Feliks Echo 2 vs Topping A70 Pro

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.

Topping A70 Pro

Approved coverage consistently paints the A70 Pro as a measurement-led powerhouse that still manages to feel practical in a real setup. Headfonia focuses on the new T’ang-ku-la module, huge power reserves, low noise, balanced architecture, and expanded feature set, while Head-Fi coverage emphasizes flagship-level amp ambition, plentiful connectivity, and strong preamp behavior. Bloom’s product notes reinforce the same idea: serious dynamic range and headroom under $500. The obvious caveat is that it is overkill for many users, especially sensitive-IEM listeners, but for desktop headphone duty it looks like one of the strongest value plays in the segment.