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Altec Lansing 9440A

Stereo Power Amplifier

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Altec Lansing 9440A


The Altec Lansing model 9440A power amplifier is a direct coupled amplifier that typically delivers over 250 watts per channel into 8 ohm loads and over 450 watts per channel into 4 ohm loads at less than 0.25% total harmonic distortion.

An optional plug-in line bridging transformer may be used in each channel for balanced inputs.

The circuit design provides fail safe protection for the output transistors and the load.

Provision is made for mounting two accessory fans on the heat sink shroud for greater cooling of the output circuitry.

Designed for rack mounting, the 9440A occupies only four vertical units of rack space.


Power output: 200 watts per channel into 8Ω (stereo), 800W into 8Ω (mono)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.1%

Gain: 37.7 dB

Input sensitivity: 0.6V

Signal to noise ratio: 100dB

Speaker load impedance: 4Ω (minimum)

Dimensions: 7 x 19 x 11 inches

Weight: 56.5lbs

Finish: gun metal grey front panel with clear irridited steel chassis

Accessories: 15335A line transformer, axial fan

Year: 1975


instruction/owners manual   English - guygo

service information   English - guygo

fan kit instructions   English - Piercarlo

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re: 9440A

This was the recommended mating amplifier to their (Altec Lansing) model nineteen (Voice of the Theater) speaker system. The speakers were "only" rated at 65 watts, but with 101db/1watt/1meter sensitivity and 250 watts of headroom, you really did feel like you were at a concert.

re: 9440A

can i use it for home system ?
i have a pare of ar-3a .do you recommend it with a tube pre amp?

Excellent review of Altec

Excellent review of Altec Lansing 9440A!! For true sound experience such amplifier is very effective. I've recently started learning electronic guitar and using this amplifier to tune every tones perfectly. It's a very useful audio accessory.

This website is not affiliated with or sponsored by Altec Lansing. To purchase 9440A spares or accessories, please contact the company via their website or visit an authorised retailer.