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Small, compact and robust, the Bacillus is a precision grade headphone amplifier that comfortably adapts to any impedance headphones. The bright profile is quick in transitions and urges a direct sound, most notably in rock genres. But the low distortion also adapts quickly to acoustic and delivers a very realistic and intimate experience. All in all, Bacillus is an impressive performer and thanks to its diminutive size is an ideal road companion for travelling sound professionals. The Bacillus might be our entry-level headphone amplifier, but on looks and performance you could be forgiven for thinking this elegant headphone amp is among our high-end range – it’s only our generous price tag that gives the game away. 




  • 5 years manufacturer warranty
  • WIMA high quality pulse input capacitors
  • audiophile grade op-amp
  • double 180 MHz/250 mA Burr-Brown current buffer
  • Alps Blue Velvet volume potentiometer
  • gold plated RCA connectors
  • silver plated interconnecting wire on input
  • on-board 2 x 15 V stabilized power supply
  • robust aluminum chassis 

Erzetich Bacillus Headphone Amp

  • Technical specification


    Headphone impedance: 8-600 ohm
    Output power: 181.5 mW (8 ohm)/161 mW (600 ohm)

    Frequency response: 3 Hz-500 kHz, -1dB

    THD (1 kHz): 0.0003 %

    IMD: 0.025 %

    Power consumption:> 3 W

    SNR: >102 dB

    Power supply input voltage: 230 V/50 Hz or 115 V/60 Hz

    Dimensions (W x H x D): 110 mm x 64 mm x 180 mm

    Weight: 850 g

    Character: Slightly bright 

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