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Blue Cactus Tube Mic

Large Diameter Class A Discrete multi-pattern (9) Tube Microphone and storage box

Cactus - Angle

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  • Cactus - Angle
  • Cactus - Front
  • Cactus - Included Shock Mount
  • Cactus - Included Power Supply
  • Cactus - Inside the Cactus
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Product Description for the Blue Cactus Tube Mic

The Cactus delivers a commanding, intimate presence with larger-than-life detail that is reminiscent of the world’s finest and most well respected vintage designs. At a distance, the Cactus’ B7 capsule delivers every nuance in the room, with finely focused resolution and clear, musical frequency response to the extremes of the audible spectrum. Up close, with its detailed highs and smooth midrange, the nine-pattern Cactus excels at delivering a vocal or solo track right to the front of the mix. The amplifier is a transformer-balanced single vacuum tube sub-miniature pentode in a triode mode, along with the highest quality hand-selected electronic components to insure absolute minimum noise and distortion.

This premium large-diaphragm, multi-pattern tube microphone was made the old- fashioned way, without compromise. In the tradition of the world’s best (and most expensive) vintage vocal microphones, the Cactus has been designed to provide commanding, intimate presence and larger-than-life detail in a wide variety of professional recording applications. At a distance, and in omnidirectional and figure of eight patterns, this microphone delivers every nuance in the room, with finely focused resolution and clear, musical frequency response out to the extremes of the audible spectrum. But this is also a Cactus you’ll definitely want to get close to! With its detailed highs, smooth midrange, and minimized proximity effect (a bass boost inherent in all unidirectional mics), the cardioid Cactus excels at delivering a vocal or solo track right to the front of the mix where it belongs. When processed with limiting and/or compres- sion, as is standard practice for most pop vocals, tracks recorded with the Cactus will be free of pumping and low end thumps.

The basic Cactus microphone system includes the BLUE Series One shockmount and wire mesh pop filter assembly, a Champagne tube microphone cable, and the model 9610 power supply with adjustable pickup pattern control, shipped in a blue velvet-lined ATA flight case approved for the utmost protection. In order to familiarize yourself with the specialized and unique features of the Cactus microphone, please take the time to read this manual, and be sure to try the suggested recording tips. The Cactus amplifier utilizes a single hand-selected sub-miniature vacuum tube. This tube circuit is Class A and fully discrete, mean- ing that the sound which arrives at the diaphragm of the BLUE capsule is transduced (converted to electrical energy) as accu- rately as possible, with no integrated circuits (a.k.a. “IC’s”) in the signal path. To this end, the Cactus utilizes electronic components of the highest quality (such as expensive metal-film resistors and a custom-built transformer), and there are no pad or low-cut filter switches in the microphone circuit. In short, this is a signal path of the highest possible quality, allowing the user to get the maxi- mum benefit out of the multi-pattern capsule created by BLUE.


  • Transducer Type: Vacuum Tube Condenser
  • Polar Patterns: Multipattern
  • Frequency Response: 20Hz - 20kHz
  • Sensitivity: 18.0mV/Pa at 1kHz (1 Pa = 9 4dB SPL)
  • Output Impedence: 50Ohm
  • Rated Load Impedance: Not less than 1kOhm
  • Maximum SPL: 134 dB SPL (2.5kOhm, 0.5% THD)
  • S/N Ratio: 84 dB-A (IEC 651)
  • Noise Level: 10 dB-A (IEC 651)
  • Dynamic Range: 124 dB ( @ 2.5kOhm)
  • Power Requirement: Cactus Power Supply Unit 115/230 VAC, 50/60 Hz
  • Weight: 800g
  • Dimensions: 235mm x 50mm x 30mm
Brand Blue
Weight 1.3200
Dimensions (WxHxD) NA

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