Chord Electronics at Audio46
Chord Electronics Alto Professional Headphone Amplifier (Open Box) [Grade A, Full Warranty]
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✓ 3 year limited Chord Electronics warranty
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Product Details
↓ Details provided by Chord Electronics ↓
(Specifications and appearance of this product are subject to change without notice)
Key Features
- 50 Watts per Channel: Ideal for nearfield monitoring with high power output
- Simultaneous Four Headphone Outputs: Two 3.5mm and two 6.35mm outputs for multiple listeners
- Balanced and Unbalanced Inputs: Provides flexibility in audio connections
- Balanced XLR Outputs: For bypass and external monitor control
- 1U Tall for Rack Integration: Designed to fit into 19-inch racking systems
- Designed for High-Resolution Monitoring

Alto: A Professional Audio Headphone and Nearfield Monitor Amplifier
The Alto is a professional-grade, technology-rich headphone and nearfield monitor amplifier, engineered to meet the demands of today’s high-resolution audio environments. With the ability to drive up to four pairs of headphones simultaneously, the Alto is the ideal tool for monitoring and control in professional audio settings.
Powerful Output for Nearfield Monitoring
With 50 watts per channel dedicated to nearfield monitoring, the Alto delivers exceptional audio clarity and power, making it a versatile solution for studio monitoring tasks.
Simultaneous Drive for Four Headphones
The Alto offers ample power to drive four headphones at once, via its two front-panel 3.5mm outputs and two 6.35mm outputs. This makes it ideal for professional environments where multiple listeners need to monitor audio in real-time.
Versatile Connectivity
Designed for seamless integration into 19-inch racking systems, the 1U-tall Alto provides both balanced and unbalanced inputs, along with a pair of balanced XLR outputs for bypass and external monitor control. This flexibility ensures compatibility with a wide range of studio setups.

In The Box
- Chord Electronics Alto
- Remote Control
Specifications
- Dimensions: 200 mm (W) x 44.45 mm (H) x 215 mm (D)
- Frequency response: 6 Hz-60 kHz
- Output power (Speakers): 50 W into 4 Ω
- Output power (Headphones): 2250 mW into 100 Ω
- Signal-to-noise ratio: 119.6 dB
- THD (Speakers): 0.003 % into 4 Ω
- THD (Headphones): 0.001 % into 100 Ω
- Input maximum voltage: 6 V RMS
- Output maximum voltage: 15 V RMS
- Operation voltage: 80-250 V AC auto-switching
- Crosstalk: -95 dB
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