Overview

Electa Amator III is the third-generation, anniversary stand-mount in Sonus faber’s Heritage line, built from solid walnut with marble base and a 28 mm silk-dome tweeter plus 6.5-inch pulp-cone mid-woofer. It targets luxury craft and classic voicing rather than measurement-driven neutrality. Typical US street price is 12,000 USD per pair (stands often bundled or available separately). [3][4]

Scientific Validity

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Independent lab data shows sensitivity ~87.7 dB (2.83 V/1 m) versus the 88 dB spec, but with demanding impedance/EPDR—minimum 3.3 Ω and EPDR dips to 1.6 Ω @116 Hz and 1.9 Ω @610 Hz—making it a tougher-than-average load. On-axis response exhibits a presence-band dip with rising high treble; response errors are ±5.1 dB/±5.4 dB (200 Hz–20 kHz). Bass extension is ~42 Hz (-6 dB). These figures indicate clear coloration versus neutrality norms. [1][2]

Technology Level

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Premium materials and careful cabinetry (solid walnut, marble base, refined bracing), a textile-dome tweeter with DAD, and a traditional 2-way network reflect competent, well-executed classic design. However, there’s little evidence of state-of-the-art acoustic engineering to improve linearity/directivity to modern CTA-2034 targets. [3][6]

Cost-Performance

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Comparator (cheapest equivalent-or-better): Monoprice Monolith Encore B6 (passive 2-way stand-mount). Measured on Klippel NFS with CTA-2034 data, its on-axis/listening-window linearity is markedly tighter (frequency deviation 2.7 dB over 300 Hz–5 kHz; -6 dB ~52.7 Hz) and controlled directivity; user-facing functions match. [5][6] Current market price ≈ 239.99 USD each (≈ 479.98 USD per pair). [7]

CP score (defined formula): 0.04 (cheapest equivalent-or-better ÷ target price), clamped ≤1.0. [10]

Reliability & Support

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Solid timber cabinetry, simple passive topology, established global dealer support, and conventional serviceability suggest above-average longevity. The challenging impedance/EPDR may stress mismatched amplifiers over time, but there are no endemic reliability red flags in the architecture.

Rationality of Design Philosophy

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The voicing intentionally departs from neutrality (presence-band dip, rising treble), prioritizing a house sound and luxury build over transparent reproduction. From a fidelity-first stance, this is a weakly rational trade-off given the measured results and market alternatives that achieve better technical transparency at a fraction of the cost. [1]

Advice

For accuracy-focused listening, this model is poor value and difficult to justify technically. If you admire the craftsmanship, know that you are paying primarily for materials and finish, not best-in-class measurements. Performance-driven buyers should consider pairing a neutral, well-measured stand-mount such as the Encore B6 with suitable amplification and a subwoofer; you’ll obtain higher measured fidelity and easier amplification at ~4 % of the outlay. [5][7]

References

[1] Hi-Fi News, “Sonus faber Electa Amator III Loudspeaker Lab Report,” https://www.hifinews.com/content/sonus-faber-electa-amator-iii-loudspeaker-lab-report, Sep 25, 2019 (review); accessed 2025-08-29. Key conditions: 1 m on tweeter axis; EPDR, on-axis FR, sensitivity.

[2] Hi-Fi News archive list showing review date, “Loudspeakers

Page 12,” https://www.hifinews.com/taxonomy/term-p/719?page=11, shows “Review: Ken Kessler, Lab: Keith Howard

Sep 25, 2019”; accessed 2025-08-29.

[3] Sonus faber, “Electa Amator III — Product Page,” https://www.sonusfaber.com/en/products/electa-amator-iii, accessed 2025-08-29. Specs & design details.

[4] Paragon SNS (authorized dealer), “Electa Amator III,” https://www.paragonsns.com/products/sonus-faber-electa-amator-iii, showing 12,000 USD per pair; accessed 2025-08-29. (Also: Sky by Gramophone, https://skybygramophone.com/products/sonus-faber-electa-amator-iii-bookshelf-speakers-pair, 12,000 USD; accessed 2025-08-29.)

[5] Erin’s Audio Corner, “Monoprice Encore B6 — Klippel NFS Measurements,” https://erinsaudiocorner.com/loudspeakers/monoprice_encore_b6/, May 7, 2022; accessed 2025-08-29.

[6] spinorama.org (CTA-2034 aggregation), “Monoprice Monolith Encore B6 (Erin’s Audio Corner),” https://www.spinorama.org/speakers/Monoprice%20Monolith%20Encore%20B6/ErinsAudioCorner/index_eac-v2-20220507.html, accessed 2025-08-29. Notes: FR deviation 2.7 dB (300 Hz–5 kHz), F-6dB 52.7 Hz.

[7] Monoprice (category listing including Encore B6, Product ID 43150) showing 239.99 USD each, https://www.monoprice.com/p/shop/book-shelf-speakers-01115, accessed 2025-08-29.

[8] Absolute Sounds reprint of Hi-Fi News review (PDF), https://www.absolutesounds.com/pdf/main/press/HFN%20Jul%20Sonus%20faber%20Electa%20Amator%20III%20Reprint-LOW.pdf, accessed 2025-08-29.

(2025.8.29)