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Alesis iO|2
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Alesis iO|2

USB audio interface from Alesis belonging to the iO series

ermina ermina
Published on 11/11/07 at 15:23
Value For Money : Excellent
Need a better quality interface with a chipset Intgr pramplis variable gain.
Primarily to treat two inputs in real time (guitar + microphone).

Initially I wanted a MOTU 828mkII (in usb saw the price) but this brand does not wish to be recognized under linux. After a few searches I have identified a small number of known compatible cards alsa according to several sources, and I'm DCID for Alesis io2.

- Under a c'tait Chres;
- In this product range (100 <500), a prampli will never be magical, so as not to get too proccuper;
- Simple design, no superfluous function (ah, if the spdif);
- Design and compactness (I hsit with m-audio fasttrack pro because of the buttons on top, without regret in the end);
- 24 bits, like why not? Regarding frquence I saw a bit of everything and anything on the net, so I thought I left with a card 24bits/48kHz (see Implementation)

this card is connecting a laptop in pure: dyne ( https://devel.goto10.org/puredyne ) most of the time under debian & ubuntu sometimes.

UTILIZATION

Installation: Connect
Configuration: jack tell the server to use the card, rgler buffers, the frequencies.
Precisely, in the manual (the data sheet, the thickness seen ^ ^) Specifies it is 96kHz. More on the vendor's site. I'm with jack 48kHz max. Regardless, that's what I thought I had to departure.
(Besides the manufacturer's website ( http://www.alesis.com/product.php?id=8 ) noted 48kHz, there have yad change without notice CHARACTERISTICS since the printing of the plate

! The card is available in 24 bits. For applications that do not directly alsa jack but it seems that this may cause problem ( http://vir.homelinux.org/blog/index.php?/archives/24-Alesis-IO2.html ) .

Report if anything, it works immediately. The manual is fairly succinct (though useless for any Manir), and as he is called "abrgquot guide, or something like that, we expect to find a big pdf on the CD, but no.

GETTING STARTED

Do not use drivers from the manufacturer, RAS.
I get the latency is 2.9 ms. Rel-time kernel is better.
It can record 2 inputs simultanment while reading to the two outputs, the rest does not look that my CPU ^ ^
Given what I did with a chipset Intgr I do not see limits this view l.

No note, then.

OVERALL OPINION

From 29h. I do not use it yet, so. Just look (and find the limits of the card, but given its simplicity I doubt discovering something else over time. To wear on connectors and potentiomtres, we'll see, they look solid without being a standard military

The pramplis are honntes, and even a lot compared to other interfaces more Chréa (edirol particular), a pair of compressors / limiters will insert in handy though.

the +: simple, cheap design, 24bits. SETTING THE level headphone and hand spars.
Power over USB (I'll do a test of independence with the ending for 48V).
the -: for the price, nothing.

With exprience .... I do not have that choice would do because my bank account I will buy a solution to another level (Metric Halo?).
If not, probably yes. Less than out linux drivers for the Tascam US-144?