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Thermionic Culture Snow Petrel

Item: REC0015947-000
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Two channels of Class A all-tube amplification, perfect for ribbons and large-diaphragm dynamic drivers, with high-end Sowter t...  All product info

£ 3,453.00
£ 3,445.00 / 1 STÜCK,  incl. VAT, incl. Shipping Costs
or cheap with financing
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Product information - Thermionic Culture Snow Petrel

2 channel tube preamp with extra gain

  • all-tube Class-A preamp
  • extra low noise tubes
  • signal path completely free of semiconductors
  • incredible +75dB gain; optimal for ribbon & dynamic large diaphragm microphones
  • with high quality Sowter input & output transformers
  • O/P trim for pleasant coloration with tube sound
  • ATTEN circuit for deliberate overdriving of the output transformer for additional timbres
  • higher input impedance than usual -> for crystal clear sound
  • input impedance switchable from 850Ω (Lo-Z) to 2400Ω (Hi-Z)
  • -20dB pad & +48V phantom power per channel
  • detented gain and low-cut settings
  • 'HPF' to reduce proximity effect and 'Air' for extra clarity
  • 2 height units (HE) & 19" format

Technical data:

  • HPF: slope of 6dB/octave and -3dB attenuation at the selected frequency.
  • Air: set to 10 results in +5dB at 10kHz with a peak at 22kHz
  • Input impedance: Lo: 850Ω // Hi: 2.2kΩ // Pad: 2.2kΩ
  • Output impedance: @0 Atten: 250Ω // @ -7dB: 700 Ω // @ -15dB: 270 Ω
  • maximum output level: >+26dB
  • power: 30W
  • weight: 6kg

Secret weapon for ribbon microphones

Primarily developed for ribbon microphones, the Snow Petrel from Thermionic Culture delivers up to 75dB of absolutely clean gain. This optimally compensates the known level weakness of ribbon microphones and allows to get the maximum sound out of the microphone. Of course, the Snow Petrel 's range of application is not limited to ribbon microphones. With the settings for low and high impedance (Lo-Z & Hi-Z) as well as the -20dB pad, the Preamp can be excellently adapted to the individual needs of each zuspiel microphone.

Crystal clear sound or custom coloring

The Snow Petrel offers beside an absolutely clean amplification also still the possibility of influencing creatively on the Aduiomaterial. The Low Cut and Air controls can be used to reduce the crosstalk effect or to enhance the high frequencies for more clarity and airiness. With the O/P Trim circuit, slight tube coloration effects of the 2nd harmonic can be realized. It is also possible to achieve saturation effects with the Atten circuit by overdriving the output stage and transformer in a controlled manner.


  • Manufacturer: Thermionic Culture
  • Amplifier principle: Tube
  • Number of channels: 2x2
  • Format: 19"
  • Max. Gain in db: 75
  • Phantom Power: Yes
  • Hi-Z Inputs: 2
  • Highpass filter: Yes
  • Input Impedance (Ohm): 2200
  • Additional functions: Air, Saturation, Ø, Impedance
  • THD+N in %: 0.2
  • Dynamic range in db: 100
  • Transformer balanced: In & Output
  • Transformer manufacturer: Sowter
  • Power Adapter: Yes
  • Digital converter: No
Thermionic Culture Snow Petrel Product ImageThermionic Culture Snow Petrel
£ 3,453.00

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