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Clare Controls amp.1640

16-channel multi-room power amplifier

Item #: 883AMP1640

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Compact amp with exceptional sound

The Clare Controls amp.1640 multi-channel amplifier is one cool customer. Unlike traditional amps that run hot and waste a lot of energy, the amp.1640 boasts a high-efficiency Class D design based on Bang & Olufson's great-sounding ICEpower® technology. Plus, its advanced switch-mode power supply consumes less than half a watt in standby mode for lower-cost operation. You get 16 channels of clean power and high-quality audio performance in a compact, cool-running package that's versatile and easy to install.

Flexible options for enjoying music throughout your home

The amp.1640 can distribute music from one audio source, such as a networked music streamer, to multiple rooms in your home. Or you can connect additional sources directly to the individual amplifier channels and assign each one to a single listening room. Each channel pair features its own separate level control so you can easily adjust the volume to fine-tune the sound of your system. Enjoy clear stereo sound in up to eight rooms, or combine two channels into one to give your speakers more juice — a great option for power-hungry outdoor speakers.

Product Highlights:

  • 16-channel amplifier powers up to eight zones
  • power output:
    • 40 watts RMS per channel into 8 ohms
    • 80 watts RMS per channel into 4 ohms
    • each pair of adjacent channels are bridgeable for up to 160 watts RMS x 8 into 8 ohms
  • ICEpower Class D amplifier with advanced switch-mode power supply for exceptional audio quality and efficiency
  • frequency response: 10-20,000 Hz (±0.4 dB at 4 ohms, 8 ohms, or open load)
  • dynamic range: 115 dB
  • total harmonic distortion: 0.003% (at 1kHz, 4 ohms, 1 watt)
  • stereo RCA global bus input for distributing a single audio source among multiple amplifier channels of your choice
  • stereo RCA global bus output for "daisy-chaining" additional amplifiers without the need for "Y" adapters or signal splitters
  • individual gold-plated RCA audio inputs for all 16 channels
  • source selection dip switches for each channel pair allows you to select between the global bus input or individual channel inputs
  • independent gain adjustment for each channel pair allows volume fine tuning and maximum volume level settings for each zone
  • 12-volt power turn-on trigger with 3.5mm input jack
  • removable Phoenix-style speaker connectors accommodate up to 14 gauge stranded wire
  • nine independent protection circuits for monitoring temperature, current, and voltage to assure optimal reliability
  • quiet, variable-speed cooling fan
  • standby power consumption: less than 0.5 watts
  • detachable AC power cord
  • rack mountable chassis (1U rack mount height)
  • 17-1/16"W x 1-7/8"H x 14-1/4"D
  • weight: 8.6 lbs.
  • warranty: 3 years
  • Our 60-day money-back guarantee

Clare Controls amp.1640 Reviews

Hands-on research

What's in the box?

Download owner's manual

  • 16-Channel amplifier
  • 6' AC power cord
  • 16 Speaker terminal blocks
  • 2 Rack ears
  • 4 Screws (w/ washers attached)
  • User Guide

Product Research


Overview: The Clare Controls Amp.1640 incorporates eight matched two-channel Class D amplifiers which combine to deliver eight zones of clean audio performance for distribution of music throughout your home or office.

16-Channel Class D Amp: The Amp.1640 uses Class D amplifier technology which runs cooler and is more efficient (>90%) than traditional Class A/B amps. The Clare Controls Amp.1640 amplifier is rated at 40 watts x 16 channels in 8 or 80 watts x 16 channels in 4.

Bridgeable: The power output of adjacent amplifier channels can be combined to provide extra power when needed in certain locations & applications. This is easily accomplished by flipping a single DIP switch on the amplifier's rear-panel. Bridged power rating of the amplifier is 160 watts (8 only).

Two Independent Feedback Loops: The use of two independent feedback loops allow the Amp.1640 to provide lower distortion, less noise on output, a frequency response less dependent on load, and lower output impedance than other Class D amps. The result is a natural, relaxed and dynamic sound with excellent stereo perspective and a tightly controlled precise bass that will do justice to all your music sources.

8 Zone Inputs w/ Gain Control: The Amp.1640 features eight stereo RCA inputs to connect up to eight different audio sources. Each pair of channel inputs has its own gain adjustment.

Global Switching: The Global input (stereo RCA) allows output of the same stereo audio source to be amplified across all channels of the amplifier which are set to "Global" for easy multi-room applications. You can use the Global gain to control the maximum output for all Global channels at once. The Global output (stereo RCA) allows the Global input of the amplifier to be sent to another amplifier in your system.

Speaker Terminals: Each speaker connection features a removable Phoenix-style connector that accommodates 18 to 14-gauge stranded speaker wire.

Trigger Input: The amplifier can be triggered to turn-on via the 12VDC trigger input (3.5mm) on the rear of the amplifier. This allows the amp to remain in Standby mode until it is required for used, thereby greatly reducing overall power consumption.

Protection Circuits: The Amp.1604 implements a total of nine independent protection circuits, monitoring the temperature, current and voltage of several different functional blocks, assuring uninterrupted music until maximum limits are reached.

Switched-Mode Power Supply:  Using technologies designed by ICEpower, a subsidiary of Bang & Olufsen, the Amp.1640 uses an advanced switched-mode power supply that consumes less than 0.2W in standby.

Rack-Mountable: The Amp.1640 comes with a pair of rack ears and hardware to mount the 16-channel amplifier in your rack system. The Amp.1640 takes up 1U space.

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.

Customer Q&A

1 question already asked

The Crutchfield A/V Design Group will be best suited to help you with this: This specially-trained group of advisors can go over what you have, what you want, and recommend the components & cabling you'll need to get the performance and capabilities you require in each location. I hope that helps! [ Ryan  Dec 04, 2015 ]  Staff