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Authorized dealers for Avantgarde Acoustic Opus 1

  • The ASOC Gallery of Fine Audio — in-store — Stratford, Ontario, Canada (website)
  • Alpha High End — online and in-store — Brasschaat, Vlaams Gewest, Belgium (website)
  • American Sound — in-store — Richmond Hill, Ontario, Canada (website)
  • Audio Concept - Luxembourg — in-store — Gare, Luxembourg, Luxembourg (website)
  • Audio Gallery — online and in-store — Las Rozas de Madrid, Comunidad de Madrid, Spain (website)
  • Audio Revolutions — in-store — Khwaeng Thung Phaya Thai, Krung Thep Maha Nakhon (website)
  • Audiogears — in-store — Casalecchio di Reno, Emilia-Romaña (website)
  • Auditorium — in-store — Hamburg-Mitte, Hamburg, Germany (website)
  • Aug & Ohr — in-store — Zürich, Zürich, Germany (website)
  • AURA HIFI — in-store — Stadtbezirke II, Nordrhein-Westfalen, Germany (website)

and 30 more verified dealers

Avantgarde Acoustic Opus 1 #1
Avantgarde Acoustic Opus 1 variant 1
Avantgarde Acoustic Opus 1 variant 2
Avantgarde Acoustic Opus 1 variant 3
Avantgarde Acoustic Opus 1 variant 4
Avantgarde Acoustic Opus 1 variant 5
Avantgarde Acoustic Opus 1 variant 6

Avantgarde Acoustic Opus 1

The Opus 1 refreshes horn listening with revealing inner detail, expansive frequency extension and the unmistakable immediacy of a horn-loaded design. Part Time Audiophile finds this active two-way reaches further at both extremes than classic horn rivals, making it a compellingly modern route to vivid, full-range-scale sound.

View at Avantgarde Acoustic
Specifications10 reviews & sources

WATT RECOMMENDS

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81/100
Rating for Opus 1

Nicely Roasted

Sound Quality

81/100

Build Quality

75/100

Value for Money

85/100

Pros

Combines classic horn character with greater inner detail.

Offers stronger low- and high-frequency extension than traditional horn-loaded designs.

WATT RECOMMENDS

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What Reviewers Are Saying

"The Avantgarde Acoustic Opus One retains the fundamental sound of a classic horn-loaded transducer, but with more inner detail and more extension at the frequency extremes."

— Part Time Audiophile

SOUND QUALITY PERFORMANCE 81/100

The available review finds the Opus 1 recognisably horn-like, while crediting it with greater inner detail and stronger extension at both frequency extremes than traditional horn designs. It offers encouraging evidence of clarity and range, but says little about imaging, dynamic behaviour, tonal balance through the midrange, or setup sensitivity.

Bass

84/100

Part Time Audiophile reports more extension at the frequency extremes than is typical of classic horn-loaded designs, which supports a positive view of the low end. The review does not describe bass depth, texture, room interaction, or control in detail.

Mid

82/100

The reviewer hears greater inner detail from the Opus 1, suggesting a more revealing presentation than conventional horn speakers. There is little direct discussion of vocal timbre, tonal warmth, or coherence around the crossover region.

Treble

85/100

The review specifically praises improved high-frequency extension and greater inner detail. It does not address whether the treble remains consistently smooth or forgiving with brighter recordings.

Soundstage Imaging

75/100

The available review does not discuss stage width, depth, image focus, or placement behaviour. Buyers looking for evidence about spatial performance will need more listening reports.

Dynamics

75/100

The review identifies the speaker's classic horn character but provides no direct account of transient impact, large-scale swing, or composure at high volume. Its dynamic character is therefore not well documented in the supplied coverage.

Assessments of Build Quality, Usability, and Overall Propositions.

Build Quality

75/100

The supplied review offers no direct assessment of cabinet finish, fit and finish, hardware, or long-term durability. Product information lists MDF and aluminium construction, adjustable spikes, and a substantial 39 kg enclosure, but reviewer commentary on execution is absent.

Value for Money

85/100

At $18,500, the Opus 1 sits in a specialist high-end active loudspeaker segment. None of the supplied reviews directly assess whether its performance, amplification, and horn design justify that asking price against competing speakers.

Reviews & Sources

Professional reviews and sources for this product's Watt'n Potatoes analysis.

Online Reviews & Mentions

YouTube Reviews

Forum Mentions

No forum mentions found yet

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Specifications

Frequency Range
35 - 20,000 Hz
Crossover frequency
700 Hz
Recommended Room size
>15 sqm
Number of ways
2-way
Bass reflex layout
large port, rear firing
Mid-high layout
sperical horn loading
Material
MDF & Aluminum
Customizing
matt white & silver anodized, matt black & black anodized
Footing
POM gliders, adjustable spikes
Driver size
10", die cast basket
Number of drivers
1
Driver impedance
8 Ohm
Voice coil diameter
3"
Membrane
concave paper cone, 2-wave folded surround
Power handling
350 Watt
Driver size
1" compression driver
Diaphragm
Ring radiator
Diaphragm material
polyester
Efficiency
103 dB/W/m
Power output, bass
250 W @ 8 Ohm
Power output, mid-high
10 W AB-mode (1 W Class-A)
Mid-high crossover
12 dB/Oct.
Bass-mid crossover
digital/DSP
DSP bass adjustment
rear control buttons
Line level signal input
1 x XLR (10 kOhm)
Trigger input
12 VDC
Height
110 cm (spikes + 2.5 cm)
Width
35 cm (32.5 cabinet only)
Depth
36 cm
Standard back tilt (without spikes)
2.7° (adjustable by spikes)
Weight
39 kg
Built-in Power Amplifier

Manufacturer's Description — Avantgarde Acoustic

Compact. Made Huge. OPUS 1 A NEW DIMENSION OF AVANTGARDE What if the huge musical presence of an Avantgarde horn system could live inside the most compact speaker we have ever built? It does. Meet OPUS 1. horn-loaded high-end active system smaller than the average Avantgarde Systems years of experience in horn and amplifier engineering Precision from Odenwald. Engineered to Last. When you choose Avantgarde, you expect a horn system built to stand the test of time. Horn systems are, by nature, the most efficient and sustainable way to transform the energy of music into sound. We follow the same principle in our engineering: the components that matter are crafted to last for decades, while fast-moving technologies like streamers remain external – easy to upgrade, and independent of the loudspeaker. Hand-built in the Odenwald, where things are still made with patience, intention, and a belief in durability, OPUS 1 becomes a long-term companion – engineered to perform far beyond ordinary product cycles. engineered, assembled & calibrated in our manufactory in the Odenwald years designed service life, independent of fast-evolving electronics A new dimension of a full-range system by Avantgarde OPUS 1 is the first Avantgarde system built around a single wide-band horn: a 13.8-inch spherical wave geometry capable of reproducing the entire critical midrange and high-frequency spectrum from 700 to 20,000 Hz, accompanied by a 10" bass driver. By concentrating the musical core into one horn, we eliminate crossover transitions in the most sensitive bandwidth, resulting in seamless coherence, sharp transient response, and a presentation that feels alive, direct, effortless. wide-band spherical horn single-horn mid & high performance horn efficiency – huge sound from minimal power Huge Bass. Minimal Footprint. You want bass that’s clean, deep, and physical – the kind that turns sound into presence. That’s exactly what the OBM10 driver was created for. Its 10″ inverse natural-fiber-cone construction delivers speed and impact, the dedicated 250-watt amplifier provides authority, and the optimized port design keeps everything tight, tuneful, and room-friendly. This is low end – the Avantgarde way. low-mid driver with inverse natural-fiber-cone dedicated bass amplification A High-End Active System. Perfectly Integrated. High-end performance is never accidental – it happens when every part of a system works as one. That’s the principle behind the integrated amplification inside OPUS 1. Engineered in-house by the minds behind our celebrated amplifier innovations, every stage is precisely tuned to the acoustic behavior of the speaker. The result is a perfectly matched architecture that removes system-matching uncertainty, preserves a pure signal path, and unleashes the full musical presence the horn was built to deliver. With intuitive manual bass management for adjusting to room size and placement, and amplification shaped exclusively for this system, OPUS 1 performs with the ease and coherence of a single musical instrument. No amp choices. No setup hurdles. Just effortless high-end from day one. pure refinement for the horn’s mid-high driver precise and manually adjustable (-/+ 6 dB)
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Verified Dealers

Online Dealers

All Dealers

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Authorized dealers for Avantgarde Acoustic Opus 1

  • The ASOC Gallery of Fine Audio — in-store — Stratford, Ontario, Canada (website)
  • Alpha High End — online and in-store — Brasschaat, Vlaams Gewest, Belgium (website)
  • American Sound — in-store — Richmond Hill, Ontario, Canada (website)
  • Audio Concept - Luxembourg — in-store — Gare, Luxembourg, Luxembourg (website)
  • Audio Gallery — online and in-store — Las Rozas de Madrid, Comunidad de Madrid, Spain (website)
  • Audio Revolutions — in-store — Khwaeng Thung Phaya Thai, Krung Thep Maha Nakhon (website)
  • Audiogears — in-store — Casalecchio di Reno, Emilia-Romaña (website)
  • Auditorium — in-store — Hamburg-Mitte, Hamburg, Germany (website)
  • Aug & Ohr — in-store — Zürich, Zürich, Germany (website)
  • AURA HIFI — in-store — Stadtbezirke II, Nordrhein-Westfalen, Germany (website)

and 30 more verified dealers