<s>
The	O
Shure	B-Algorithm
Beta	I-Algorithm
58A	I-Algorithm
is	O
a	O
rugged	O
dynamic	O
supercardioid	O
microphone	O
developed	O
by	O
Shure	O
Incorporated	O
specifically	O
for	O
live	O
vocal	O
performances	O
.	O
</s>
<s>
Originally	O
the	O
Beta	B-Algorithm
58	I-Algorithm
was	O
available	O
as	O
the	O
Beta	O
58C	O
(	O
chrome	O
grill	O
)	O
or	O
the	O
Beta	O
58M	O
(	O
matte	O
grill	O
)	O
.	O
</s>
<s>
The	O
Beta	O
58C	O
was	O
eventually	O
discontinued	O
and	O
the	O
Beta	O
58M	O
became	O
just	O
the	O
Beta	B-Algorithm
58	I-Algorithm
.	O
</s>
<s>
The	O
Beta	B-Algorithm
58	I-Algorithm
was	O
then	O
discontinued	O
and	O
replaced	O
by	O
the	O
Beta	O
58A	O
.	O
</s>
<s>
In	O
1996	O
,	O
Shure	O
altered	O
the	O
Beta	B-Algorithm
58	I-Algorithm
to	O
create	O
the	O
Beta	O
58A	O
,	O
with	O
a	O
completely	O
new	O
cartridge	O
design	O
,	O
meant	O
to	O
mimic	O
the	O
old	O
cartridge	O
as	O
far	O
as	O
polar	O
pattern	O
,	O
output	O
level	O
,	O
and	O
frequency	O
response	O
,	O
but	O
with	O
slightly	O
different	O
sound	O
characteristics	O
;	O
the	O
revised	O
design	O
also	O
removed	O
the	O
hum-bucking	O
coil	O
and	O
added	O
an	O
output	O
transformer	O
.	O
</s>
<s>
Regarding	O
the	O
difference	O
between	O
the	O
Beta	B-Algorithm
58	I-Algorithm
and	O
Beta	O
58A	O
,	O
the	O
manufacturer	O
's	O
website	O
says	O
,	O
"	O
The	O
Beta	O
58A	O
has	O
a	O
completely	O
new	O
cartridge	O
in	O
it	O
.	O
</s>
<s>
Though	O
the	O
shape	O
and	O
intended	O
applications	O
are	O
similar	O
,	O
the	O
Beta	O
58A	O
has	O
little	O
in	O
common	O
with	O
the	O
earlier	O
and	O
popular	O
SM58	B-Algorithm
.	O
</s>
