sE Electronics Gemini II Dual Tube Large Diaphragm Condenser Microphone



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The sE Gemini II is the larger-than-life answer to your vocal tracking needs. Incredibly huge, detailed, and intimate sound – classic tube sound meets modern precision.


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sE Electronics Gemini II 

sE's dual-tube condenser mic, for truly massive vocals 

Dual-tube Cardioid Condenser Microphone with 12AX7 Input Tube and 12AU7 Output Tube 

The sE Gemini II is the larger-than-life answer to your vocal tracking needs. Incredibly huge, detailed, and intimate sound – classic tube sound meets modern precision.

The Gemini II dual valve microphone is a no-holds-barred piece of microphone history.

The dual valve design means pure valve warmth from the 12AX7 input valve, coupled with a 12AU7 valve on the output stage.

The result is an incredibly large, detailed, and intimate sound – reminiscent of the classic valve microphones from decades ago, but with a thoroughly modern twist.


  • Dual-tube design
  • 12AX7 at input stage
  • 12AU7 at output stage
  • Brings you best of classic tube mic designs with solid state-style top-end
  • 20 Hz-20 kHz Frequency Response 


Most microphones use a transformer to optimise the mic's output impedance and couple the mic to the mic preamplifier.

With the Gemini II, this optimisation is accomplished with a second vacuum tube, negating any high-frequency rolloff typically incurred with a transformer.

This provides the Gemini II with a sparkling, pristine high-end typically only found in the most expensive solid-state microphones, while maintaining the rich, thick tonality of a tube mic. 

Not just for vocals, the bass cut filter and -10 dB pad make the Gemini useful for loud and heavy sources like drum room mics and booming timpani.


The Gemini II has a 1/4” capsule that is handcrafted and individually tuned in our very own factory.

Thanks to a larger-than-life capsule, true condenser technology and ultra-precision parts, the Gemini II delivers a massive sound right out of the box.

In addition, the Gemini II’s hand-made metal housing and gold-sputtered diaphragms, ensure maximum reliability in any and all sonic settings.

The Gemini II comes packaged in a wooden presentation box next to its custom shockmount and robust power supply, all within a secure and solid flight case.


  • Capsule Type: Hand-Crafted True Condenser
  • Diaphragm: 35 mm Gold/Mylar
  • Directional Pattern: Cardioid
  • Frequency range: 20 Hz - 20 kHz
  • Impedance: 200 Ohms
  • Sensitivity: 40 mV/Pa (-28 dB)
  • Max SPL: 135/145 dB (0/-10 dB pad) (0.5% THD @ 1 kHz)
  • Signal to Noise Ratio: 81 dB
  • Self Noise: 13 dB(A)
  • Pass Filter Switch: 150 Hz
  • Pre-attenuation Pad: -10 dB
  • Power Requirement: Dedicated PSU (included)
  • Weight (mic): 1180 grams
  • Weight (PSU): 1970 grams
  • Tube complement: 1x 12AX7/ECC83, 1x 12AU7/ECC82
  • Connector: XLR3F from PSU

For more information, Click Here to visit the Manufacturer's Website


Brand sE Electronics
Unit Of Measure ea

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