Amps & DACs
HeadRoom Micro Amp
Plug your best headphones into the HeadRoom Micro Amp and hear all the music you've been missing. Designed with high-end audio sensibilities and built to conveniently save space on your desk, the Micro packs deep 'Class-A'-biased electronics plus all the switching center control features needed for audiophile listening into a tiny 3"x3" footprint. HeadRoom Micro Amp features two analog inputs; our famous HeadRoom crossfeed for superb headphone imaging; 3-position gain control to precisely match headphone impedance; and rear panel volume-controlled output for powered desktop or computer speakers. Made in Montana USA.
Reviewed by LA Audio File, May 2010
Product Features:
- Delivers high fidelity headphone audio with discrete component Jung 'Diamond' buffer output amplifier design
- Improves headphone imaging with our famous HeadRoom crossfeed circuit
- 3-position gain switch optimizes amp for headphones of different efficiencies
- Switch between two independent analog line inputs!
- Includes volume controlled pre-amp out for desktop computer speakers
What's In The Box:
- (1) Standard 'Brick' Power Supply (please indicate 120v North American OR 220v for overseas voltage)
Applications:
Want to bring your personal music listening experience to an entirely new level of sound quality? Simply put a Micro Amp between your music source and your favorite headphones and let the beautiful music flood in. Designed to bring fine audiophile electronics into in an affordable space-saving little amp, the HeadRoom Micro Amp is ready to inhabit any tiny nook on your desktop, nightstand, or any other listening place where you have access to AC power. (For battery-powered mobile listening, please check our HeadRoom Portable Micro Amp.)
Features
Sure, it sounds great driving headphones to glorious heights of musical detail and accuracy, but the HeadRoom Micro Amp is also an 'all-singing, all-dancing' fully-featured headphone amp plus pre-amp. The Micro employs deeply 'Class A'-biased electronics and a discrete-component Walter Jung 'Diamond Buffer'-based amplifier output just as found in our pricier Desktop Amp, but uses 'mini' 1/8" (3.5mm) connectors and smaller controls to fit into these tiny dimensions. The HeadRoom Micro Amp is a true Class-A, DC-coupled amp (no capacitors in the signal path) so you know the sound will drive even the most power-hungry audiophile headphones effortlessly and with total precision. The HeadRoom Micro Amp provides an awesome 3.5mm headphone jack on the front, but it also has a similar 'pre-amp' jack on the rear panel that can double as a volume-controlled input into a power amp, computer speakers on your desktop or to your powered bookshelf speakers. The HeadRoom Micro Amp also features two separate 3.5mm line inputs that are selectable from the front panel for easy switching between your sources (an iPod and a computer, for example). Front panel Gain control switch allows you to adjust the volume ranges to easily control headphones of any impedance and efficiency rating. And, of course, our famous HeadRoom Crossfeed circuit centers the audio image on headphones very subtly and quite carefully.
Build
The Micro is enclosed in an amazingly sturdy and lustrous black anodized aluminum enclosure with urethane bezels (the rubber piece around the front and back panel). The bezels handily act as bumpers protecting the amp, and they allow you to securely stack the Micro Amp and the Micro DAC units together. All HeadRoom Micro Amps are hand-built in Montana, USA.
Accessories
An external AC power-supply 'brick' comes included with the HeadRoom Micro Amp. An upgraded international-use Astrodyne Power Supply is optionally available for audiophiles wanting to fully maximize the audio performance of the Micro Amp. The Astrodyne works anywhere on the planet you can find an outlet [from 100V ~ 240V] so it makes a great accessory for frequent travelers. Plus, the Astrodyne also improves upon the sound quality when compared to the 'stock' power supply.
*The Micro Amp does NOT include any interconnect cabling. To hook up your Micro Amp to a portable audio player, you will need a mini 1/8"-to-1/8" (3.5mm) interconenct cable. We recommend the Cardas 6 inch or 12 inch mini to mini cables. For longer runs, we suggest the Cardas 1 meter or 2 meter versions. If you are using an audio source with RCA outputs, the Straightwire 0.5 meter MusiCable cable will work great, or simply browse all of our cables.
Measurements
The Micro Amp is 1.5" (3.8cm) high, 3.5" (9 cm) wide, and 4.5"(11.5cm)long. It weighs only 8.8oz (250 grams). The HeadRoom Micro Amp is hand-built in Bozeman Montana USA.
Specifications:
- Weight: 8.8 oz (250 grams)
- THD at 1V output: <.002
- Dimensions: 3.5" x 4.5" x 1.5"
- Frequency Response: 10–50k, ±0.3
- Input Impedance at 1kHz (ohms): 70k
- Amplifier Group: The Micro Line
- Home Use: yes
- Warranty: 2 Years
Additional Resources:
- Product Manuals
- Micro Amp Manual
- Product Info
- Micro Amp & Ultra Micro Amp Set Up
- Product Reviews
- LA Audio Review, Kevin Nakano
- Macworld, Matthew Ward
Average Rating
Posted by Chang He from San Antonio on 2011-09-30
Recommend Product: Yes
2 out of 2 people found this review helpful. Did you?
Posted by Goomphy from Michigan on 2011-07-28
Recommend Product: Yes
Pros: Clean, wonderful, powerful, distortion free.
Cons: None
2 out of 3 people found this review helpful. Did you?
Posted by Jack's naim from Canada on 2011-06-17
Recommend Product: Yes
Pros: SOUND FOR THE $$$
Cons: ZERO
3 out of 4 people found this review helpful. Did you?







