Stored Category Comparison

Feliks Echo 2 vs Ferrum OOR

This page compares two published amplifiers profiles using stored summaries, source-attributed scoring, and a single lines-only radar for fast visual difference checks.

Back to Feliks Echo 2Open Ferrum OOR

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Feliks Echo 2
Ferrum OOR

Category Scores

Stored score comparison

Every score is pulled from the stored product intelligence snapshot for this category pair.

AxisEcho 2OORDelta
Bass
7.4
8.7
+1.3
Mids
8.3
8.6
+0.3
Treble
7.4
8.4
+1
Technicalities
7.2
8.5
+1.3
Soundstage
7.9
8.4
+0.5
Value
7.9
7.5
-0.4

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Feliks Echo 2 can only be compared against published amplifiers profiles.

Quick Read

Feliks Echo 2

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.

Ferrum OOR

The OOR is Ferrum's fully balanced, fully analog flagship headphone amp: 8W into 60 ohms, discrete circuitry, and a design philosophy built around its optional HYPSOS hybrid power supply. Headfonics scored it 9.3/10, calling it a very good solid-state amp and preamp alone that becomes a great amplifier with HYPSOS; Headfonia's verdict matches, hearing the power-supply difference as easily audible. Consensus character: powerful, dynamic, and musical solid-state with more soul than measurement-first rivals. The costs are structural: $1,995 for the amp, another $1,195 for the HYPSOS that unlocks its best, and no DAC or features beyond pure amplification.

Feliks • Amplifiers

Feliks Echo 2

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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.

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

Ferrum • Amplifiers

Ferrum OOR

Open page

The OOR is Ferrum's fully balanced, fully analog flagship headphone amp: 8W into 60 ohms, discrete circuitry, and a design philosophy built around its optional HYPSOS hybrid power supply. Headfonics scored it 9.3/10, calling it a very good solid-state amp and preamp alone that becomes a great amplifier with HYPSOS; Headfonia's verdict matches, hearing the power-supply difference as easily audible. Consensus character: powerful, dynamic, and musical solid-state with more soul than measurement-first rivals. The costs are structural: $1,995 for the amp, another $1,195 for the HYPSOS that unlocks its best, and no DAC or features beyond pure amplification.

Strengths

  • 8W into 60 ohms drives essentially any headphone with authority
  • Musical, dynamic solid-state presentation with genuine character
  • HYPSOS power-supply pairing audibly elevates performance

Weaknesses

  • Full potential effectively costs $3,190 with HYPSOS
  • Pure analog amp: no DAC, no digital features
  • Character-first tuning won't satisfy strict neutrality seekers