Audio-Technica AT-MA2 Microphone Amplifier

◆ This is an amplifier that boosts microphone volume.
◆ It was used only for an experiment to digitize a stethoscope and has been stored at home.
◆ Operation has been confirmed.
◆ One rubber insulator on the bottom plate is missing.
◆ This is a used item, so we ask for your understanding regarding no claims and no returns (NC/NR).
◆ Only the main unit and power adapter are included.
◆ Price negotiation is not accepted.

[Product Description]
(From Audio-Technica Catalog)
Easily adjust microphone volume by simply connecting to your equipment.
● Equipped with a φ3.5mm stereo mini plug and a φ6.3mm stereo standard plug.
● Robust metal body and compact design for space-saving use.
● Switchable between monaural/stereo microphones and supports plug-in power.

[Technical Data]
(From Audio-Technica Catalog)
Rated Output Level: -10dBV
Maximum Output Level: +2dBV (1kHz, 1% T.H.D.)
Frequency Response: 20Hz - 20,000Hz (-3dB)
Gain: +20dB (when GAIN is MIN),
+50dB (when GAIN is MAX)
Maximum Input Level:
-18dBV (when GAIN is MIN)
Total Harmonic Distortion:
0.05% (when GAIN is MIN), 0.2% (when GAIN is MAX)
Equivalent Input Noise Level:
-110dBV (when GAIN is MIN),
-120dBV (when GAIN is MAX)
Power Supply:
DC9V 100mA (using included AC adapter, for Japan domestic use only)
Current Consumption:
30mA (maximum)
Input Terminals:
Microphone Input (φ6.3mm standard jack / φ3.5mm mini jack)
Output Terminals:
Line Output (Pin jack x 2 (L/R))
External Dimensions (excluding protrusions):
H30 x W70 x D92mm
Weight (main unit only):
Approx. 160g