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Akai AM-U04

Stereo Integrated Amplifier (1980-81)

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Akai AM-U04

Specifications

Power output: 48 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.008%

Damping factor: 140

Input sensitivity: 3mV (MM), 150mV (DIN), 150mV (line)

Signal to noise ratio: 82dB (MM), 95dB (line)

Channel separation: 60dB (line)

Output: 150mV (line), 30mV (DIN), 1V (Pre out)

Speaker load impedance: 4Ω to 16Ω

Dimensions: 440 x 105 x 308mm

Weight: 10.1kg

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Reviews

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rating
Reviewed Dec 24th, 2015 by nsuntzeff

Here in Chile at my sister-in-laws house I found an Akai system with an AM-U04 amplifier and an Akai EA-A2 graphics equalizer, with an AT-K33 tuner and CS-MO2 tape deck. There was also a Pioneer direct drive PL-4 turntable. It was purchased around 1980 or so by her son.

I set it up and one thing confused me. The jumper from the preamp to the MAINs were missing. I had not encountered this before (I am a novice here!). I figured out that the preamp must be connected to the input of the equalizer and the output of the equalizer to the MAIN of the AM-U04.

With that, the system worked very well. The turntable needed a new needle, and I wish I had some DeoxIT F it to work the crackle out of the dials (pots). Deoxit is expensive but it does wonders.

So, for the price of a needle, I have a great stereo system here in Northern Chile.

rating
Reviewed May 04th, 2015 by ArunKantiDas

I have akai AM U04 with akai-bush equaliser. satisfied with its crystal clear & cool listenning environment. many many thanks to hifiengine and also who uplode the service manual & user manual of akai AM U04.

 

Comments

Problema con Akai AM-U04

Hola a todos.
Tengo un amplificador Akai modelo AM-U04 y el problema es que no conecta los parlantes. Al elegir que parlantes quiero usar (A o B), luego de unos segundos pega el relé correspondiente y enseguida se despega, y repite así continuamente. Alguien me puede dar alguna pista de que es lo que está fallando? También prende cada tanto el led de Clipping, aunque no tenga ninguna estrada de audio.
Desde ya muchas gracias.
Enrique

psicofili's picture

am u 04

was my first hi fi amp many years ago ...!

Agradecimiento

Muchas gracias por el manual.
Tengo que reparar la fuente de +-40V (TR9 y TR12).

akai am-u04

огромное спасибо автору-меценату за схему.

JOSENIEV's picture

User Manual Akai AM-U04

If someone has the manual of operation or instruction manual of use of this apparatus, please share it with us. Thank you very much.

boris139's picture

User Manual Akai AM-U04

User Manual Akai AM-U04

JOSENIEV's picture

User Manual

HELLO DEAR FRIEND BORIS139. HAVE THE USER OF THIS AMP. OR KNOW WHERE TO FIND IT?. GREETINGS AND THANK YOU.

boris139's picture

manual

EDIT manual uploaded

re: manual

Many thanks for the uploaded manual. Years longing for this. Beautiful and good piece of amplifier. Great hifi equipment were those late '70s and early '80s Akais.

JOSENIEV's picture

boris139 and hifiengine.

HELLO DEAR FRIEND boris139 THANK YOU FOR THE USER MANUAL OF AKAI AM-U04. ALSO THANKS TO hifiengine FOR HAVING THIS SITE MEETING FOR THOSE WHO LOVE THE HI-FI EQUIPMENT. HE WANTED THIS MANUAL FOR SEVERAL YEARS AND NOW I AM VERY HAPPY TO HAVE IT.

re: boris139 and hifiengine.

hi haw are you i want to know what stk we can put in akai emplifer am u 04 thanks a lot

boris139's picture

manuals

У меня есть много мануалов для АКАЙ-могу поделиться кому будет надо.

This website is not affiliated with or sponsored by Akai. To purchase AM-U04 spares or accessories, please contact the company via their website or visit an authorised retailer.