Practical Devices XM3 - XM3 Technical Specifications; General and Power Specifications; Performance Metrics

Description: Portable Audio Headphone Amplifier
Weight: 140 grams (4.9 oz)
Power Source: - 9-volt alkaline, NiMH, NiCd battery, or,
- 8.4-volt NiMH or NiCD battery, and/or,
- External Power Supply
External Power Supply: 2.5mm mono audio connector power
jack.
If using built-in battery charger:
12VDC ± 5% or 9V AC RMS ± 5%
If not using battery charger:
6-20VDC or 6-18VAC
In all cases, polarity is not important
Battery Charge Time (using built-in
charger, typical):
15 Hours
Battery Life (alkaline, typical): 50 hours active, 2.5 years standby
Maximum Gain: +23.1 dB (Gain Boost jumpers in)
+12.7 dB (Gain Boost jumpers out)
Frequency Response (20-20,000Hz,
typical):
+0.8dB, -0.3dB
-3dB Point (typical): 21 kHz at top end;
9 Hz at low end
Total Harmonic Distortion
(typical)
0.002%
Intermodulation Distortion
(typical)
0.0039%
Signal to Noise ratio
(20-20,000Hz, typical):
97dB
18
Specifications