Feliks • Amplifiers
Feliks Echo 2
Universal Summary
The Echo 2 (since renamed Echo Classic in Feliks Audio's lineup) is the Polish builder's entry OTL tube amplifier: hand-made 6N6P/ECC85-family tube stages, around 350mW of output, and the warm, euphonic OTL presentation the line is known for. Approved coverage of the Echo platform (the original Echo review and the Echo Vibe offshoot, which earned Headfonia's Highly Recommended award for boutique-grade quality) consistently lands on the same verdict: an affordable, beautifully built gateway into real tube sound, best matched with high-impedance dynamics. The structural caveats define it: OTL topology means low-impedance headphones and IEMs are poor matches, output power is modest, and detail-first listeners will find it deliberately romantic. Note: this dossier leans on Echo-line coverage, since the Echo 2 revision itself lacks a dedicated approved-site review.
Sources
2
Research Version
manual-dossier-v1
Comparison Ready
Snapshot available
Strengths
- Genuine hand-built OTL tube sound at an entry-tier price
- Warm, euphonic, fatigue-free presentation ideal for long sessions
- Boutique Polish build quality praised across the Echo line
Weaknesses
- OTL topology mismatches low-impedance headphones and IEMs
- ~350mW output limits it to easier, high-impedance loads
- Romantic tuning trades away analytical detail on purpose
Best For
- High-impedance dynamics: HD600-family, Beyerdynamic 600-ohm sets
- First tube amp buyers wanting the real OTL experience
- Relaxed evening listening over critical analysis
Overview
What the research says
The Echo 2 (since renamed Echo Classic in Feliks Audio's lineup) is the Polish builder's entry OTL tube amplifier: hand-made 6N6P/ECC85-family tube stages, around 350mW of output, and the warm, euphonic OTL presentation the line is known for. Approved coverage of the Echo platform (the original Echo review and the Echo Vibe offshoot, which earned Headfonia's Highly Recommended award for boutique-grade quality) consistently lands on the same verdict: an affordable, beautifully built gateway into real tube sound, best matched with high-impedance dynamics. The structural caveats define it: OTL topology means low-impedance headphones and IEMs are poor matches, output power is modest, and detail-first listeners will find it deliberately romantic. Note: this dossier leans on Echo-line coverage, since the Echo 2 revision itself lacks a dedicated approved-site review.
Visible Sources
Approved source material
Feliks Echo OTL Tube Headphone Amp — Head-Fi Showcase
Head-Fi member reviews of the Echo OTL line echo the professional take: lush, beautifully made, high-impedance-first.
Feliks Audio Echo Review — Headfonics
Headfonics reviews the Echo platform the Echo 2 revises: an entry-level hand-built OTL tube amplifier praised as an affordable gateway into tube sound.
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Reddit Lens
Community highlights
- Community sentiment treats the Echo line as the affordable European answer to entry tube amps: lush with the right headphones, wrong tool for IEMs.
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