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Avantone Pro CLA-400 Studio Reference Amplifier  From Avantone

800 watts of reference-grade power.

Avantone Pro


"Experience the Difference"

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Manufacturer's Description from Avantone

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. We 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.


Zero fan noise.

The CLA-400 Studio Reference Amplifier is designed to be used in a studio environment 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.



· Monolithic amounts of reference-grade power

· XLR Inputs with Link Output per Channel

· Analog VU metering

· Convection-cooled design for silent operation

Avantone Pro

About Manufacturer

Avantone is a creative vehicle, enabling our core team to bring to market the things we see as missing in the industry. This can be as simple as a certain price point we feel should be met to give excellent quality for reasonable pricing. At other times, it may be an item that simply does not exist until we build it. We don't use the shotgun approach in creating a product line. Each and every product we create has passion and purpose behind it, whether it costs $20 or $1000. QUALITY: We do 100% Inspection of our mics right here in the USA. Most of our competition skips over this entirely or at best run "spot-checks". This takes us extra time but we want to do it. We care!


8Ω Stereo Power (1KHz): 360W

4Ω Stereo Power (1KHz):   540W

8Ω Bridge Power (1KHz):   760W

Slew rate (at 1KHz):   28V/us 

Input Sensitivity (1KHz):   0.775V (0dBU)

Total Harmonic Distortion (1KHz): <0.1%

Intermodulation distortion:<0.1%

Crosstalk: -70dB

Frequency Response: 20Hz-20kHz +/-0.5dB

Frequency Response: 20Hz-20kHz +/-0.5dB

Input Impedance: (Balanced) 20KΩ (Unbalanced) 10kΩ

Damping Factor(100Hz, 8Ω): 250

Signal to Noise Ratio (A Weighted): >103dB

Amplifier:   Class AB

Dimensions: 483Wx133Hx487D  (19”x5.25”x18”)

Weight:   22.2kg (49lb)