Search Microphones

Share This Page

Related Microphones

Bock Audio 241

Pricing & Availability

  • MSRP: $3,650
  • Discontinued


241 Documentation

241 Awards

CardioidBock Audio 241

Cardioid Tube Condenser Microphone

The Bock Audio 241 is a revision of the Bock 151. Both are large-diaphragm, fixed-Cardioid tube mics.

The 241 uses a German-made CK-12-style capsule, modeled after the AKG capsule from the vintage C12 and Ela M 251. Bock Audio uses the same capsule in the 251 (although the 251 is a multipattern microphone).

Although previously reported here as an EF732 (as in the model 151), the tube in this mic has been confirmed by David Bock to be a different pentode, a NOS EF80. That said, the Bock Audio website names the tube as an “EF814k.”

The transformer is hand-wound to Bock Audio specifications.

A switch on the side of the microphone body allows selection of two high-frequency EQ curves, described in the model 151 literature as follows:

Bock Audio

The BOCK 151 offers a “brite/normal” switch which allows for extended high frequency response or a softer, more vintage high frequency response, delivering two sounds in one mic.

All the internal components of the 241, and the entire amplifier circuit, are identical to the Bock 151. The primary difference between these two models is the body and headbasket design. Nonetheless, this is not simply a cosmetic change, because the headbasket imparts its own EQ curve to the microphone. Because the 241 design is more similar to the Bock 251 / Ela M 251 than was the 151, the new mic’s sonic signature is even closer to the 251 than before.

The body and grille of the 241 are imported from China.

Bock Audio 241The mic ships with its power supply and cable, an elastic shockmount, and a wooden storage case.

Permalink: Bock Audio 241

The mic was released in 2011.


Pickup Patterns Pads & Filters
Cardioid (19 mV/Pa; 30 - 18,000 Hz)
Capsule Dimensions Impedance SPL/Noise
Diaphragm diameter: 25mm
200 Ohms (Low) Max SPL: 112 dB
Self-noise: 18.0 dB(A)
Weight Length Max Diameter Interface(s)
694g (24.48oz) 216mm (8.50'') 52mm (2.05'')
  • 3-pin XLR male (1)
Power Specifications
  • Includes tube power supply

Did we get anything wrong on this page? Please let us know!