Viva Egoista STX 300b

The Viva Egoista STX 300B is an electrostatic headphone amplifier in the Egoista family, designed specifically for high-end electrostatic headphones such as STAX and HiFiMan. Built around 300B output tubes, it is engineered to realize the full potential of electrostatic transducers, including deep, realistic bass rarely heard from this class of headphone.

Type and Technology

Single-ended, zero negative feedback, point-to-point wired pure Class A amplifier with 300B output tubes, terminated in five-pin electrostatic headphone connectors. It supports electrostatic headphones from STAX, HiFiMan, and any electrostatic model wired to STAX Pro bias standards.

Sound Character

Effortless, clear, and low in distortion, with a natural tonal balance and ultra-wide dynamic range. Notably, it is designed to produce deep, realistic bass, an area where many electrostatic amplifiers fall short, while preserving the speed and transparency electrostatics are known for.

Build and Finish

Handbuilt Viva chassis with four source inputs, a direct input that bypasses the preamp stage, and dual five-pin electrostatic headphone outputs. The Egoista STX comes in a virtually unlimited array of colors and can be personalized to match your interior; contact us to discuss color options.

Best For

Owners of high-end electrostatic headphones (STAX, HiFiMan, or STAX-bias-compatible models) who want a reference tube energizer with full-range, dynamic sound.

What's in the Box

• Viva Egoista STX 300B electrostatic headphone amplifier
• Tube complement (installed)

Specifications