ADAM Audio A77X Active Studio Monitor

Active Near-Field Monitor

Equipped with the same advanced technologies as the A7X, it therefore is very similar to the two-way speaker. The A77X, however, distinguishes itself by much higher, compression-free maximum sound pressure levels and dynamics. Due to its power and radiation characteristics, it also is perfectly suited for both near- and midfield monitoring.

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£690.00 £575.00
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ADAM’s A77X Active Studio Monitor features all of the same advanced technologies as the A7X but distinguishes itself with superior maximum sound pressure levels and dynamics without risking compression.

As with all models in the AX series, a key component of the A77X is its proprietary X-ART tweeter (standing for ‘eXtended frequency response’) which, thanks to Accelerating Ribbon Technology, can reach up to 50kHz. Furthermore, the X-ART tweeter has higher efficiency and maximum sound levels.

The ADAM A77X’s two 7” woofers are identical to that of the A7X, featuring large 1.5” voice coils and amplifiers powerful enough to sustain incredibly high sound pressure levels and astoundingly deep registers. Its woofers, though, do not cover the same frequency bands. One covers (sub-) bass frequencies up to around 400Hz while the other is responsible for the rest of the midrange.

A dedicated amplifier is given to each driver. The X-ART tweeter has a 50W A/B amp while the bass-/midwoofers are powered by a 100W PWM amp each.

The front panel features a power switch and volume which retains level independently from the on/off switch. Several additional controls sit on the monitor’s rear panel including a high frequency (± 4dB) gain and two shelf filters (high and low frequency). Both XLR (balanced) and RCA (unbalanced) connectors provide excellent compatibility.

It’s a revolutionary formula: 2 x 7 = 77

More Information


  • Number: 2
  • Basket Ø: 7" (175 mm)
  • Voice coil Ø: 1.5" (38 mm)
  • Cone material: Glass fibre/paper


  • Number: 1
  • Type: X-ART
  • Diaphragm area: 4 inch² (2420 mm²)
  • Equiv. Diaphragm Ø: 2" (56 mm)
  • Velocity transform ratio: 4:1
  • Diaphragm weight: 0.17 g

Built-in Amplifiers

  • Subwoofer: 1
  • Type: PWM
  • Amp. power RMS / music: 100 W / 150 W
  • Subwoofer: 1
  • Type: PWM
  • Amp. power RMS / music: 100 W / 150 W
  • Tweeter: 1
  • Type: A/B
  • Amp. power RMS / music: 50 W / 75 W

Control panel  

  • 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        

  • Analog: XLR / RCA
  • Location: Rear

General data

  • Frequency response: 38 Hz - 50 kHz
  • THD 90dB/1m > 100 Hz: ≤0.5 %
  • Long term output: ≥114 dB
  • Max. peak: ≥122 dB
  • Crossover frequencies: 400 / 3000 Hz
  • Input impedance: 30 KOhm
  • Magnetically shielded: Optional
  • Warranty: 5 Years

Dimensions and Weight

  • H235 mm x 530 mm x 280 mm (H) x (W) x (D)
  • Weight: 12.8 kg