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Alesis iO2 Express USB Audio Interface

  • B&H # ALIO2E
  • Mfr# IO2 EXPRESS

Product Highlights

  • 2-Channel
  • 24-Bit / 48kHz
  • 1/4" Phone Line & XLR Mic Input
  • 1/4" TRS Insert Connection
  • 48V Phantom Power
  • USB Bus Powered
  • Includes Cubase LE Software

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The Alesis iO2 Express USB Audio Interface is an affordable yet efficient way to improve your computer's audio quality in home and project recording applications. The iO2 is a USB powered audio interface with 2 line/guitar switchable inputs, 2 balanced XLR microphone inputs with 48V phantom power, 1/4" phone TRS inserts for connecting external processors, stereo and headphone outputs for monitoring.

The layout on the compact iO2 delivers easy accessibility to level controls, line switching, etc. A copy of Steinberg Cubase LE is included for users who are just getting started with software audio recording. The Alesis iO2 is easy to install and operate, and is well suited for musicians, singers, podcasters, DJs, audio for video applications and much more.

Two-channel computer audio recording interface
Record up to 24-bit, 48kHz audio into virtually any software
Monitor sessions with balanced studio monitor and headphone outputs
High-quality A/D and D/A converters, discrete-design preamps, 48V phantom power
Inputs for microphones, line-level sources, and instruments including guitars
Tricolor stereo level meter and lighted status indicators for visual monitoring
MIDI Input and Output jacks for playing and controlling software with instruments
USB bus powered - no external power supply needed
System Requirements Mac: OS X 10.2+
Windows: XP, Vista, or 7
USB port
Frequency Response MIC/LINE IN to USB OUT: ±0.1dB
MIC/LINE IN to MAIN OUT (through ADC/DAC) ±0.35dB
Signal-to-Noise Ratio MIC/LINE IN (balanced) to INSERT OUT: 110dB A-weighted, input impedance at XLR or 1/4" jack = 600 Ohms
GUITAR IN (unbalanced) to INSERT OUT: 99dB A-weighted, input impedance at 1/4" jack = 600 Ohms
MIC/LINE IN (balanced) to USB OUT: 99dB A-weighted, input impedance at MIC or LINE jack = 600 Ohms
GUITAR IN (unbalanced) to USB OUT: 94dB A-weighted, input impedance at 1/4" jack = 600 Ohms
MIC/LINE IN (balanced) to MAIN OUT (through ADC/DAC): 97dB A-weighted, input impedance at MIC or LINE jack = 600 Ohms
MIC/LINE IN (balanced) to MAIN OUT (through direct monitor): 95dB A-weighted, input impedance at MIC or LINE jack = 600 Ohms
THD & Noise MIC/LINE IN (balanced) to INSERT OUT: <0.001% Input Gain = minimum, 1KHz input signal, INSERT OUT = 5.7dBV
GUITAR IN (unbalanced) to INSERT OUT: 0.034% Input Gain = minimum, 1KHz input signal, INSERT OUT = 5.3dBV
MIC/LINE IN (balanced) to USB OUT: 0.003% Input Gain = minimum, 1KHz input signal, USB OUT = -0.3dBFS
GUITAR IN (unbalanced) to USB OUT: 0.034% Input Gain = minimum, 1KHz input signal, USB OUT = -0.7dBFS
MIC/LINE IN (balanced) to MAIN OUT (through ADC/DAC): 0.005% Input Gain = minimum, 1KHz input signal, MAIN OUT = 5.6dBV
MIC/LINE IN (balanced) to MAIN OUT (through direct monitor): 0.006% Input Gain = minimum, 1KHz input signal, MAIN OUT = 5.6dBV

REVIEW SNAPSHOT®

by PowerReviews
Alesis iO2 Express USB Audio Interface
 
3.6

(based on 14 reviews)

Ratings Distribution

  • 5 Stars

     

    (8)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (4)

71%

of respondents would recommend this to a friend.

Pros

  • Compact (5)
  • Easy to use (5)
  • Good audio (4)
  • Lightweight (4)
  • Versatile (4)

Cons

    Best Uses

    • Amateur recording (5)
    • Home studio (5)
    • Performances (3)
      • Reviewer Profile:
      • Experienced (5)
      • Primary use:
      • Personal (5)
      • Computer Platform:
      • PC (4)

    Most Liked Positive Review

     

    Surpising results

    Easy to hook up, but the included Cubase software is a total pain to activate--so I downloaded Audacity for free online which works fine. The bit rates the maunual tells you to assign...Read complete review

    Easy to hook up, but the included Cubase software is a total pain to activate--so I downloaded Audacity for free online which works fine. The bit rates the maunual tells you to assign for Windows 7 arent available, but I picked the closest one and the unit worked fine. You do have to modulate the gain/volume quite a bit to get the best results. I use the unit with a Korg M50 Keyboard and was shocked at how good the WAV file sounded with better than CD quality.

    VS

    Most Liked Negative Review

     

    Alesis io2 Is In Need of Improvement

    I thought that this Alesis io2 would be a good way to add two tracks and send it via USB to multi-track recording software. It's made so that two separate tracks and multi channels are...Read complete review

    I thought that this Alesis io2 would be a good way to add two tracks and send it via USB to multi-track recording software. It's made so that two separate tracks and multi channels are possible. That's a step up from the lower end products still out there. At first, I liked the basic features yet, most plug in powered USB mixers have many more than this USB powered IO device. It worked o.k. at first yet, the phantom power seems too weak of a boost for my preference. The phantom power that it comes with, is only enough to activate a condenser microphone and make the signal register and function. You could tweak the signal once it's in the software but, I have seen phantom power that was much more intense, warmer and fuller. What broke mine is when I connected my effects processor and my guitar to one track/channel, and then my microphone and tube pre-amp, to the second track/channel. That was the last time it ever worked. I do not think that should have blown it out, its normal activity for musicians and engineers to need to chain things together and make circuits. I tried to fix it, by adjusting and checking the software settings, sample rate, buffers, sound card, and drivers. But, this thing is toast; and I only had it for a year. This device would be a fair/good deal, if it was at a much lower price, came with a 10 year warranty and if it was durable; able to handle both ordinary and more complicated applications, and also if it came with improved phantom power. They really need to improve this thing and drop the price. Otherwise, you pay a spiked price for junk that they will not back up past 45 days, or whatever the policy and warranty. I highly recommend, that if you can plug into a power source, buy a real mixer with USB instead. A wall plug in powered USB mixer with phantom power is usually always higher quality, has more features, greater value for a comparably better price. Check those out instead of this toy, and if you need a USB powered IO device, maybe try something else and put a warranty on it.

    REVIEWS

    Reviewed by 14 customers

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    (1 of 1 customers found this review helpful)

     
    1.0

    Alesis io2 Is In Need of Improvement

    By Warm Tube Glow

    from Minneapolis, Minnesota

    About Me Singer and Guitarist

    Pros

    • USB powered

    Cons

    • Not durable

    Best Uses

    • Dynamic microphone

    Comments about Alesis iO2 Express USB Audio Interface:

    I thought that this Alesis io2 would be a good way to add two tracks and send it via USB to multi-track recording software. It's made so that two separate tracks and multi channels are possible. That's a step up from the lower end products still out there. At first, I liked the basic features yet, most plug in powered USB mixers have many more than this USB powered IO device. It worked o.k. at first yet, the phantom power seems too weak of a boost for my preference. The phantom power that it comes with, is only enough to activate a condenser microphone and make the signal register and function. You could tweak the signal once it's in the software but, I have seen phantom power that was much more intense, warmer and fuller. What broke mine is when I connected my effects processor and my guitar to one track/channel, and then my microphone and tube pre-amp, to the second track/channel. That was the last time it ever worked. I do not think that should have blown it out, its normal activity for musicians and engineers to need to chain things together and make circuits. I tried to fix it, by adjusting and checking the software settings, sample rate, buffers, sound card, and drivers. But, this thing is toast; and I only had it for a year. This device would be a fair/good deal, if it was at a much lower price, came with a 10 year warranty and if it was durable; able to handle both ordinary and more complicated applications, and also if it came with improved phantom power. They really need to improve this thing and drop the price. Otherwise, you pay a spiked price for junk that they will not back up past 45 days, or whatever the policy and warranty. I highly recommend, that if you can plug into a power source, buy a real mixer with USB instead. A wall plug in powered USB mixer with phantom power is usually always higher quality, has more features, greater value for a comparably better price. Check those out instead of this toy, and if you need a USB powered IO device, maybe try something else and put a warranty on it.

    • Primary use:
    • Personal
    • Computer Platform:
    • PC

    Comment on this review

    (1 of 1 customers found this review helpful)

     
    1.0

    Alesis i02 Almost Great until It Breaks!

    By Warm Tube Glow

    from Minneapolis

    About Me Singer and Guitarist

    Pros

    • No power required

    Cons

    • Breaks easily

    Best Uses

    • Dynamic microphone

    Comments about Alesis iO2 Express USB Audio Interface:

    I thought that this Alesis io2 would be a good way to add two tracks and send it via USB to multi-track recording software. At first, I was impressed by the basic features, and the fact that it made two separate tracks/channels possible. It worked great at first yet, the phantom power seems too weak of a boost for my preference. The phantom power it is comes with, is only enough to activate a condenser microphone and make the signal register and function. I connected one channel/track to an effects processor with my guitar, and then my microphone track/channel up to a tube pre-amp, and that was the last time it ever worked. I do not think that should have blown it out, it's normal for musicians and engineers to need to chain things together and make circuits. I even tried adjusting the software and changing settings, checking the sample rate, buffers and drivers. But, this thing is toast; I only had it for a year and paid about $75.00. At some places these things are up to $99.00! This device would be a fair/good deal, if it was at a much lower price, if it came with a 10 year warranty, if it was durable; able to handle both ordinary and more complicated applications, and if it came with improved phantom power. They really need to improve this thing and drop the price. Otherwise, they are just spiking the price for junk that they will not back up past 45 days*. I recommend, that if you can plug in to a power source, buy a real USB mixer instead, they are so much better for the price.

    • Primary use:
    • Personal
    • Computer Platform:
    • PC

    Comment on this review

    (1 of 1 customers found this review helpful)

     
    1.0

    Alesis i02 Works Great Until It Breaks!

    By Warm Tube Glow

    from Minneapolis

    About Me Guitarist and singer

    Pros

    • It has many features

    Cons

    • It did not last very long
    • Not Very Powerful

    Best Uses

    • A low db vocal recording

    Comments about Alesis iO2 Express USB Audio Interface:

    I thought that this Alesis io2 would be a good way to add two tracks and send it via USB to multi-track recording software. At first, I was impressed by all the features, and that it made two separate tracks/channels possible. It worked great at first yet, the phantom power seems too weak of a boost for my preference. I connected one channel to an effects processor and my microphone track up to a tube pre-amp, and that was the last time it ever worked. I do not think that should have blown it out, I even tried adjusting the software and changing settings and drivers. This thing is toast; I had it for a year and paid about $75.00. At some places these things are up to $99.00! This device would be a fair/good deal, if it was at a much lower price, if it came with a 10 year warranty, if it was durable; able to handle both ordinary and more complicated applications, and if it came with improved phantom power. They really need to improve this thing and drop the price. Otherwise, they are just spiking the price for junk that they will not back up.

    • Primary use:
    • Personal
    • Computer Platform:
    • PC

    Comment on this review

     
    5.0

    Awesome product

    By KillerB mic extrodinary

    from San Mateo CA

    Verified Buyer

    Comments about Alesis iO2 Express USB Audio Interface:

    This audio interface works great . Just plug in your mic and guitar start up audacity or whatever multi-track and start recording. You can mix your channels even plug in a piano or drum set into the midi. It does everything I need and was very affordable.

    Comment on this review

    (1 of 1 customers found this review helpful)

     
    5.0

    Works flawless with Ipad2 via Camera kit

    By Bachcur

    from houston, TX

    About Me Guitar enthusiast

    Verified Reviewer

    Pros

    • Versatile

    Cons

      Best Uses

      • Educational Purposes
      • Multimedia

      Comments about Alesis iO2 Express USB Audio Interface:

      The Alesis Io2 is a simple to use product. Specially when used with an ipad2 using Garageband.
      When connected to Roland GI 20 midi guitar you can use the ipad to compose, improvise, record and just have fun using a Godin Guitar as a controller. You need an external USB power Hub to have the right power to get the signal into the ipad.
      What a dream come true.

      The Cubase is a oem product with ZERO support. It is very complicated to use. It is almost useless when you compare to the new generation software such as GarageBand on an ipad2. It is made for programmers and not reagular musicians.

      • Primary use:
      • Personal
      • Computer Platform:
      • Mac

      Comment on this review

       
      5.0

      Instant gratification

      By bubba

      from houston, tx

      About Me Amateur recordist, Bassist, Guitarist, Keyboardist

      Verified Buyer

      Pros

      • Ease of setup
      • Price

      Cons

      • None

      Best Uses

      • Basic home studio

      Comments about Alesis iO2 Express USB Audio Interface:

      Bought this to replace a Tascam interface that used 20% of CPU even when it was idle. The Alesis was recognized as soon as I plugged it into my Windows XP laptop, did everything well right out of the box. Uses hardly any CPU even when it's playing/recording. I'm not using the mic inputs because I use a real mixer in my studio, but everything else on it works just like it should.

      • Primary use:
      • Personal
      • Computer Platform:
      • PC

      Comment on this review

       
      5.0

      Good for Live Streaming also!

      By Arturo De la Mora

      from Weston, FL.

      About Me Experienced

      Verified Buyer

      Pros

      • Easy To Use
      • Excellent Sound
      • Versatile

      Cons

      • Weak

      Best Uses

      • Amateur Recording
      • Home Studio
      • Live Streaming
      • Mobile DJ
      • Performances

      Comments about Alesis iO2 Express USB Audio Interface:

      I use for webcasting with New Generation Streaming Live service. It is easy to connect and you get full control of the audio is entering the computer.

      Comment on this review

       
      5.0

      big improvment

      By mhm...

      from parowan, utah

      About Me Experienced

      Verified Buyer

      Pros

        Cons

          Best Uses

            Comments about Alesis iO2 Express USB Audio Interface:

            I was kind of doubtful that this could make such a big improvement. Everybody made such a big deal about sound cards though so i looked into it. It makes a big difference even on iTunes and other prerecorded stuff, not just for recording. I listened to a song i recorded before i got this and the improvement was comparable to upgrading mics. I was in need of an xlr input on my computer so this knocked out 2 birds with one stone. Great deal for that reason. The headphone and main out both have different volume knobs, i really liked that. You also have a knob that mixes the usb computers noise with the direct in, so the mics and what not, so if the mics overpower your computer playback you can keep your mic gain at the sweet spot and just adjust the monitor mix(is what its called). the mic/line and guitar switch could be really handy for somebody without a good mic, i didn't use it much but it sounded good to me. Having 2 channels is great, but it records them as stereo. mic input 1 is left and 2 is right. i just record them mono and it doesn't do that. double it up if you want it stereo and make one left and one right. There's a mono switch on the io2 that makes the sound mono so you don't just listen with one ear if only using one mic (doesn't make computer playback mono) it still records stereo when that's on, but that should be easy to fix on your recording program. The phantom power switch applies to both channels so you shouldn't mix a dynamic and condenser mic, but you can if your brave, some dynamics aren't hurt by phantom power I've heard. The main out is 1/4" and there is one for left and right, but I've been using the headphone out for my stereo, which also is 1/4". My last problem is that it wont record 44.1 hz properly. it does one track and then the rest it plays at a different hz which makes them play fast and high pitched. so Ive had to record 48 which is fine, better in the end even, and better sounding, that's just to high for a cd or youtube, but when you export a song i found out it can be done in 44.1 hz, so you have the opportunity to listen to your recording at a particularly high quality. cd quality is also 16 bit, this records 24, you just should export the song at cd quality. that just helps hear the song better for mixing it and what not. Ive loved this thing, i highly recommend it, everything sounds much more defined then the old sound card. But cubase was bad, to confusing, probably good when you get used to it though. I just stuck with audacity.

            Comment on this review

             
            5.0

            Geat deal!

            By AHIGH

            from Louisville, KY

            About Me Professional Musician

            Verified Buyer

            Pros

            • Clear Sound
            • Compact
            • Easy To Use
            • Lightweight
            • Versatile

            Cons

              Best Uses

              • Amateur Recording
              • Events
              • Home Studio
              • Performances

              Comments about Alesis iO2 Express USB Audio Interface:

              No problems with install on windows XP.
              Low latency with ASIO for all drivers.

              Comment on this review

              (1 of 1 customers found this review helpful)

               
              5.0

              Great value, top quality, easy to use

              By Briteboy

              from Minneapolis, MN

              About Me Experienced

              Verified Buyer

              Pros

              • Clear Sound
              • Compact
              • Easy To Use
              • Overall Value
              • Usb powered

              Cons

                Best Uses

                • Home Studio

                Comments about Alesis iO2 Express USB Audio Interface:

                My first foray into computer based recording using Cakewalk included the need for an audio interface. Chose this one based on positive reviews and price point and its simplicity/small size. Glad I made this choice, super easy to install and intuitive interface and best of all under $100. Have purchased many items from B&H with excellent results as well so this was a no brainer.

                Comment on this review

                (0 of 1 customers found this review helpful)

                 
                1.0

                Bad support for non-working product

                By dbert

                from Riverside, CA

                About Me Experienced

                Verified Reviewer

                Pros

                • Compact
                • Lightweight

                Cons

                • No support from Alesis
                • Unreliable

                Best Uses

                • Paperweight

                Comments about Alesis iO2 Express USB Audio Interface:

                I bought this for a cheap option to use a balanced output to my studio monitors. I got no sound using the Windows 7 drivers (no drivers are provided) or the ASIO driver downloaded from Alesis. I can get a low-volume test tone in Ableton Live using their generic ASIO driver, nothing else. Bundled software is not working - Steinberg offers no support and their registration process is horrible. They won't send out an email to finish creating an account, and no support until your account is created. Alesis has not responded to my email support requests. During a 45-minute phone call I was told to uninstall and reinstall software - same results.

                Comment on this review

                 
                4.0

                Surpising results

                By Lex

                from omaha, NE

                About Me Novice

                Verified Buyer

                Pros

                • Cheap
                • Great Sound

                Cons

                • Gain hard to modulate

                Best Uses

                • Amateur Recording
                • Home Studio

                Comments about Alesis iO2 Express USB Audio Interface:

                Easy to hook up, but the included Cubase software is a total pain to activate--so I downloaded Audacity for free online which works fine. The bit rates the maunual tells you to assign for Windows 7 arent available, but I picked the closest one and the unit worked fine. You do have to modulate the gain/volume quite a bit to get the best results. I use the unit with a Korg M50 Keyboard and was shocked at how good the WAV file sounded with better than CD quality.

                Comment on this review

                 
                5.0

                Great for voice over work

                By cuulblu

                from Hickory, NC

                About Me Experienced

                Verified Buyer

                Pros

                • Clear Sound
                • Compact
                • Easy To Use
                • Lightweight
                • Versatile

                Cons

                  Best Uses

                  • Amateur Recording
                  • Home Studio
                  • Professional Recording

                  Comments about Alesis iO2 Express USB Audio Interface:

                  This is a great product for voice over work without breaking the budget.

                  Comment on this review

                   
                  3.0

                  USB drivers dont work with most of my au

                  By Marmot Mobile

                  from Ft Collins, CO

                  About Me Professional Musician

                  Verified Buyer

                  Pros

                  • Clear Sound
                  • Compact
                  • Easy To Use
                  • Lightweight

                  Cons

                    Best Uses

                    • Amateur Recording
                    • Mobile DJ
                    • Performances

                    Comments about Alesis iO2 Express USB Audio Interface:

                    Having trouble with IO 2 express connecting with most of my audio programs. Cubase works well of course. Could be compatiblity with windows XP64 pro. Nice unit built very solid a good value for price.

                    Comment on this review

                    Displaying reviews 1-14

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                    What's in the Box

                    Alesis iO2 Express USB Audio Interface
                    • iO2 Express Interface
                    • Software CD
                    • USB Cable
                    • 1 Year Warranty
                     
                     
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