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Audio Amplification with Automated Switching
Niles Audio TVA50 Stereo Amplifier with Built-in Automated Speaker-level Switching
Niles Audio TVA50 Stereo Amplifier with Built-in Automated Speaker-level Switching
Niles Audio TVA50 Stereo Amplifier with Built-in Automated Speaker-level Switching
Item# 6761
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  • Digital Amplifier Design Provides Outstanding Performance In A Small Discrete Package
  • 50 Watts Per Channel RMS Into 8 Ohms, .05% THD (both Channels Driven)
  • 75 Watts Per Channel RMS Into 4 Ohms, .05% THD (both Channels Driven)
  • Stable Into Low-impedance Loads - 4 Ohms
  • DC, Short-circuit, And Overload Protection With Automatic Reset
  • Two Turn-on Modes: Current Sense And Voltage Trigger
  • Voltage Trigger Input Accepts 3V-30V AC/DC
  • Accommodates Two Pair Of Speakers Via Removable Screwless Connectors
  • 12Volt Control Out 12Volt DC/200mA
  • Removable Three-wire IEC Line Cord
  • CSA Listed And Tested Under UL6500 Standards
  • Dimensions: 8" Wide X 2 3/8 - High X 8" Deep
  • Warranty: 2 year limited

Essential Info

The Niles Audio TVA50 Stereo Amplifier with Built-in Automated Speaker-level Switching allows a local source, such as audio from a bedroom TV, to play through the main system speakers in that room. When activated, by either current sensing or a voltage trigger the TVA50 interrupts the main system’s speaker level signal, and switches to the local source. When the device (TV) is turned OFF, the speakers are switched back to the main system’s audio program. The TVA50 delivers the quality of audio amplification needed to match the high performance amplifiers used in whole-house systems. The TVA50 is also the perfect companion for added flexibility in whole-house systems using Niles SI Series Multi-Channel Amplifiers, or ZR Series Multi-Zone Receivers. Whatever the application, switching to a local TV, computer, portable CD or MP3 player, the TVA50 is the clear choice of professional installers who need solid, reliable performance from an automated switching amplifier.


What's Included

  • TVA50 1
  • IEC three prong AC power cord 1
  • Screwless connectors 4
  • Self adhesive rubber feet 4

More Info

Features and Benefits
  • Compact Size - Allows installation on cabinet shelves, side walls or back panels.
  • RCA Line In Jacks - Two gold plated RCA jacks for line level audio input from local device.
  • 4 Pin Screwless Speaker Connectors
  • Efficient Digital Technology - TVA50 incorporates digital amplifier technology to deliver high output from a small footprint.
  • Current Sense - The current sensing circuit provides reliable switching between the whole house and the local source.
  • Trigger In - The presence of 3-30VAC/DC at the TRIGGER IN terminal switches the TVA50 to the local source.
  • 12VDC Trigger Out - Any time the TVA50 is switched to local source, a 12VDC 200mA trigger voltage is emitted and can be used to control other devices.
  • Volume Control - Adjusts the TVA50 amplifier output level.
  • Multiple Speaker Pairs - The TVA50 allows automated switching of either one or two pairs of speakers.
  • 4 ohm Capability - The TVA50 is designed to remain stable with a 4 ohm load.
  • DC, Short Circuit and Overload Protection - An automatic protection circuit safeguards TVA50.
  • 2 Year Warranty - Two year parts and labor warranty.


Power: 50 watts per channel RMS into
4/8 ohms.
S/N Ratio: >94dB
THD: .05% at rated power.
Mounting: Horizontal or vertical mounting. Keyholes in back panel for vertical mount.
12V Trigger IN/OUT: 3.5mm mini phone jack.
LINE IN: Gold plated RCA
SPEAKER (All): Screwless 4 pin plug-in.
AC IN: IEC type three prong.
Current Sensing Outlet
Wire requirements: 14-16 gauge two-conductor speaker wire for all speaker level connections.
Trigger voltage: IN: 3-30VAC/DC
Trigger voltage OUT: 12VDC/200mA
AC requirement: 120V – 60Hz
Input sensitivity: 500mV @ full output
Dimensions: 2-1/4"H x 8"W x 7-1/2"D
Weight: 3-1/2" lbs

Important notes:
Only merchandise credit for defective items returned within 30 days of purchase. No other returns allowed on this item.
Manufacturer contact information: Niles Audio Corp, Tel: (305) 238-4373


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Average Customer Rating
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OLEN -- galloway, NJ   6/1/2010
a very good unit for my needs

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