A Deep Dive Into the Bryston 4B Cubed: Legendary Sound and Reliability

Bryston 4B Cubed Stereo Amplifier Review: A Timeless Powerhouse for Audiophiles

Bryston Ltd., a Canadian audiophile electronics company based in Dwight, Ontario, is known for its exceptional reputation in the world of high-performance audio. For over 50 years, Bryston has been designing and manufacturing audio equipment that audiophiles trust. The company is particularly renowned for its reliability and offers an unparalleled 20-year warranty on its analog products—something that sets it apart from competitors. Dwight, while famous for its peaceful summers and great ice cream, is now also known for producing world-class electronics.

The Bryston 4B Cubed: An Iconic Amplifier in its Sixth Generation

The Bryston 4B Cubed is a classic Class A/B amplifier, and its current iteration, the sixth generation, has been in production since 1978. It’s remarkable that the amplifier has only seen six updates in nearly half a century, a testament to its durability and timeless design.

This amplifier delivers a robust 300 watts into eight ohms and 500 watts into four ohms, with both balanced and unbalanced inputs. Despite its power, it’s surprisingly compact, weighing 42 pounds and available in two width options (17 or 19 inches), with a depth of 15.5 or 17.75 inches depending on the model (with or without front handles). For a high-powered amplifier, the Bryston 4B Cubed’s size is a major perk.

Why the Bryston 4B Cubed Stands Out

• Unbeatable Warranty: Bryston’s 20-year warranty is a major selling point. Audiophiles know they are not just buying a piece of equipment—they are investing in peace of mind.
• Ideal for Rack Mounting: The 4B Cubed was designed for installation in a professional or formal audiophile rack. The optional front handles make it easier to move and install, which is ideal for those who appreciate a neat and functional setup.
• Tight and Controlled Sound: The Bryston 4B Cubed stands out for its tight, detailed, and accurate sound. When integrated into my reference system, the amplifier immediately impressed me with how controlled the sound was—a rare feature at this price point.
• Compact Power: The Bryston 4B Cubed is smaller and shallower than expected for an amplifier that produces up to 500 watts at four ohms. In comparison to other amplifiers in its class, like the Anthem MCA 225 Gen 2, it’s impressively more compact without sacrificing power.
• Bridging Capability for Future Upgrades: If you want even more power, the Bryston 4B Cubed can be bridged with another matching amplifier. While most modern speakers will not require this additional power, it’s always good to know the option exists.
• Low Heat and Noise: Despite its considerable power output, the Bryston 4B Cubed produced no noticeable heat or audible operational noise during regular use. Class A/B amplifiers are known to get hot, but this one remained impressively cool and quiet.

Who Should Consider the Bryston 4B Cubed?

The Bryston 4B Cubed is perfect for audiophiles who value precision, build quality, and neutrality in their sound. If you’re driving high-end floorstanding speakers and looking for an amplifier that will last for decades, this is a product you can rely on. The 20-year warranty means you can enjoy it without worrying about obsolescence or performance issues.

Potential Drawbacks

While the Bryston 4B Cubed has many strengths, there are a few aspects that may not appeal to everyone:

• Industrial Aesthetic: The amplifier’s design is utilitarian and somewhat retro. With its green power indicator lights and Bryston logo, the 4B Cubed has an industrial feel, which may not match every audiophile’s taste. It looks more at home in a recording studio than in a luxury living room.
• Lack of Traditional Trigger Jacks: The 4B Cubed doesn’t feature traditional 3.5-mm trigger jacks, which may be a minor inconvenience for those accustomed to automatic power-on/off with their preamps. However, it can still be powered on using a five- or 12-volt external control.

How the Bryston 4B Cubed Sounds: Listening Impressions

For my testing, I paired the Bryston 4B Cubed with a Music Hall cd25.3 CD player, Anthem STR preamplifier, HiFi Zen One Signature DAC, and Paradigm Premier 700F floorstanding speakers. I also compared it to the Anthem MCA 225 Gen 2 amplifier, which delivers less power but is priced much lower.

The difference was immediately noticeable. The Bryston provided more control over the sound, delivering a slightly softer yet more refined sound compared to the Anthem. In particular, it excelled with complex tracks, maintaining clarity and control.

• Jack White’s “Respect Commander”: The Bryston 4B Cubed effortlessly handled the dynamic and distorted guitars, keeping the track tight while allowing each instrument to breathe. The result was a raw, in-the-studio vibe that many audiophiles crave.
• Radiohead’s “National Anthem”: This dense track tests an amplifier’s ability to balance various elements of sound. The Bryston 4B Cubed handled the bass, horns, theremin, and Thom Yorke’s vocals with ease, providing an expansive soundstage and great balance at high volumes.
• Tom Morello’s “Every Step That I Take”: The Bryston’s ability to control both the electronic and guitar-driven dynamics of this track impressed me. It reproduced the sounds clearly and without any distortion, staying true to the master recording.

Will the Bryston 4B Cubed Retain its Value?

Absolutely. Thanks to Bryston’s 20-year warranty, this amplifier is not only a great long-term investment but also holds its resale value well. Even 10 years down the line, you can still expect to recoup a significant portion of your investment, making it a smart purchase for audiophiles looking for long-term reliability.

The Competition

While the Bryston 4B Cubed is in a class of its own, there are a few competitors to consider:

• Pass Labs X250.8: Priced at $10,500, the Pass Labs X250.8 delivers similar power but runs hot compared to the Bryston, especially given its Class-A design. It’s a great option if you have the budget, but it may not offer the same long-term support as Bryston.
• Anthem STR Amplifier: At $6,500, the Anthem STR offers slightly more power and is also Canadian-made. While it’s a worthy competitor, the Bryston has a longer warranty and a more accurate sound profile.
• McIntosh MC312: Priced around $7,500, the McIntosh MC312 offers similar power but has a distinct “house sound” that’s softer than the Bryston’s more neutral presentation. If you prefer a more colored sound, McIntosh may be a better fit, but Bryston is known for its precision.

Final Thoughts: The Bryston 4B Cubed Is a Modern Classic

It’s clear why the Bryston 4B Cubed has been a favorite among audiophiles for decades. With its impressive power, neutral sound, and unbeatable warranty, this amplifier is a true audiophile classic. If you’re looking for an amplifier that delivers pure, uncolored sound without sacrificing power or headroom, the Bryston 4B Cubed is a top contender.

What sets the Bryston 4B Cubed apart from its competition is its balance of value, performance, and long-term support. In the under-$10,000 audiophile amplifier category, it’s hard to find a competitor that matches its combination of features. If you have the opportunity, it’s worth auditioning the Bryston 4B Cubed—its sound quality and build make it a standout choice in the world of high-performance audio.

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