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Restored and modded Cambridge Audio A3i - diyAudio
https://www.diyaudio.com/archive/blogs/alexcp/1339-restored-modded-cambridge-audio-a3i.html
The designer of Cambridge Audio A3i had talked about the amp in this forum and suggested some changes to the components that bring the performance of the amp to a new level. When I saw a cheap A3i on eBay, I decided to try it out. One channel was DOA, but it did not matter as I was about to mod it anyway.
Cambridge Audio A3i Motherboard Replacement - iFixit ...
https://www.ifixit.com/Guide/Cambridge+Audio+A3i+Motherboard+Replacement/2587
Step 6. With the amplifier on it's side, remove the 4 screws that hold the motherboard frame to the main case. Be sure to hold the motherboard with one hand while removing the mount screws. Edit. Add a comment.
Cambridge Audio A3i Repair - iFixit
https://www.ifixit.com/Device/Cambridge_Audio_A3i
The A3i amplifier was developed in 1996 by Cambridge Audio. The amplifier was designed and engineered in London, England. This device outputs 60 watts per channel, which is an intermediate strength amplifier. It was developed as a budget device, but it is not necessarily a low quality amplifier. Reviews are generally positive.
Cambridge Audio A3i Stereo Integrated Amplifier Manual ...
https://www.hifiengine.com/manual_library/cambridge-audio/a3i.shtml
Manual Library / Cambridge Audio. Cambridge Audio A3i. Stereo Integrated Amplifier (1996) (1 review) Specifications. Power output: 50 watts per channel into 8Ω (stereo) Frequency response: 2Hz to 50kHz. Total harmonic distortion: 0.05%. Input sensitivity: 1.75mV (MM), 200mV (line)
Cambridge Audio A3i repairs and mods | Page 8 | diyAudio
https://www.diyaudio.com/community/threads/cambridge-audio-a3i-repairs-and-mods.122378/page-8
The reason is because Alex designed the amp for a lower voltage than was used by Cambridge Audio, so the BC639/640 transistors are running "on the edge" of their power handling. ... I got an old trusty A3i and would like to upgrade it as what Alex has suggested. I have received the schematics from Alex but on some of the recomendation, he did ...
Cambridge Audio A3i repairs and mods | Page 5 | diyAudio
https://www.diyaudio.com/community/threads/cambridge-audio-a3i-repairs-and-mods.122378/page-5
Cambridge Audio A3i repairs and mods. Thread starter x-pro; ... Not all of us have deep pockets for expensive HiFi and upgrade kits, that's why we use forums like this to help up make the most of what we have. Now I would like to bypass the tone controls ("Tone Defeat") and if possible upgrade some components if possible, I don't have a service ...
Cambridge Audio A3i repairs and mods | Page 19 | diyAudio
https://www.diyaudio.com/community/threads/cambridge-audio-a3i-repairs-and-mods.122378/page-19
Cambridge Audio A3i repairs and mods. ... version of the A3i that was way better than the original but he was unable to do so due to the management decisions at Cambridge Audio. ... If you read this thread from the start you will find performance and reliability upgrades from X_pro that designed this amplifier.
Cambridge Audio A3i Integrated Amplifiers user reviews : 4 ...
http://www.audioreview.com/product/amplification/integrated-amplifiers/cambridge-audio/a3i.html
Features wise, the A3i is jammed packed full of them. Gold plated phonos and binding posts, 4 line ins, tape loop and a quality phono stage which can be swithed to line level if desired. Iside the black box lies some very flashy kit. Fancy led's, high quality capacitors and a hefty power supply wait for the signal. And boy do they capatilise!
SPECIFICATION FOR A CAMBRIDGE AUDIO A3i - AVForums
https://www.avforums.com/threads/required-specification-for-a-cambridge-audio-a3i.1049257/
Here is a link to someone who replaced a power transistor in an A3i, then tested it extensively. That should give you some basic specs, but I think there is also a schematic of the amp. You may need to join to see the schematic. diyAudio Forums - Cambridge Audio A3i repairs and mods - Page 1 Steve/bluewizard
Audiogon Discussion Forum
https://forum.audiogon.com/discussions/cambridge-a3i-or-nad-c-320bee
The A3i was designed by Michael Creek (Creek Audio). It also has a very good phono stage built in, so you can add a turntable. The only real difference between it and a Creek amplifier, is that it is made in Asia instead of the UK.
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