11
USA-50, 50x, USA-100
and 100x
Controls and Features
USA-50, 50x, USA-100
and 100x
Controls and Features
Smart Amp
Technology
Exclusive
Built-in Active Crossover / Line Level Output:
The 2-way fixed-frequency 100Hz crossover can be configured to input the stereo high pass signal at 18db
and output the summed-mono low pass signal at 24db to another amplifier, or vice-versa. The crossover
can be defeated for full-range in / out.
Built-in Active Crossover / Line Level Output:
Smart Amp Technology:
Both models incorporate a non-computerized version of SAT (U.S. Amps’ exclusive Smart Amp Technology)
that precisely monitors each amplifier channel, the battery voltage, and amplifier temperature. In the
event of a fault condition, SAT will activate to protect the amplifier from damage.
Smart Amp Technology:
Well-Engineered From
Quality Materials:
The USA-50 and 100 feature Mil-
Spec FR-4 plated-through circuit
boards, stuffed with 1% tolerance
parts and U.S. Amps’ own hand-
wound power transformers.
The amplifiers are housed in a
bead-blasted or custom
polished anodized heat
sink. The U.S. Amps logo is
laser-etched or displayed
on a solid zinc emblem.
Well-Engineered From
Quality Materials:
Amplifier Input:
The USA-50 and 100 feature input
isolation and a built-in voltage
divider that will accept input
signals from nearly any source.
It is necessary to provide input
to both channels when operating
the amplifier. Sensitivity
150mv - 3 Volts.
WARNING:
U.S. Amps require a grounded
input connection. DO NOT use
ground-loop isolation devices
on the input of your U.S. Amp!
Amplifier Input:
Gain Control:
The gain control is water and dust-proof for long life and
high fidelity. The input sensitivity can be infinitely adjusted
from 150mv to 10 Volts.
Gain Control:
Connections:
All power and speaker connections are via a heavy-duty barrier
terminal with gold-plated hardware. Use at least 8 gauge wire
for all power and ground connections.
Connections:
Clear Plexiglas Bottom:
U.S. Amps are hand-crafted to a high standard of quality in our Gainesville Florida
factory, and are thoroughly inspected for both cosmetic and operational perfection.
A clear bottom panel displays the attention to detail found in every U.S. Amp.
Clear Plexiglas Bottom:
Power LED Indicator:
The green light in the middle of the palm tree is
connected to the amplifier’s power supply, and
only lights when the amplifier is in working order.
Power LED Indicator:
