Erzetich – Bacillus II

The Bacillus II is Erzetichs entry-level headphone amplifier, yet it’s designed for those who want more from a compact setup. Outfitted with high-grade input capacitors and premium op-amps, it delivers a sound profile that combines warmth with speed, punch, and impressive detail.

Versatile enough to pair with headphones of any impedance, the Bacillus II ensures a smooth and dynamic listening experience. With an exceptional ability to reveal subtle nuances, it distinguishes tonal variations and enhances details, capturing the richness in every note that many amplifiers miss.

Its unique design—featuring a large, original volume knob, an angled top, and wooden side panels—makes the Bacillus II a stylish addition to any desk.

The Bacillus Tilia headphone amplifier earned a dedicated following for its powerful, detailed sound. Building on its legacy, Bacillus II introduces upgraded electronics and a refined design. While we’ve replaced the fully wooden chassis with a durable metal body, we’ve kept the wooden side panels to honor its classic look.

Bacillus II (along with Bacillus II +)is also designed to visually complement our flagship models, Deimos and Scylla, creating a cohesive and stylish lineup.

Technical Specifications

• Headphone impedance: 8-600 ohm
• Output power: 157 mW
• Frequency response: 2 Hz – 800 kHz, -1dB
• Power consumption: > 3 W
• Power supply input voltage: 230 V/50 Hz or 115 V/60 Hz
• Dimensions (W x H x D): 145 mm x 70 mm x 180 mm
• Weight: 1130 g
• Character: Silky neutral, slightly warm