Item #1101466 Model #RPM181/PRE

Shure Beta 181 Mic Preamplifier Standard


Out of stock
Pickup In-Store

This item is backordered but it is available to reserve now. You will not be charged until the item ships.

Email me when in stock

Save to Wishlist

The base unit for the Shure 181 microphone.

The Shure Beta RPM181/Pre preamp is the base unit for the Shure 181 microphone. This compact preamp attaches to the four interchangeable capsules that are available for the Shure 181 microphone.

The Shure Beta 181 a multipurpose instrument microphone and can be used on a wide variety of applications including guitars, bass and drums (overheads and snares). It has a small diaphragm design that provides superior audio with textbook polar responses in a form factor compact enough to get close to the source in the tightest conditions. The Beta 181 has a precision-engineered, side-address design that features an innovative locking ring to provide secure connection between the capsule and RPM181/Pre preamplifier with integrated XLR connections.

There are four different capsules available for the Beta 181 microphone: Cardioid (RPM181/C), Supercardioid (RPM181/S), Bi-directional (RPM181/BI), Omni-directional (RPM181/S). This makes the Beta 181 an extremely versatile and cost-effective mic that allows the user to interchange capsules according to the application. (Capsules sold separately).

This microphone requires phantom power and performs best with a 48 Vdc supply (IEC-61938). However, it will operate with slightly decreased headroom and sensitivity with supplies as low as 11 Vdc.
  • Net Weight 145 g (5.1 oz.)
  • Dimensions (Length x Diameter): 4.40 in. x .80 in., (124.46 x 20.32mm)


  • The base unit for the Shure 181 microphone
  • Attaches to the four interchangeable capsules (sold separately)
  • An innovative locking ring to provides secure connection to capsules with integrated XLR connections
  • Exceptional low-frequency reproduction
  • Extremely high SPL handling
  • High output level
  • No crossover distortion
  • Transformer output