Headphones amplifiers — Feliks Audio ECHO VIBE

The Echo Vibe is a headphone amplifier from Feliks Audio, built with a moderate power figure suited to a range of headphone impedances. Feliks Audio is a Polish manufacturer with a genuinely serious reputation specifically for tube-based headphone amplification, and the Echo Vibe represents a substantial expression of that broader house engineering philosophy.

Position in line

It sits alongside the Echo Classic in Feliks Audio's headphone amplifier range as a related design. This positioning alongside the Echo Classic suggests Feliks Audio offers a small family of Echo-named tube amplifiers, likely differentiated by specific output tube complement or circuit refinement.

Key specs that matter

Maximum power is 350 mW into 600 ohms, a genuinely healthy figure for a high-impedance load, suggesting a design with real voltage swing available for demanding headphones. Rated bandwidth is 15 Hz to 45 kHz. Distortion is 0.4% at 1V RMS into 300 ohms, a figure entirely typical for a tube-based design measured under these conditions rather than a measurement shortcoming. At 268 x 217 x 118 mm and 3.5 kg it is a substantial chassis, consistent with a genuinely serious tube-based power supply and transformer.

Sound and use context

Expect the open, harmonically rich character typical of a tube headphone amplifier at this power level - Feliks Audio's reputation within the headphone amplifier category rests specifically on delivering a musically engaging, warm tonal character rather than a purely measurement-focused clinical presentation, and the Echo Vibe should reflect that same underlying design brief.

Pairing

The healthy 350 mW into 600 ohms suits high-impedance headphones particularly well, a genuine strength for planar magnetic or high-impedance dynamic designs that some solid-state amplifiers struggle to drive with equal authority.

Alternatives

The Echo Classic sits alongside this model in Feliks Audio's headphone amplifier range as a related design, worth comparing directly with a specialist dealer to understand the specific tube complement and sonic differences between these two closely positioned Feliks Audio amplifiers. Tube replacement and periodic biasing should be factored into the long-term ownership costs of any design of this kind, unlike a solid-state alternative that typically needs no such maintenance. Feliks Audio relatively specialist reputation compared with more mainstream headphone amplifier brands means seeking out independent reviews is worthwhile before committing to a purchase at this level.