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Description
Adam A77H Active Speaker (Single)The A77H is a true three way midfield monitor that capitalizes on the latest ADAM Audio technologies to deliver a rich, spacious, and enveloping sound. NOTHING COMPARES Incorporating two 7 inch woofers, a midrange driver, and ADAM Audios X ART tweeter, the A77H delivers an ultra wide frequency range. The addition of the midrange driver helps produce clear sound in the most sensitive range of human hearing. Rotatable HPS waveguide technology and
The A77H is a true three-way midfield monitor that capitalizes on the latest ADAM Audio technologies to deliver a rich, spacious, and enveloping sound.
NOTHING COMPARES
Incorporating two 7-inch woofers, a midrange driver, and ADAM Audio’s X-ART tweeter, the A77H delivers an ultra-wide frequency range.
The addition of the midrange driver helps produce clear sound in the most sensitive range of human hearing. Rotatable HPS waveguide technology and onboard DSP allow you to tune the sound for your precise requirements.
German Handmade Precision X-ART Tweeter with rotatable HPS waveguide
- 3.5" DCH Midrange Driver
- 2 x 7'' Woofer (Multi-Layer Mineral)
- Total Peak Amp. Power: 340 W
- Frequency Response @ -6 dB: 34 Hz – 45 kHz
- Max. peak SPL per speaker at 1 m: 106 dB SPL
Technical Data
View the specifications of the ADAM Audio A77H by clicking each drop-down section.
General Data
- Display: Front panel multi-color LED
- Cabinet Design: Dual front ported
- Cabinet Material: Vinyl wrapped MDF and painted MDF front panel
- Mounting options: Threaded inserts on the bottom of the cabinet (4 x M8)
- Power consumption (max, idle, sleep): 220 W, 15 W, 3.5 W
- AC Input Voltage: 100 – 240 V, 50/60 Hz
- Power Rating: 500 W max.
- Operating Conditions: -10° C to +40° C (+14° F to +104° F); <75 % RH, non-condensing
- Weight: 17.1 kg (37 lb 11 oz)
- Dimensions (Height x Width x Depth): 236 mm x 531 mm x 350 mm (9 1/4″ x 20 7/8″ x 13 3/4″)
- Warranty: 5 years (2 years warranty plus 3 years optional with product registration)
- Delivery Contents: A77H loudspeaker, power cable, Quick Start Guide
Acoustics
- Frequency Response @ -3 dB: 37 Hz – 41 kHz
- Frequency Response @ -6 dB: 34 Hz – 45 kHz
- Crossover Frequencies: 400 Hz, 3.0 kHz
- Max. peak SPL per speaker at 1 m (sine bursts): 106 dB SPL
- Max. peak SPL per speaker at 1 m (IEC-weighted noise): 118 dB SPL
- Max SPL in full space at 1 m with sine bursts (average 100 Hz to 6 kHz) @ 3% THD (RMS): 105 dB SPL
- Max SPL in full space at 1 m with sine bursts (average 100 Hz to 6 kHz) @ 3% THD (Peak): 108 dB SPL
- Max SPL in full space at 1 m with sine bursts (average 50 Hz to 100 Hz) @ 3% THD (RMS): 99 dB SPL
- Max SPL in full space at 1 m with sine bursts (average 50 Hz to 100 Hz) @ 3% THD (Peak): 102 dB SPL
- Dolby DARDT max SPL in full space: 118 dB SPL
- Dolby DARDT max SPL in full space (bass managed): 120 dB SPL
Amplification
- Woofer
- Amplifier Type: PWM
- Peak (10% THD, limiter deactivated): 250 W
- RMS (1% THD, limiter deactivated): 200 W
- Midrange
- Amplifier Type: Class A/B
- Peak (10% THD, limiter deactivated): 70 W
- RMS (1% THD, limiter deactivated): 55 W
- Tweeter
- Amplifier Type: Class A/B
- Peak (10% THD, limiter deactivated): 20 W
- RMS (1% THD, limiter deactivated): 15 W
Drivers
- Woofer
- Basket Diameter: 2 x 7″
- Voice Coil Diameter: 1.5″ (38 mm)
- Cone Material: MLM
- Midrange
- Type: Dome Cone Hybrid (DCH)
- Basket Diameter: 3.5″
- Voice Coil Diameter: 1.3″ (33 mm)
- Cone Material: MLM
- Tweeter
- Type: X-ART
- Diaphragm Area: 4 inch² (2420 mm²)
- Equivalent Diaphragm Diameter: 2″ (56 mm)
- Velocity Transform Ratio: 4 to 1
- Diaphragm Weight: 0.17 g
- Waveguide: HPS (rotatable)
- Waveguide Dispersion: 120° horizontal, 70° vertical
Amplification
- Woofer
- Amplifier Type: PWM
- Peak (10% THD, limiter deactivated): 250 W
- RMS (1% THD, limiter deactivated): 200 W
- Midrange
- Amplifier Type: Class A/B
- Peak (10% THD, limiter deactivated): 70 W
- RMS (1% THD, limiter deactivated): 55 W
- Tweeter
- Amplifier Type: Class A/B
- Peak (10% THD, limiter deactivated): 20 W
- RMS (1% THD, limiter deactivated): 15 W
Signal Processing
- AD converter: 24-bit
- Internal sample rate: 96 kHz
- Delay range, resolution: 0 – 10 ms, 0.1 ms
- Protection: Independent peak and thermo limiters for each driver, and amplifier thermo limiters
Control Options [via Network]
- Networking Connector: RJ45
- Connection Type: Ethernet
- Communication Protocol: OCA using standard IP data
- Control Software: A Control (Windows and MacOS available)
- Room Adaption Options: Backplate, Extended, Sonarworks SoundID Reference integration
- Advanced Room Adaptation: 6 x PEQ, Level, Delay
- Third-party Calibration Compatibility: Import from Sonarworks SoundID Reference
Control Options [via Backplate]
- Input Sensitivity: 0 dBu = 100 dB SPL at 1 m @ 0 dB level setting
- Level: -12 dB to +12 dB
- Input Selection: Balanced, unbalanced
- Voicings: Pure, UNR
- Room Adaption:
- Bass: +2, 0, -2, -4 dB
- Desk: 0, -2, -4 dB
- Presence: +1, 0, -1 dB
- Treble: +1.5, 0, -1.5 dB
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
Great tee
Size: X-Large, Color: Medium Grey Heather
It’s a nice cotton material…not thin, just perfect. After washing, it also kept its shape.
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Reviewed in the United States on February 18, 2026
★★★★★ 5
Loooove these shoes!
Size: 7.5 Wide, Color: Chestnut Brown Faux Leather
I have these in several colors, and they’ve become a true staple in my wardrobe.
The Amazon Essentials Women's Belice Comfortable Slip-On Ballet Flats are exactly what I look for in an everyday shoe—simple, versatile, and comfortable right out of the box. The slip-on design makes them super convenient for busy days, and they pair effortlessly with everything from jeans to dresses to work outfits.
They’re lightweight but still feel supportive enough for all-day wear, and I appreciate that they don’t require a break-in period. The fit is generally true to size, and the variety of colors makes it easy to stock up and rotate depending on the outfit.
Overall, these are reliable, easy-to-wear flats that offer great value for the price. Not flashy, just consistently comfortable and practical—which is exactly why I keep coming back to them.
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Reviewed in the United States on June 5, 2026
★★★★★ 5
Has the look that they should cost more.
Size: 11.5 Wide, Color: Dark Turquoise
Comfortable and the fit is very comfortable. Looks great and extremely comfortable. Soft and light weight. Easy to put on. Sizing was perfect and the wide width is truly a wide. I’m coming back for more colors.
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Reviewed in the United States on June 1, 2026
★★★★★ 4
Good at price
Size: 9 Wide, Color: Sand
Fit a little small at my big toe but otherwise fit well. Heel rubbed slightly first 5 hour wear but no blister.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Lightweight comfortable at a good price!
Size: 10.5, Color: Navy
These shoes are perfect. The color matches my navy outfits as well as my denim. They are comfortable and they look great. They are easy to pack lightweight and a great value.
I am extremely satisfied and highly recommend!
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Reviewed in the United States on June 3, 2026