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Did You Know ?
Circuit Designations
The original U87 was designed with the
traditional German tuchel connector in
mind and therefore, this is the circuit
designation without any affixed letters.
Later on, the circuit was adapted to
accommodate the American switchcraft
connector also known today as XLR and
was named the U87i.
The U87p on the other hand is a small
modification on the U87 circuit which
provides a slightly lower output level for
mic preamps designed for dynamic
microphones with quieter signals.
Combined with the XLR designation, the
microphone is called the U87ip.
In 1986, the circuit of the U87 was
drastically changed into what is known as
the U87a version and as you may have
guessed it, the XLR version is called the
U87ai and is still manufactured to this day.
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U87i
U87p
U87a
