SKU: 27161424616

Bryston 4B³ Cubed Dual Mono Amplifier

Sale price$5624.55 Regular price$6249.50
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Description

Bryston 4B³ Cubed Dual Mono AmplifierBryston Products Currently Have A 12 Week Lead Time The Bryston 4B Cubed: The Legend, Perfected. In the history of high fidelity audio, a select few components achieve legendary status. The Bryston 4B is one of them. Since 1978, it has been the trusted powerhouse in countless recording studios and reference home systems around the world. For many music lovers, it is the definitive stereo amplifieran icon of performance and reliability. Now in its

Bryston Products Currently Have A 12 Week Lead Time

The Bryston 4B Cubed: The Legend, Perfected.

 

In the history of high-fidelity audio, a select few components achieve legendary status. The Bryston 4B is one of them. Since 1978, it has been the trusted powerhouse in countless recording studios and reference home systems around the world. For many music lovers, it is the definitive stereo amplifier—an icon of performance and reliability.

Now in its sixth and most advanced generation, the 4B Cubed represents the pinnacle of this storied evolution. It honours the legacy of its predecessors while elevating performance to a breathtaking new standard. The latest iteration is more powerful, more transparent, and more refined than ever before, reaffirming its position as the benchmark against which others are judged.

Authoritative Power, Unflinching Control With a commanding 300 watts per channel into 8 ohms (and a colossal 500 watts into 4 ohms), the 4B Cubed offers limitless dynamic headroom. Its true dual-mono architecture, featuring independent power supplies for each channel, provides a deep, holographic soundstage and the authority to drive any loudspeaker with absolute conviction. From the most delicate nuance to the most explosive crescendo, the 4B Cubed remains utterly composed, delivering music with effortless realism and foundational bass control.

 

The Sound of Truth This isn't just power; it's power guided by surgical precision. Utilising Bryston's patented Salomie circuitry, the 4B Cubed delivers a sound of stunning clarity and truthfulness. It adds no character of its own, serving instead as a crystal-clear window into the heart of the recording. The degree of detail, nuance, and sheer musical honesty is what has made the 4B a legend, and the Cubed version delivers it in its purest form.

The Bryston 4B has always been an aspirational component. Today, the 4B Cubed makes that dream more compelling than ever. If you've always wanted one, now is the perfect time to experience why this amplifier has remained the reference for over four decades. Backed by the legendary 20-year Bryston warranty, it's not just an amplifier—it's an heirloom.

Core Features:

  • Legendary Power: A commanding 300W per channel into 8Ω and 500W into 4Ω.
  • True Dual-Mono Design: Two channels, each with a fully independent power supply and transformer for ultimate channel separation and a vast soundstage.
  • Versatile Inputs: Features both balanced XLR and single-ended RCA inputs.
  • Exclusive Circuitry: Utilises the patented Salomie circuit found in all flagship Cubed Series amplifiers.
  • System Matching: Switchable gain (23dB or 29dB) allows for perfect pairing with any preamplifier.
  • Silent Operation: A fully convection-cooled design means no distracting fan noise.
  • Legendary Reliability: Built to last and backed by Bryston's 20-year warranty.

Available Options:

  • Finishes: Available with a silver or black anodised faceplate.
  • Sizes: Standard 17” width or a 19” width which includes front-mounted handles.

PRO Version: A professional rack-mountable 19” version in black, which adds rear-panel trim potentiometers for precise channel level matching.

 

Specifications

Frequency Response: <1Hz - 100kHz: -3dB
THD+N (20Hz-20kHz @ Rated Power, 8Ω): <0.005%
Power Per Channel 300W @ 8Ω | 500W @ 4Ω
Noise: RCA: <-112db
XLR: <-117db
Input Impedance:     Unbalanced 7.5kΩ
Balanced 30kΩ+ / 6kΩ-
Weight 19 kg
Dimensions Cm: 43 or 48.3 W x 20.6 H x 39.4 D or 45.1 (with handles)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 27161424616

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Tracy C.
Lake Worth, US
★★★★★ 5
The perfect toy for dogs!
Style: The Duo
This is perfect when you have 2 dogs who love to play Fetch! They no longer have to chase after the same ball! The balls that come with it are very sturdy, and the launcher sends both balls far enough away so that both dogs get plenty of exercise. It’s definitely worth the price!
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Reviewed in the United States on May 26, 2026
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Nicholle A.
Lexington, US
★★★★★ 5
PERFECT RETRIEVING TOY
Style: EcoFetch
You can barely whip it and it sails far and fast. This is the perfect retrieving toy for my GSP. She's used to average and we now have a small yard, so the dog park is where she gets to run hard and fast. You can also throw tennis balls with it, which is a plus for when her sister steals her ball. 5 star fun!
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Reviewed in the United States on May 27, 2026
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Kendra H
Whiting, US
★★★★★ 5
Perfect for puppy play
Style: EcoFetch
This is perfect. Works great for a smaller yard and the ball holds up to puppy teeth!
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Reviewed in the United States on May 18, 2026
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Cathy M. Thibodeau
Lowell, US
★★★★★ 5
Easy to use for this old folk!
Style: EcoFetch
If you have a hard time to bend down and throw, this is perfect! It allows you to pick up the ball with little bending over. It also gives much further distance to your throws. Great quality to both the ball and wand.
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Reviewed in the United States on May 5, 2026
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P. Hardilek
Massapequa, US
★★★★★ 5
Great product and fast shipping
Style: EcoFetch
Great ball launcher and ball. My dog adores it and plays with the ball even when she isn’t fetching. Fast shipping as well!
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Reviewed in the United States on May 26, 2026

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