Step 3: Power on the amplifier
The driver automatically installs when the amplifier is first plugged into a de-
vice. The SHA900 should take over as the default audio device.
Note:
Volume controls are disabled on Windows, Mac, and iOS. Volume
should be adjusted only by using the amp volume knob for best performance.
Ensure that volume is maximized in iTunes or the Windows Media Player.
Firmware
Firmware is embedded software in each component that controls functional-
ity. Periodically, new versions of firmware are developed to incorporate addi-
tional features and enhancements. To take advantage of design improve-
ments, new versions of the firmware can be downloaded and installed using
the Shure Update Utility tool.
Software is available for download from
http://www.shure.com/update-utility
.
Specifications
Bit Depth
16-bit / 24-bit
Sampling Rate
44.1 / 48 / 88.2 / 96 kHz
Frequency Response
10 Hz to 50 kHz
Signal-to-Noise Ratio
up to 107 dB A-weighted
Adjustable Gain Range
-60 dB to +17 dB
THD+N
0.05% (1 kHz)
Output Power
Maximum, 1% THD
135 mW + 135 mW
16 Ω
95 mW + 95 mW
42 Ω
Output Impedance
0.35 Ω
Headphone Impedance Range
6 Ω to 600 Ω
Limiter
Selectable Analog RMS Limiter
Equalizer
4-band Parametric
USB Input
USB Micro-B Receptacle
Line-In Input
3.5 mm (1/8")
Headphone Output
3.5 mm (1/8")
Charging Requirements
USB-powered: 5 V, 0.5 A to 1 A
Housing
Chrome Plated Aluminum
Net Weight
182.0 g (6.42 oz.)
Dimensions
111 x 59 x 21 mm H x W x D
Operating Temperature Range
-18 to 57 °C (0 to 135 °F)
Battery Specifications
Battery Type
Rechargeable Li-Ion
Nominal Voltage
3.6V DC
Battery Life
up to 20 hours
Analog in (BYPASS EQ mode)
up to 10 hours
USB Input (EQ mode)
Battery Charging Temperature Range
0 to 45 °C (32 to 113 °F)
This symbol indicates that dangerous voltage constituting a risk of
electric shock is present within this unit.
This symbol indicates that there are important operating and
maintenance instructions in the literature accompanying this unit.
IMPORTANT SAFETY INSTRUCTIONS
1. READ these instructions.
2. KEEP these instructions.
Shure Incorporated
SHA900
Portable Listening Amplifier
2017/10/06
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