Description
Chord Electronics Alto Professional Headphone & Speaker Amplifier
The Chord Electronics Alto Professional Headphone & Speaker Amplifier is a meticulously designed headphone and nearfield monitor amplifier, capable of driving up to four pairs of headphones and smaller loudspeakers.
Notably, it marks our first product to include a 4.4 mm Pentaconn TRRRS output (pseudo balanced), catering to the increasing popularity of balanced transmission in high-end headphones.
The Alto features four fascia-mounted headphone outputs, powered ULTIMA technology. It features one 3.5 mm output; two 6.35 mm (1/4-inch); plus a single 4.4 mm Pentaconn. The array of outputs, not only facilitates easy A/B comparisons, but also allows multiple users to listen simultaneously.
For loudspeakers, the Alto delivers 25 watts into 8 ohms (50 watts into 4 ohms), with the transparency, speed and low distortion for which the ULTIMA amplifier topology is renowned. Stereo banana plug outputs are provided on the rear panel, accommodating all but the largest loudspeaker plugs.
The Alto’s ULTIMA topology introduces the company’s dual-feed-forward error-correction technology, which monitors and then immediately corrects signals before the output stage.
Compact yet powerful, the Alto’s dimensions—slightly larger than A5—make it easy to place in any audio system, including desktop set-ups, living spaces and dedicated hi-fi systems.
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Inputs:
- 1 x set of XLR inputs
- 1 x set of RCA inputs
Outputs:
- 4x headphone outputs (1×3.5mm, 1x 4.4mm balanced jack*, 2×1/4”) *pseudo balanced as the amplifier itself is not a balanced design
- 1 x pair of banana sockets for speakers
- 1 x pair of XLR for additional volume control or signal passthrough
- 1 x 12V DC Jack output for use with other products.
Reviews
- Sound on Sound
- Ken Jacobsen
- Headphonia
Features
- 50 W into 4 Ω Bookshelf speaker amplifier
- Desktop size
- Headphone amplifier
- XLR through or signal passthrough
- Trickle down ULTIMA tech
- Dual feed-forward error correction
- Fully balanced system
- HF Switch mode power supply
Specifications
- Output power (Speakers): 50 W into 4 Ω
- Output power (Headphones): 2250 mW into 100 Ω
- THD (Speakers): 003 % into 4 Ω
- THD (Headphones): % into 100 Ω
- Signal-to-noise: 120 dB
- Frequency response: Hz – 60 kHz
- Input maximum voltage: 6 V RMS
- Crosstalk: -95 dB
- Output maximum voltage: 15 V RMS into 8 Ω
- Operation voltage: 80-250 V AC auto-switching
- Dimensions: Length 215 mm, Width 200 mm Height 57 mm
- Net weight: 1946 g
