Today's audiophile lives surrounded by gadgets filled with ones and zeros, but getting them out and...

HeadRoom Micro DAC

  • Today's audiophile lives surrounded by gadgets filled with ones and zeros, but getting them out and converted into a signal that sounds really great can get tricky. Not any more! Plunk down a Micro DAC next to any digital audio source, whether it's your computer at work or the SqueezeBox in the bedroom, and listen to the beautiful-sounding numbers fly by. Couple it with one of our Micro Amps, and enjoy a little stack of audiophile sweetness on your desk or nightstand. (And... if you're looking for some serious 1's and 0's magic, don't forget to check out Ultra Micro DAC.)

    How it Works

    The Micro DAC is simplicity itself to use: plug in your computer to the USB input, and/or other digital sources to the optical and coaxial S/PDIF inputs; select the desired source using the front panel switch and, voila', your carefully decoded and lusciously tasty analog signal appears on the rear panel line-out. From there you can take the line-out and plug it into another headphone amp, pre-amp, or integrated amp. Keep in mind the HeadRoom Micro DAC is a 'stand-alone', non-amped device and MUST be connected into a dedicated headphone amp stage for final amplification to headphones.


    Cirrus Logic would scratch their collective head if they saw their flagship DAC tucked away in the tiny Micro DAC. The CS4398 is the best performing DAC chip in their line-up with numbers like 120dB dynamic range and -107dB THD+Noise. And it's not alone in there: the Micro DAC has independent power supply regulators for analog and digital sections; digital listening and decoding is done by the CS8416 digital receiver chip before passing numbers off to the DAC; a TI PCM2902 handles the computer USB to S/PDIF conversion before sending the number to the DAC (the analog outs of the 2902 aren't up to the task for this sweet DAC); local decoupling with ultra-low ESR polyphenylene-sulfide film capacitors is provided at each active analog stage; resistors are low-drift, low-noise, 0.1% metal film parts throughout; and a multi-layer circuit board holds it all together while keeping the signals apart. Hard to believe we fit all that in there!

    For a photo of the Micro DAC circuit board and more information about the electronics take a look at our DAC Features Page here. *(Note: iPods, nor any other current hard-drive player, do not have a digital outputs! A headphone jack is an analog output, so the Micro DAC does not work with such players. You need an optical, coaxial, or USB output to use the Micro DAC.)


    An external AC power-supply "wall-wart" is included with the Micro DAC. An upgraded international-use Astrodyne Power Supply is optionally available for audiophiles wanting to fully maximize the audio performance of the Micro DAC.

    *The Micro DAC does NOT include any interconnect cabling. If using the optical digital input, you will need an optical cable, and if using coaxial digital input, you'll need a coaxial cable-- which can be found here. To hook up your Micro DAC to the Micro Amp, you will need a mini 1/8 to 1/8 cable. We recommend the Cardas 6 inch mini to mini cable. For additional cables and lengths, browse all of our cables. All HeadRoom Micro DACs are hand-built in Montana, USA.

Recent Reviews

  1. tdockweiler
    A nice upgrade from the Modi/ODAC
    Written by tdockweiler
    Published Jan 8, 2014
    Pros - Lots of inputs (COAX, USB, Optical), AC powered! Amazing with the HD-650/Q701
    Cons - none yet
    This is a really tough review because to my ears this DAC doesn't really have it's own signature. So the best I can do is compare it to my old ODAC and Modi, but all based on memory.
    First off, Headroom had stopped selling their own brand of gear so I just HAD to buy this. Headroom should reconsider and hire a marketing guru. The small size and plain design doesn't help much. They're built like a tank though and not made out of plastic! Their stuff is much better than all the other Schiit. I skipped it for over a year because I thought it'd just be a side-grade to what I already had. WRONG! Since the Headroom Micro Amp + Astrodyne is the best solid state amp ever made under $500, I had to buy it to complete my "Micro Stack". The Headroom Micro Amp + Astrodyne is so neutral IMO that if you don't like it, maybe you like more coloration (nothing wrong with this) or it's due to the DAC or stock power supply. To me it's like a slightly re-tuned O2 on steroids with all the rough edges taken off. It can drive almost everything, but maybe sweat a little with the He-6. It has 1.21 Jigawatts into 32ohm. OK, it's more like several watts.
    On the first few days it was not like a night and day difference. I found that some songs sounded basically the same.
    After maybe 3 months I can say that the Micro DAC is dead neutral, but yet very very revealing of recording bit-rate and quality. Much more so than the ODAC and Modi. On the Modi you feel as if it's a much more smoother and forgiving DAC. Harsh tracks are not as bad and they're easier on the ears with the Modi. I was pretty shocked when I first used the T90 with my Micro Stack and first heard this when I switched to the Modi. The Modi + Micro Amp despite being not as revealing, was actually a nice and musical combo, but holding the T90 back a little (when it comes to how revealing the T90 can be).
    With the Micro DAC + Micro Amp using both with Astroydyne power supplies, the soundstage of the HD-650 is as large as i've ever heard it. On some more expensive amps the sound can often be warmer and more closed in and congested. The HD-650 with this setup and the right recording can be very very wide open, airy and spacious sounding. You can hear this easily with "The Buena Vista Social" club. You feel as if the instruments are coming at you from all around, up on top of your head and even slightly behind you. All the instruments are very full sounding, as if you can FEEL them. They have much less body on the ODAC and Modi perhaps.
    In comparison the Modi's sound is slightly more "hazy" sounding. Harder to hear in between things. Still very clear, but less expansive and less airy. Ultra subtle details are harder to hear. You can actually HEAR the clearness of a recording properly with the Micro DAC and on the Modi/ODAC this is a little harder. Some recordings actually can sound more muffled on the Micro DAC, but only due to the recording.
    When you listen for hours with the Micro DAC you can easily say to yourself "That's probably a 192kps mp3 file" or something like that and you're almost always right. OK, I can't tell the exact bit-rate but it's usually just a low bit-rate. I know there are plenty of lossless files that still sound like garbage due to recording.
    When I bought this I had my usual expectations. I thought it would probably be bright or thin and harsh. No, it's not. It's just very clear/clean and only reveals what's on the recording. Despite being basically dead neutral, it might actually be a touch warmer than the Modi. It's not actually warm itself, but possibly compared to the Modi.
    It never sounds thin/harsh or bright unless it's the recordings fault or the headphone.
    I actually think the Micro Amp + Micro DAC is so good that the Q701 and HD-650 hold it back. To me they're definitely mid-fi, but I would glady use them with an HD-800/T1 or LCD2.
    The cost of each unit when new was around $350 (+$60-90 for the Astrodyne PS), but to me they're worth up to $600.
    As a whole, the Micro DAC is very clean/clear and sort of analytical. Not thin or bright, but just extremely revealing. If you like your DAC to ADD warmth, don't bother with this one.
    This uses the Cirrus Logic CS4398 DAC chipset and so far I love it! My Ipod Touch 2G uses a Cirrus Logic DAC, but this definitely sounds much more refined and less bright/thin.
    BTW I'd love to compare this against the Bifrost. I'm pretty sure it would be a side-grade. I'd love to get a review unit, but probably not going to happen. I bet the Bifrost also is like a slightly more revealing Modi, but way better. I'm a huge fanboy of the Modi but the Micro DAC is definitely an upgrade.
    NOTE: I will update this review the more I listen to the Micro DAC. It's replaced the Modi, but I've kept the Modi since it's still a keeper.
      MistahBungle likes this.


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