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The HiFi Engine library has images, specifications and reviews for thousands of audio components, along with free downloads of owners manuals, service manuals, schematics and product catalogues for amplifiers, pre-amps, power amps, tuners, tape decks, cd players etc.

The files are free to download, all that we ask is they are not redistributed without prior permission and never for financial gain.

Thanks to the many visitors who have scanned documents and donated images to the gallery.

Onkyo M-504

Owners manual (en) for the Onkyo M-504 stereo power amplifier. Many thanks to batschmidt

Onkyo M-504

Kenwood KX-W8070S

Service manual (en) for the Kenwood KX-W8070S double cassette deck. Thanks again to AlkatrazBR

Kenwood KX-W8070S

Akai AS-1080

Owners manual (en,de) for the Akai AS-1080 solid state receiver. Thanks again to der-pioneer

Akai AS-1080

Sony TC-K555ES II

Service manual (en) for the Sony TC-K555ES II cassette tape deck. Thanks again to boris139

Sony TC-K555ES II

Denon AVR-681 + AVR-1601

Owners manual (en,fr) for the Denon AVR-681 and AVR-1601 AV surround receivers. Thanks again to cdnsnd


NAD 3130

Service manual (en) for the NAD 3130 integrated amplifier. Thanks again to dante22

NAD 3130

April Music Stello Series

Added owners manuals and/or brochures (en) for the April Music Stello Ai500, Stello Ai700, Stello CDA500, Stello CDT100, Stello DA100, Stello HP100 and Stello S100. Thanks again to jalal1926

April Music Stello Series

Akai GX-630DB

Owners manuals (en,de) for the Akai GX-630DB stereo tape deck. Thanks again to der-pioneer

Akai GX-630DB

Marantz ST251

Service manual (en) for the Marantz ST251 AM/FM stereo tuner. Many thanks to Evildean

Marantz ST251

Optimus Pro-X44AV

Added instructions (en) for the Optimus Pro-X44AV mini loudspeaker system. Thanks again to scompton48

Optimus Pro-X44AV

April Music Eximus CD5

Owners manual (en) for the April Music Eximus CD5 compact disc player. Thanks again to jalal1926

April Music Eximus CD5

Akai SW-156

Circuit diagram added for the Akai SW-156 loudspeaker system. Many thanks to Pl530

Akai SW-156

Pioneer SK-21 + SK-31

Service manual (en) for the Pioneer SK-21 and SK-31 radio cassette recorder. Many thanks to Firebug

Pioneer SK-21 + SK-31


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