Search Microphones

Share This Page

Related Microphones

OmnidirectionalCardioidSuperlux CMH8D

Multi-Pattern Tube Condenser Microphone

The Superlux CMH8D is a dual-pattern large-diaphragm tube condenser.

As part of the CMH8 series, it uses a one-inch, 3 micron true condenser capsule and identical exterior metalwork. The circuitry uses a hard-wired (not socketed) Nuvistor-type tube, with a transformer-coupled output.

A two-position polar pattern switch provides Cardioid or Omnidirectional patterns. Two other switches independently enable a high-pass filter (200Hz) or -10dB attenuation pad.

Sound On Sound - 2001
I tested the CMH8D valve mic alongside my Rode NTK […] The CMH8D sounds as warm and exciting as you’d hope a valve model would, with a slightly throaty and very much ‘in-your-face’ character. My Rode is smoother and less ‘pumped’ sounding, with a slightly more sophisticated quality, to these ears, but I really did like the Superlux for its more aggressive edge.

The CMH8D includes its dedicated power supply (Superlux p/n PS1), HM8 adapter, YA2 threaded adapter, S65 windscreen, HM7C shock mount, and the necessary cables.

The Superlux CMH8D is also known as: CM-H8D.


Pickup Patterns Pads & Filters
Omnidirectional (25 mV/Pa; 30 - 20,000 Hz)
Cardioid (40 mV/Pa; 30 - 20,000 Hz)
  • Pad: -10 dB (Via Switch)
  • Filter: HPF @ 200 Hz (Via Switch)
Capsule Dimensions Impedance SPL/Noise
Diaphragm diameter: 25.4mm
Diaphragm gauge: 3 microns
200 Ohms (Low) Max SPL: 146 dB
Self-noise: 18.0 dB(A)
Weight Length Max Diameter Interface(s)
560g (19.75oz) 200mm (7.87'') 54mm (2.13'')
  • 3-pin XLR male (1)
Power Specifications
  • Includes tube power supply

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