Avantone Pro CLA-400 Stereo Power Amp

Power your passive studio monitors with the CLA-400, an 800-watt studio reference amp meant to bring your studio the most pristine power available.

800 watts of reference-grade power. The Avantone Pro CLA-400 Studio Reference Amplifier is a dynamic, high output, high resolution, full-range system built the old-school way; a classically designed Class A/B amplifier. Avantone took particular care to create an amplifier in the traditional studio style, with generous VU meters, high quality Japanese components and a serious toroidal transformer linear power supply. The CLA-400 implements a classic bipolar transistor design for robust bottom end.

In a standard 3U rack mount chassis, this amplifier can generate over 360 watts per channel into an 8 ohm load, making it perfect for medium to large speakers in a studio environment. The CLA-400 not only uses no-compromise components, but is also convection cooled -- no fan noise, so it can be used in the same room as the monitors.

The CLA-400 was designed to be paired with large passive monitors that demand the highest amounts of power. Very low distortion, steady performance under harsh conditions, and an open and transparent sound make this an obvious choice for discerning studios requiring serious dynamic range.

The CLA-400 Studio Reference Amplifier is perfect for studio environments requiring high power output with no fan noise. Under testing, it delivers a powerful 400 watts into 8 ohms and can run at one third power without thermal fault. The CLA-400 has zero fan noise, as it's convection cooled -- which makes it perfectly suited for control room installation.
WARNING: Cancer and Reproductive Harm - www.p65Warnings.ca.gov.

-8ohms Stereo Power (1KHz): 360W
-4ohms Stereo Power (1KHz): 540W
-8ohms Bridge Power (1KHz): 760W
-Slew rate (at 1KHz): 28V/us
-Input Sensitivity (1KHz): 0.775V (0dBU)
-Total Harmonic Distortion (1KHz): <0.1%
-Intermodulation distortion (at 10% rated power 1KHz): <0.1%
-Crosstalk: -70dB
-Frequency Response: 20Hz-20kHz +/-0.5dB
-Frequency Response: 20Hz-20kHz +/-0.5dB
-Input Impedance: (Balanced) 20Kohms (Unbalanced) 10kohms
-Damping Factor (100Hz, 8ohms): 250
-Signal to Noise Ratio (A Weighted): >103dB
-Amplifier: Class AB
-Dimensions: 483Wx133Hx487D (19"x5.25"x18")
-Weight: 22.2kg (49lb)
Dimensions and Weight in Packaging
Base Item
Shipping Weight: 53.25 lbs
Shipping Dimensions: 24 x 22 x 9 in
Manufacturer Part Number (MPN): CLA400

For support or warranty questions, please contact the manufacturer:
Phone: 845-642-3697

Reviewers gave this product an overall rating of 4 out of 5 stars. (1 ratings)
Submitted December 17, 2022 by a customer from msn.com

"Avantone Pro CLA-400"

Overall: 4 out of 5 stars
(see rating details)
Verified Customer zZounds has verified that this reviewer made a purchase from us.
This amp is loud. The meters barely move. If you want it really loud the meters move. I'm thinking this has more to do with the lack of an input sensitivity switch to go from 0.775V to 1.4V or higher. It is easy to get that over driven sound and you can hear it. I would make an adjustment but you can't without a switch. Maybe I'll try some inline attenuation. I e-mailed Avantone and asked why there wasn't a switch to go to 1.4V. Their response was to turn the mixer down. This is a Pro Amp. I would expect the standard to be 1.4v for the input. So 2 stars for features. This should be a standard feature. Maybe they will have an input module upgrade or choice in the future. That gripe aside, the amp has a very detailed and open sound. It is not dead quiet, but I have HF compression drivers on horns. Power transformer does have a slight hum to it, but it is in a rack and not as noticeable as a fan in other amps. I have yet to notice it getting warm at all. Why they have power ratings at 1KHz I don't understand. No definite rating at the normal 20-20KHz. They do come clean on their website and say it delivers a good 200+ watts at 8 ohms under testing. It looks nice in a rack. I could do with a smaller font size of the CLA-400 and logo. Some metal knobs on the input controls would be nice. The large back lit meters look nice, but they don't really move. Overall I do use this for 2 channel listening and it gets the job done. The amp is not harsh or veiled sounding. It has that nice pleasant read more class AB amplifier sound.

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