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 Post subject: Akai U400 / U40 Riff-O-Matic Looper/Sampler
PostPosted: Thu Feb 22, 2018 1:49 pm 
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Joined: Fri Jan 20, 2017 6:23 pm
Posts: 64
Location: Czech Republic
I just found this Thing (It looks like a real fun to have it between soundsource and my SP303) and bought it from Ebay UK (now waiting for shipping).

They are actually dirty cheap now ;)
Big plus for me: No need to delete recorded sample, just record another instead of old one. It has no memory for storing sample (after powering the unit off, it's gone).

Anyone is using one of these?

Attachment:
U400.jpg
U400.jpg [ 93.62 KiB | Viewed 275 times ]

RIFF-O-MATIC U400
Model:Variable Tempo/Constant Pitch Phrase Recorder RIFF-O-MATIC
Sampling Frequency :29.4 kHz
Recording Time:35.7 seconds
Memory Capacity:2 MBytes
Controls:
PLAYBACK TEMPO
NORMAL, 2/3, 1/2
NOTE GRABBER
SOLO/FREEZE
SET LOOP
START/END
VARI PITCH
RECORD
PLAY/STOP
Power Supply:DC 10.5V 150mA
Manual:
https://medias.audiofanzine.com/files/a ... 480323.pdf

Attachment:
U40.jpg
U40.jpg [ 21.28 KiB | Viewed 275 times ]

RIFF-O-MATIC U40
Model:Variable Tempo/Constant Pitch Phrase Recorder RIFF-O-MATIC
Sampling Frequency :20 kHz (Normal), 10 kHz (Record time x2)
Recording Time:13 seconds (Normal), 26 seconds (Record time x2)
Memory Capacity:512 KBytes
Controls:
Output Filter: Off: Full range response Mid: Isolates midrange instruments Low: Isolates bass instruments
Tuning: Transposition: +/-6 semitones Fine Tune: +/-50 cents
Note Grabber: Isolates individual notes Record Modes Normal Continuous Power Requirements: 10.5 V DC
Power Supply:DC 10.5V 150mA
Manual:
http://machines.hyperreal.org/manufactu ... Manual.pdf

I hope I can modify it to change pitch / samplerate continuously by some pot.

It seems they are from around 1999/2000

Here are two Vids:
https://www.youtube.com/watch?v=PaB-_89gMk0
https://www.youtube.com/watch?v=awd1Psma7ts


Last edited by ryba on Thu Feb 22, 2018 2:43 pm, edited 2 times in total.

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 Post subject: Re: Akai U400 / U40 Riff-O-Matic Looper/Sampler
PostPosted: Thu Feb 22, 2018 2:41 pm 
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Joined: Wed Jan 09, 2013 3:19 pm
Posts: 122
Looks cool, but now I want one.


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 Post subject: Re: Akai U400 / U40 Riff-O-Matic Looper/Sampler
PostPosted: Thu Feb 22, 2018 2:57 pm 
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Joined: Sun Jan 04, 2009 9:43 pm
Posts: 7256
Location: France-Italy
i don't konw for the 400 but on the U40 you have filter and reverse too
U40
https://www.youtube.c%20om/watch?v=YhgTTMq3K38
U400
https://www.youtube.com/watch?v=PaB-_89gMk0

they both do things...

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 Post subject: Re: Akai U400 / U40 Riff-O-Matic Looper/Sampler
PostPosted: Thu Feb 22, 2018 3:12 pm 
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Joined: Fri Jan 20, 2017 6:23 pm
Posts: 64
Location: Czech Republic
Both can reverse.
U400 has Hi&Lo fiter together:
SOLO band-pass filter isolates the specific guitar sound that you want to transcribe

U40 is mode difficult in navigation (edit matrix), U400 is more straightforward

They Both do things...


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 Post subject: Re: Akai U400 / U40 Riff-O-Matic Looper/Sampler
PostPosted: Thu Feb 22, 2018 7:57 pm 
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Joined: Mon Aug 14, 2017 5:47 pm
Posts: 393
seems like a simple but useful never the less

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