Overview

A77H is ADAM Audio’s A-Series three-way midfield monitor with dual 7-inch woofers, a 3.5-inch midrange, and the handmade X-ART tweeter in a rotatable HPS waveguide. It adds Ethernet-controlled DSP via A Control and native Sonarworks SoundID integration for room-adaptive voicings/EQ. Manufacturer specs: frequency response @ ±3 dB 37 Hz-41 kHz (±6 dB 34 Hz-45 kHz); max SPL in full space at 1 m with sine bursts (avg. 100 Hz-6 kHz) @ 3% THD 105 dB SPL; max peak SPL per speaker 106 dB; IEC-weighted noise 118 dB. [1][2]

Scientific Validity

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Public third-party full spin/room-independent datasets for A77H remain limited; therefore we reference clearly stated manufacturer measurements and test conditions. ADAM publishes 37 Hz-41 kHz (±3 dB) bandwidth and 105 dB SPL @ 3% THD (avg. 100-6 kHz, full space, 1 m) with additional peak/IEC figures; crossover points are 400 Hz / 3.0 kHz. These are relevant, audibility-linked metrics with conditions disclosed. Score is 0.7, reflecting solid published performance but scarce independent verification at this time. [1][2]

Technology Level

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Tri-amped Class D platform with per-band amps, Ethernet control, firmware upgradability, and on-speaker Sonarworks filter loading. The X-ART tweeter (Air Motion Transformer family) employs a folded diaphragm with a documented 4:1 air-velocity transform, aiding HF headroom/dispersion when paired with the HPS waveguide. Integration depth (A Control, native SoundID) and modern DSP toolchain justify a high score. [3][4][5][6]

Cost-Performance

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Current market pair price (denominator): 2,999.98 USD (pair). [7][8]

Cheapest equal-or-better alternatives (examples, pair pricing):

• JBL 708P — self-powered 2-way with published >108 dB continuous / >114 dB peak (80 Hz-20 kHz, 1 m) and broad bandwidth; 3,998.00 USD (pair). [9][10]
• Neumann KH 310 A — 3-way; 110.3 dB SPL @ 3% THD (100-6 kHz, full space, 1 m); 4,998.00 USD (pair). [11][12]

Both meet or exceed user-facing functionality (active, high output, wide bandwidth; DSP/EQ available in ecosystem) and measured output; neither is cheaper than A77H at pair pricing. Therefore, per policy, no cheaper equal-or-better option exists as of this writing, so CP = 1.0. [7][9][11][10][12]

Reliability & Support

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Warranty is 2 years extendable to 5 years upon registration for A-Series; ADAM maintains ongoing firmware/A Control updates and post-warranty support materials. The mature A-Series DSP platform plus extended coverage supports a high score. [13][14][4]

Rationality of Design Philosophy

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Design choices prioritize measurable outcomes (FR control, SPL/THD at declared conditions, dispersion via HPS, room-tunable voicings, on-speaker SoundID). Investment targets performance and workflow rather than cosmetic mass or mystical claims, aligning with a data-driven ethos. [1][3][4][5]

Advice

A77H suits midfield distances where you need high headroom and room-adaptive neutrality from a compact three-way. Use PURE voicing for critical work; address placement effects via back-plate EQ/A Control, and consider on-speaker SoundID when treatment is constrained. If you need still higher output or a different calibration ecosystem, JBL 7-Series or Neumann KH Series are viable—but costlier—alternatives.

References

[1] ADAM Audio — A77H product page (FR/SPL with test conditions). https://www.adam-audio.com/en/a-series/a77h/ (accessed 2025-08-26).
[2] ADAM Audio Shop — A77H (spec detail incl. SPL metrics). https://us.adam-audio.com/products/a77h (accessed 2025-08-26).
[3] ADAM Audio — X-ART Tweeter technology. https://www.adam-audio.com/en/technology/x-art-tweeter/ (accessed 2025-08-26).
[4] ADAM Audio — A Control remote software. https://www.adam-audio.com/en/technology/a-control-remote-software/ (accessed 2025-08-26).
[5] Sonarworks — A-Series native SoundID integration. https://www.sonarworks.com/soundid-reference/integrations/adam-audio (accessed 2025-08-26).
[6] ADAM Audio — S-/X-ART pages (4:1 velocity transform evidence). https://www.adam-audio.com/en/sx-series/s1x/ (accessed 2025-08-26).
[7] Sweetwater — A77H pair price. https://www.sweetwater.com/store/detail/A77HPair–adam-audio-a77h-7-inch-powered-studio-monitor-pair (accessed 2025-08-26).
[8] Sweetwater — A77H product page (shows pair pricing). https://www.sweetwater.com/store/detail/A77H–adam-audio-a77h-7-inch-powered-studio-monitor (accessed 2025-08-26).
[9] JBL Professional — 708P specs (SPL/bandwidth). https://jblpro.com/en-US/products/708p (accessed 2025-08-26).
[10] Sweetwater — 708P pair price. https://www.sweetwater.com/store/detail/LSR708Ppair–jbl-708p-7-series-8-inch-powered-studio-monitor-pair (accessed 2025-08-26).
[11] Neumann — KH 310 A technical data (110.3 dB @ 3% THD). https://www.neumann.com/en-us/products/monitors/kh-310-a (accessed 2025-08-26).
[12] Sweetwater — KH 310 pair price. https://www.sweetwater.com/store/detail/KH310Pr–neumann-kh-310-8.25-inch-3-way-powered-studio-monitor-pair (accessed 2025-08-26).
[13] ADAM Audio — Warranty terms (extend to 5 years). https://www.adam-audio.com/en/warranty-terms/ (accessed 2025-08-26).
[14] ADAM Audio (US) — 5-Year warranty program. https://us.adam-audio.com/5-year-warranty (accessed 2025-08-26).

(2025.8.25)