear voltage/current amplification
Continuous Average Power Output75 watts per channel RMS at 8 ohms, both channels driven, 120 watts per channel RMS at 4 ohms, both channels driven
Input ImpedanceApproximately 15K ohms
Input Sensitivity.920V for 8 ohm rated power, .810V for 4 ohm rated power
Overall Voltage Gain28.5 dB
Frequency ResponseBandwidth from 10 Hz to 70 kHz (-1 dB)
Signal to Noise Ratio> 115 dB, A-weighted
Total Harmonic Distortion @ 8 ohms.02% THD from 20 Hz to 10 kHz @ full rated power
Total Harmonic Distortion @ 4 ohms.02% THD from 20 Hz to 10 kHz @ full rated power
Overall Dimensions17" wide 4" high (including feet) 13-1/8" deep
Weight21 lbs

Important notes:
Only defective exchanges for identical item within 30 days of purchase. No other returns allowed on this item. For defective returns after 30 days, please contact the manufacturer.
Manufacturer contact information: Niles Audio Corp, Tel: (305) 238-4373



Xantech 6.5" Stereo Ceiling Speaker, Single       
Xantech 6.5" Stereo Ceiling Speaker, Single       

Related Items

Customers Also Bought

Sign-up for Exclusive Email offers 
How to Order Track Your Package Shipping Returns Contact Us Customer Service Retail Store
Getting Started Learning Center FAQ Dealers Customer Testimonials Affiliate Program
About Us INSTEON Press Awards Employment Guarantees Security & Privacy
Free Catalog Email Newsletter Forum RSS Site Map
Have questions? Call us at 800-762-7846 (Mon-Fri 5am-7pm and Sat 6am-3pm PT) or send us a message
Place your order by 3pm PT for same day shipping
Copyright 1995-2014 SMARTHOME™
Verisign Secure Site PayPal Acceptance Mark