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Erzetich Bacillus


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Erzetich Bacillus

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499,00 € tax incl.

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Precision Headphone Amplifier

Although Bacillus is an entry level headphone amplifier in our program, it is already very capable, with a powerful crystal clear sound - an audiophile grade precision headphone amplifier. It is designed to meet the needs of any music and good-sound lover. For its small, compact and robust chasis it is also very useful as a portable monitor when you need more power in your headphones. This makes it a great tool for the sound professionals on the road, like DJs, musicians, sound engineers, etc. With its elegant industrial design, Bacillus will stand proud on your office desk or monitoring console.

Behind the scenes:

"This was the first project that was succesfully completed in the whole, although it wasn't the first one we started with. The initial prototype really looked cute: small, compact and stylish, with a shiny front acrylic. Initially it was 5 mm shorter, but it was too risky due to the too crowded rear inside part.

Since it was meant to be as compact, portable and small as possible (now, keep in mind that it has an incorporated power supply, huge input capacitors and heat sink), we wanted to name it after something small – a bacteria (lat. Bacillus)."

"Now I can carry a high definition studio in a single bag: a portable computer, studio headphones and Bacillus. I can work on my music in a hotel room without compromising a sound full of details."
Billy-G, musician

"Finally I can HEAR the music."
dr. R. Vidrih, Slovenia


  • WIMA high quality pulse input capacitors 
  • audiophile grade op-amp 
  • double 180 MHz/250 mA Burr-Brown current buffer 
  • Alps Blue Velvet volume potentiometer 
  • no output capacitors 
  • gold plated RCA connectors 
  • silver interconnecting wire on input 
  • on-board 2 x 15 V stabilized power supply


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 %


0.025 %

Power consumption: 

3 W


>102 dB

Power supply input voltage:

230 V/50 Hz or 115 V/60 Hz

(available as a fixed chord or IEC320 C14 connector)

Dimensions (W x H x D): 

110 mm x 64 mm x 160 mm (IEC320 C14 connector version)


780 g


Slightly bright


Warranty: 2 years


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Erzetich Bacillus

Erzetich Bacillus

Erzetich Bacillus