Audio ControlRialto 400 CompactAmplifier

AudioControl Rialto 400 - Compact Amplifier and DAC

The AudioControl Rialto 400 is a powerful 2.1 channel compact amplifier with a built-in audiophile-grade digital-to-analog converter (DAC). Designed for superior sound quality and compatibility with voice-enabled devices like Amazon Echo® and Google Home®, it delivers exceptional performance for home theatre and media systems.

This updated Rialto 400 offers over 100 watts per channel into 8 ohms and 200 watts per channel into 4 ohms, and can be bridged to a 400 watt mono-block. Featuring a high-performance Wolfson® DAC, it enhances digital and analog audio sources including Apple TV, Pandora®, Spotify®, and Sonos® systems for clearer, more accurate sound reproduction.

Engineered and manufactured in the Pacific Northwest USA, the Rialto 400 combines compact size with audiophile-quality sound and comes backed by AudioControl’s renowned 5-year warranty.

Key Features

• Compact 2.1 channel amplifier with built-in audiophile-grade Wolfson® DAC
• 100W per channel at 8Ω, 200W per channel at 4Ω
• Bridgeable mono-block delivering 400W output
• Ultra-fast signal-sense switching with priority input for voice-enabled devices
• Digital inputs: Optical Toslink and Coaxial S/PDIF
• Analog inputs: Stereo RCA, speaker level, and 3.5mm (1/8 inch)
• Subwoofer output and headphone output
• AudioControl patented AccuBASS® bass response
• 12V trigger output for system integration
• Compact dimensions: 216mm W x 138mm D x 74mm H

Specifications

Inputs

• Digital: Optical Toslink, Coax S/PDIF 75Ω
• Analog: Stereo RCA, Stereo speaker level, 3.5mm (1/8 inch)
• Input sensitivity: 230mV (RCA), 2.0V (speaker level)
• Signal sense trigger minimum: 10mV (RCA), 100mV (speaker level)

Outputs

• Amplifier channels: 2
• Power output: 100W per channel (8Ω), 200W per channel (4Ω)
• Minimum speaker load: 4Ω
• Preamp outputs: Mono RCA subwoofer, mono RCA bridged

Performance

• Signal-to-noise ratio: >95dB
• Frequency response: 20Hz – 20kHz
• Total harmonic distortion: 0.09%

Control

• 12 Volt trigger outputs: 1

General

• Power consumption (typical): 40W
• Power consumption (maximum): 520W
• BTU/hour heat dissipation (standby): 5.5
• BTU/hour heat dissipation (idle): 85.3
• BTU/hour heat dissipation (1/8 power, loud listening level) 4Ω: 109.2
• BTU/hour heat dissipation (1/8 power, loud listening level) 8Ω: 92.1
• BTU/hour heat dissipation (full power) 4Ω: 426.6
• BTU/hour heat dissipation (full power) 8Ω: 173.3
• Line voltage: 100-120VAC / 200-240VAC switchable

Weights & Dimensions

• Dimensions: 216mm W x 138mm D x 74mm H (8.5” W x 5.4” D x 2.9” H)
• Weight: 2.7kg (6.0 lbs)

What's in the Box

• AudioControl Rialto 400 amplifier and DAC
• Power cord
• User manual
• Warranty information