Fyne Audio Cubitt 5: A Stellar Active Debut Redefining the Compact Stereo Market

The landscape of home audio has undergone a dramatic transformation over the past decade. The traditional, sprawling hi-fi stack—comprising separate amplifiers, digital-to-analog converters (DACs), phono stages, and passive speakers—is increasingly sharing shelf space with streamlined, active speaker systems. Recognizing this shift, Scottish loudspeaker specialist Fyne Audio has stepped into the active, Bluetooth-enabled stereo market with its first-ever active design: the Fyne Audio Cubitt 5.

Priced at £549 / $749 / AU$1,495, the Cubitt 5 is a bold statement of intent. It brings Fyne Audio’s celebrated coaxial driver technology and acoustic expertise into a compact, self-amplified package. This comprehensive analysis explores the main facts of this debut, the chronological context of Fyne Audio’s evolution, detailed technical and comparative data, testing observations, and the broader implications for the consumer audio industry.

1. Main Facts: The Cubitt 5 at a Glance

The Fyne Audio Cubitt 5 is a fully active, two-way desktop/standmount speaker system designed to serve as a complete, self-contained audio hub. Unlike passive speakers that require external amplification, the Cubitt 5 integrates amplification, digital processing, and a wealth of physical and wireless connectivity options directly into its compact enclosures.

Key Specifications and Pricing

• Retail Price: £549 / $749 / AU$1,495
• Amplification: 120 watts per channel (Class D, bi-amplified with 60W dedicated to each driver unit)
• Driver Configuration: Coaxial IsoFlare array (19mm titanium dome tweeter nested inside a 12.5cm multi-fibre mid/bass cone)
• Wireless Connectivity: Bluetooth 5.0 (supporting standard AAC and high-resolution aptX HD codecs)
• Wired Inputs: HDMI eARC, Optical Digital (up to 24-bit/96kHz PCM), RCA Line-Level, Moving Magnet (MM) Phono Stage
• Outputs: Dedicated mono subwoofer output
• Dimensions (H x W x D): 26 x 16.5 x 21.5 cm
• Total Weight: 7.8 kg (approximately 3.9 kg per speaker)
• Color Finishes: Olive Green, Midnight Black, Pearl Titanium, Pebble Grey, Arctic White

The system utilizes a "master/client" configuration. The primary (right) speaker houses the power supply, physical inputs, DAC, and pre-amplifier circuitry, while sending the amplified signal to the secondary (left) speaker via a heavy-duty umbilical cable. A 3-meter connection cable is supplied in the box, with an optional 8-meter cable available for £39.99 / €44.99 / $49.99 to accommodate wider room placements.

2. Chronology: Fyne Audio’s Nine-Year Journey to Active Audio

To understand the significance of the Cubitt 5, one must examine Fyne Audio’s rapid ascent in the highly competitive loudspeaker market.

[2017: Fyne Audio Founded]
       │
       ▼
[Award-Winning Passive Releases] ──► (F501E Floorstanders, F701SP Standmounts, Vintage Five)
       │
       ▼
[Recent Milestone: F5E Standmounts] ──► (Proprietary IsoFlare tech made highly affordable at £399)
       │
       ▼
[2026: The Active Era Begins] ──► (Launch of the Cubitt 5 Active/Bluetooth Stereo System)

The Passive Foundation

Fyne Audio was established nine years ago by a group of industry veterans, including former senior management and engineering staff from Tannoy. Leveraging decades of collective experience, the engineering team set out to refine the point-source, coaxial driver concept.

Over the years, the brand accumulated critical acclaim and numerous accolades. Notable five-star successes include:

• The F701SP: A high-end standmount speaker demonstrating the absolute limits of Fyne’s driver integration.
• The Vintage Five: A compact, luxury speaker combining retro aesthetic cues with modern acoustic engineering.
• The F501E: Current award-winning floorstanders celebrated for their scale, timing, and value.

Democratizing IsoFlare

A major milestone occurred recently with the release of the entry-level F5E standmount speakers (tested at £399 / $699 / AU$895). The F5E successfully migrated Fyne Audio’s proprietary IsoFlare technology down to an accessible, sub-£400 price point. However, despite this success in the passive arena, the company still lacked a competitor in the rapidly growing active and streaming stereo market—a gap that the Cubitt 5 was specifically engineered to fill.

3. Supporting Data: Technical Innovation and Competitive Analysis

The Cubitt 5 stands out due to its sophisticated engineering, which adapts high-end passive loudspeaker technologies into an active, space-saving format.

The IsoFlare Driver Array and Enclosure Design

At the heart of the Cubitt 5 is the IsoFlare driver. Unlike conventional speakers that position the tweeter above the mid/bass driver, the IsoFlare array places a 19mm titanium dome tweeter precisely at the acoustic center of the 12.5cm multi-fibre mid/bass unit.

Conventional Driver Layout vs. Fyne Audio IsoFlare Coaxial Layout

Conventional:
 ┌─────────┐
 │ Tweeter │  <-- Separate Acoustic Center (Highs)
 ├─────────┤
 │ Woofer  │  <-- Separate Acoustic Center (Lows)
 └─────────┘

IsoFlare Coaxial:
 ┌─────────────┐
 │   Woofer    │
 │  ┌───────┐  │
 │  │Tweeter│  │ <-- Single, Shared Acoustic Center
 │  └───────┘  │     (Time-aligned dispersion)
 └─────────────┘

This coaxial alignment ensures that high and low frequencies are radiated from a single point source, resulting in:

• Time-Aligned Dispersion: Soundwaves reach the listener’s ears simultaneously, improving stereo imaging and focus.
• Wide Sweet Spot: The speaker maintains tonal consistency even when the listener is sitting off-axis.
• Reduced Cabinet Diffraction: Integrating the drivers minimizes baffle clutter, reducing unwanted acoustic reflections.

Furthermore, the mid/bass driver’s rubber surround features Fyne’s patented fluting. This computer-optimized design helps damp energy returning down the cone more effectively than standard half-roll surrounds, significantly reducing distortion and cleaning up the midrange. Low-frequency output is further bolstered by a front-firing bass port, allowing for easier placement close to walls.

Direct Market Comparisons

The Cubitt 5 sits in a highly competitive pricing tier, sandwiched between two formidable five-star active rivals.

4. Official Testing and Usability Observations

A thorough evaluation of the Cubitt 5 in dedicated listening rooms reveals a product of immense capability, though not without minor first-generation compromises.

Connectivity and Setup

The rear panel of the master speaker is exceptionally well-organized, featuring clearly labeled inputs that make setup straightforward for users of all technical backgrounds. The inclusion of HDMI eARC is a major benefit, allowing the speakers to connect directly to a television and be controlled via the TV’s remote.

For vinyl enthusiasts, the integrated moving magnet (MM) phono stage is a standout feature. It allows a turntable—such as the Rega Planar 3 RS Edition used during testing—to be connected directly to the speakers without requiring an external phono preamplifier.

Usability Limitations: The Ergonomic Conundrum

While the physical design of the speakers is elegant, the user interface presents a few hurdles:

1. No Onboard Controls: The speaker cabinets completely lack physical buttons or dials for volume, input selection, or power.
2. Minimalist LED Feedback: A single front-panel LED is the sole indicator of the speaker’s status, turning red during standby. Without a screen or multi-color LED system, there is no visual indication of the current volume level or which input is selected. This can lead to situations where the system is turned on at an unexpectedly high volume.
3. Remote Dependency: Because there are no physical dials, users are entirely dependent on the included remote control. The remote itself is made of lightweight black plastic, which feels less premium than the sturdy, well-finished speaker cabinets. To Fyne’s credit, they have included a magnetic metal holder on the back of the right speaker to keep the remote secure.
4. No Companion App: Unlike some modern competitors, Fyne Audio does not offer a control app or onboard equalization (EQ) adjustments, meaning users must rely on physical placement to tune the bass response.

Technical Quality Control

During initial evaluations, the first review sample sent by Fyne Audio exhibited clipping when using the analog RCA inputs. However, a second replacement sample performed flawlessly, handling high-output analog signals without any distortion. This quick resolution demonstrates the company’s responsive customer service and suggests that the clipping issue was isolated to early production units.

Additionally, the Cubitt 5 exhibits a slightly higher level of background noise (hiss) than some of its rivals when no music is playing. Fortunately, this low-level hiss is completely masked once audio playback begins.

5. Sonic Performance: Vivid, Controlled, and Rhythmic

When it comes to sound quality, the Cubitt 5 maintains Fyne Audio’s reputation for engaging and detailed audio reproduction.

                  ┌─────────────────────────────────────┐
                  │        SONIC CHARACTERISTICS        │
                  └──────────────────┬──────────────────┘
                                     │
         ┌───────────────────────────┼───────────────────────────┐
         ▼                           ▼                           ▼
┌─────────────────┐         ┌─────────────────┐         ┌─────────────────┐
│  Airy Treble    │         │  Taut & Punchy  │         │  Precise Sound  │
│  & Vivid Mids   │         │  Bass Control   │         │     Staging     │
└────────┬────────┘         └────────┬────────┘         └────────┬────────┘
         │                           │                           │
         ▼                           ▼                           ▼
Acoustic instruments       Synthesized bass line       Instruments locked in
shine with realistic       retains impact without      place; wide sweet spot
textures and clarity.      vocal colorations.          thanks to IsoFlare.

Acoustic Placement and Vibrational Control

While the speakers sound best when placed on dedicated stands against a solid rear wall, they are remarkably resilient when placed on a desk. Thanks to the front-firing port and rigid cabinet construction, they resist low-frequency blurring and transfer very little vibration to desktop surfaces—an area where many smaller active speakers struggle.

Audio Testing Notes

• Textural Fidelity & Midrange: Listening to Adrienne Lenker’s Sadness As A Gift, the Cubitt 5 captures the natural resonance and string texture of the acoustic guitars beautifully. The presentation is animated and vivid, bringing vocals forward with excellent clarity.
• Rhythmic Drive & Bass Response: On Fcukers’ electronic track I Like It Like That, the Cubitt 5 displays impressive timing and control. The dual 60W Class D amplifiers deliver deep, synthesized bass hits with great impact, keeping the low-end tightly controlled so it never muddy or overpowers the delicate lead vocals.
• Soundstaging & Instrument Separation: Testing with David Bowie’s complex track Blackstar highlights the strengths of the IsoFlare driver. The stereo image remains stable and well-focused, with instruments precisely positioned across the soundstage. Even when the speakers are placed far apart, the center image remains strong. The system also handles the dynamic shifts in Lazarus effortlessly, placing the layered drums neatly behind Bowie’s vocals.
• Dynamic Responsiveness: On Talk Talk’s The Rainbow, the speakers transition smoothly between quiet, delicate piano notes and sudden bursts of harmonica. Similarly, the dramatic volume changes in Radiohead’s Palo Alto are delivered with satisfying punch and composure, even at higher volumes.

6. Implications: What the Cubitt 5 Means for the Audio Market

The release of the Fyne Audio Cubitt 5 has significant implications for both the manufacturer and the wider consumer audio industry.

A New Chapter for Fyne Audio

By successfully integrating its proprietary IsoFlare and fluted-surround technologies into an active design, Fyne Audio has proven it can compete in the modern, lifestyle-oriented audio market. The Cubitt 5 serves as a highly capable proof-of-concept, paving the way for potential active versions of their higher-end series, such as the Vintage or F700 lines.

Driving the "Just Add Source" Trend

The Cubitt 5 is part of a growing class of products that offer a complete audio system in a single purchase. By including an MM phono stage, HDMI eARC, high-resolution optical inputs, and aptX HD Bluetooth, Fyne Audio has built a system that easily connects to a turntable, a TV, a computer, or a smartphone. This versatility appeals to:

• Space-Conscious Buyers: Users living in apartments or setting up home offices who want high-quality sound without the clutter of traditional audio separates.
• Vinyl Enthusiasts: Listeners who want to enjoy records without the complexity of matching amplifiers and preamps.
• Modern TV Viewers: People looking for a wider, more musical stereo soundstage than even the best single-box soundbars can provide.

Conclusion: A Strong Foundation

While the lack of physical controls, basic LED display, and reliance on a basic remote are minor drawbacks, the Fyne Audio Cubitt 5 is a highly successful active debut. By delivering a balanced, detailed, and engaging soundstage alongside versatile connectivity, Fyne Audio has set a high standard for its first active offering, making the Cubitt 5 an excellent choice for modern music lovers.