The BA-55
has a three-channel configuration, with one channel featuring an
integrated 2.4 GHz
wireless receiver for use with the included wireless
microphone. The second channel can accept a second Roland wireless
microphone or a standard wired microphone, while the third channel has
RCA, 1/4-inch, and 1/8-inch stereo inputs for audio, instrument or
other line input use. The BA-55 offers global tone controls for quick
sound adjustments and an echo effect that can be switched from the
wireless microphone.
Powered by a high-performance digital stereo amplifier, the
BA-55 features two custom-designed 6.5-inch speakers. These speakers
use an internal accelerometer switch to determine the orientation and
sound output. When the amp is positioned upright (with the two speakers
in a vertical configuration), sound is output in mono to maximize the
distance of sound projection, when the amp is positioned on its side
(with the speakers in a horizontal configuration), sound is output in
stereo to enhance musical performances.
The BA-55 features an Intelligent
Anti-Feedback function that automatically detects
potential feedback problems, eliminating them before annoying howling
sounds are produced. This is a huge advantage over manually adjusting
volume levels, as it allows performers and speakers to place the BA-55
behind them and easily hear themselves without experiencing feedback.
Also onboard the BA-55 is a line output for connecting to a
larger amplification system, allowing a user to employ the amplifier as
a personal monitor. This output can alternately be used to connect to a
recording device, which is great for capturing musical performances or
public speaking. Additional features include a handy auto power off
function and a convenient built-in storage space for the wireless
microphone and other accessories.
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