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Near-/Midfield Monitor
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PIPA Awards 2016
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ADAM Audio A77X Studio Monitor

ADAM Audio A77X

The A77X is a horizontally designed monitor that combines all of the technical innovations in the AX-Series. Due to its powerful, compression-free sound reproduction and excellent radiation characteristics, it is suitable both for nearfield and midfield monitoring.

The special feature of the A77X is its 2 1⁄2-way system. Both 7” woofers start to work together at 38 Hz and at 400 Hz one woofer fades out and only the second woofer continues to operate in the midrange up to 3 kHz. This prevents interferences and possible phase cancellation in the critical midrange. Even though frequency transitions and potential distortions lie outside these areas, the human ear is particularly sensitive to midrange frequencies.

Especially noteworthy in the A77X is the extremely wide stereo foundation and brilliant stereo imaging. Treble and mids are reproduced with three-dimensional realism and the lows are, as expected from a double woofer design, massive without compromising on precision.


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German Handmade Precision X-ART Tweeter

2 x 7“ Woofer (Carbon/Rohacell/Glass fiber)

Amp. Power RMS / Music: 250 W / 375 W

Frequency Response: 38 Hz - 50 kHz (-10 dB)

Max. SPL per pair at 1 m: ≥122 dB

The A77X is no longer being produced. Please have a look at its successor: The ADAM Audio A77H!




ADAM Audio monitors have earned a worldwide reputation as the preeminent tool for sound engineers based on technological innovations that we’ve established in the field of loudspeaker technology.

X-ART Tweeter

ADAM Audio has improved upon the Air Motion Transformer utilizing superior geometries and materials to achieve unprecedented audio fidelity.
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X-ART Driver

A groundbreaking technological innovation with easily discernible superior performance and no technical flaws, the X-ART driver is clearly unequalled in the ...
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A/B Amplifier

We designed our own high frequency power amp to allow the new high frequency unit to live up to its unique talents.
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HexaCone woofers are an integral component in most of ADAM’s monitors/speakers. The core is a honeycomb Nomex structure that makes them ...
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ADAM units use the new technology for both the amp and the power supply section (i.e. no more transformers) combined with state of the art input and filter s...
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So there we have the ADAM A77X: an extremely able active monitor that´s capable of accurately reproducing frequencies from 38Hz to 50kHz in a seemingly effortless manner, even when being run at some pretty serious levels. This all comes with a price tag that actually represents very good value for money, given the level of performance that the ADAM A77X delivers.

Bob Thomas
Sound on Sound

Of particular note was the outstanding stereo imaging and enormous sound stage the A77Xs present. The Adam A77Xs are an outstanding monitoring solution.

Guy Harrison
Audio Technology Magazine

Mixing on the A77X was a pleasure because they didn´t cause fatigue during long sessions and they have no trouble resolving complex mixes. (…) If you are considering the purchase of a pair of monitors in this price range, you really need to hear the A77Xs. They combine all the attributes required for a studio “main” monitor: They can play plenty loud, maintain linearity at a wide variety of volume levels, reveal sufficient information such that they can be trusted for a tracking session, and mixes that are made on them translate well when heard outside of the studio.

Steve La Cerra
Mix Magazine

I like the A77X a lot and they make a refreshing change from the usual mid-priced nearfield speakers.

Stephen Bennett

ADAM Audio A77X in use

Press Reviews

Interface [Dutch]
PDF (153 KB)
Recording Magazine [English]
PDF (1.7 MB)
DrumXound [German] [German]
MIX [English]
PDF (5.9 MB)
Sound & Recording [English]
PDF (130 KB)
Sound & Recording [German]
PDF (1.7 MB)
Sound On Sound [German]
PDF (140 KB)
Sound On Sound [English]
PDF (2.1 MB)
Ryan "Fluff" Bruce [English]
Audio Technology [English]
PDF (92 KB)
MusicTech [English]
PDF (473 KB)
Audiomedia [English]
PDF (117 KB) [English]
John Browne [English]
davespeakmanmusic [English]

Features & Benefits

Product Feature
Benefit to the customer
X-ART tweeter, handmade in Berlin
  • Allows longer operation with fewer signs of fatigue
  • Their breakup is prevented by the folded diaphragms, distortions are effectively reduced to a minimum
  • Advanced dynamic range due to acoustically effective diaphragm surface that is 2.5 times bigger (compared to a classic tweeter according to the piston principle)
The air velocity ratio of 4:1 during the sound generation by folded X-ART membrane

Direct, fast response in the high-range even with complex transients

In-phase, simultaneous operation of the woofers below 400 Hz
  • Dry, unstrained reproduction of the low-range
  • Critical center area is played by a single driver without interference
Ultra-light but extremely dimensionally stable woofer material (Carbon/Rohacell/Glass fiber)

Excellent transient response even at high sound levels without breakup of the diaphragm

Unique, horizontal 2.5-way system with 2 x 7" woofers

Very high resolution of the stereo image and extremely wide stereo base

Spacious bass reflex ports on the front
  • Bass reproduction with very low compression
  • Allows positioning close to walls
Highly efficient PWM amplifier for the woofer coupled with an A/ B amplifier for X-ART tweeter

Low-distortion amplification at both low and high volume levels

Linear frequency response of 38 Hz to 50 kHz (-10 dB)

Unbiased reproduction in a very wide frequency band

Maximum Peak sound pressure per pair in 1 m ≥ 122 dB

Powerful, compression-free sound reproduction even at very high sound levels

Simple, stepless room acoustic adjustments over tweeter gain, low and high shelf filters

Allows optimal adaptation to acoustically difficult listening environments

Analog XLR and RCA inputs

Optimized for balanced and unbalanced line signals

Acoustically optimized cabinet geometry

Reduction of unwanted reflections on the cabinets

Directional sound radiation in vertical plane

Reduction of early reflections on the surfaces of, e.g. mixing consoles, desks, etc.

Volume control and on/off switch on the front

Very easy to use

Suitable for both near- and mid-field applications

Enough headroom for different studio environments

2 years warranty with optional extension to 3 years with the registration of the product

Full repair service if required for 5 years

Technical Data


Basket Ø7" (175 mm)
Voice Coil Ø1.5" (38 mm)
Cone MaterialCarbon / Rohacell / Glass Fiber


Diaphragm Area4 inch² (2420 mm²)
Equiv. Diaphragm Ø2" (56 mm)
Velocity Transform Ratio4:1
Diaphragm Weight0.17 g

Built-in Amplifiers

Amp. Power RMS / Music100 W / 150 W
Amp. Power RMS / Music100 W / 150 W
Amp. power RMS / music50 W / 75 W

Control Options

Input Sensitivity-∞ to +14 dB
High Shelf EQ > 5 kHz±6 dB
Low Shelf EQ < 300 Hz±6 dB
Tweeter Gain±4 dB

Input Connectors

AnalogXLR / RCA

General Data

Frequency Response38 Hz - 50 kHz (-10 dB)
THD 90 dB / 1 m > 100 Hz≤0.5 %
Max. SPL with sine wave acoustic 100 Hz to 3 kHz at 1 m≥114 dB
Max. SPL per pair at 1 m≥122 dB
Crossover Frequencies0.4 / 3.0 kHz
Input Impedance30 kOhm
Weight28.2 lb (12,8 kg)
Magnetically ShieldedNo
Height x Width x Depth9.5" (235 mm) x 21" (530 mm) x 11" (280 mm)
Warranty5 years (2 years warranty plus 3 years optional with product registration)
Delivery ContentsPower cord, manual

Additional information

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