Saturday, September 13, 2008

Headphone Amplifier: Audio Technica AT-HA20

The AT-HA20 is an entry level headphone amplifier; one can expect to pay upwards of $1,000 for a reasonable quality unit, so the low price tag on this model is definitely attractive to many wanting a first time headphone amplifier. The unit is made in China, where most of this type of equipment is made these days.
It was noted that this amplifier to be extremely neutral in that, it didn't greatly color the sound. On most mid priced range headphones it gave the mid range more prominence and really increased the resolution and detail. This amplifier gave them a fuller, richer sound.
As an inexpensive alternative to increase the quality of your audio setup, the AT-HA20 is a reasonable choice. The unit is sturdy and the chassis is a well built aluminium enclosure. Those wanting a built in DAC may consider it's bigger brother the HA25. The sonic quality is good, but I have heard better, but then this is reflected in it's price range.

It is nevertheless a handy back up unit and runs off 12V DC which makes it very convenient.

  • Aluminum alloy body whose rigidity is high.

  • Through out loading which does not make line output wasteful。

  • With 6.3mm standard jack and 3.5mm mini- jack loading 2 unit simultaneous enabled。

  • Illumination function.

  • AT-HA20 Specification
  • Maximum Output Power 100mW + 100mW (32Ω、T.H.D. 5%)
    Frequency Response 10 - 100,000Hz (-3dB)
    Total Harmonic Distortion <0.08%>
    Signal-To-Noise Ratio >90dB
    Power Supply DC 12V 500mA (include AC adapter)
    Input Connections Line Level Analog Input (RCA x 2)
    Output Connector 6.3mm / 3.5mm Headphone Output,
    Line Level Analog Output (RCA x 2)
    Dimensions H44mm x W105mm x D135mm
    Weight 425g

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