SKU: 73576710510

Bryston 3B³ Cubed Dual-Mono Amplifier

Sale price$4274.55 Regular price$4749.50
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Description

Bryston 3B³ Cubed Dual-Mono Amplifier3B Cubed Dual Mono Amplifier Way back in 1973, a young engineer named Chris Russell took his new prototype amplifier, the PRO 3, to an A list studio in Toronto for an audition. He left with an order for two. Nearly five decades later, that amp has evolved into the Bryston 3B Cubed. It's twice as powerful as the original and ten times as impressive. Though it's one of our smaller amplifiers, it features all the same technology found in our venerable

3B Cubed Dual-Mono Amplifier

Way back in 1973, a young engineer named Chris Russell took his new prototype amplifier, the PRO 3, to an A list studio in Toronto for an audition. He left with an order for two. Nearly five decades later, that amp has evolved into the Bryston 3B Cubed. It's twice as powerful as the original and ten times as impressive. Though it's one of our smaller amplifiers, it features all the same technology found in our venerable 4B. One big advantage, however, is the shallow depth. The 3B Cubed is a great all around amp, but is especially useful for shallow mounting depth applications.

Features

  • Balanced XLR and Single ended RCA input
  • 2 Channels each with fully independent power supplies including transformers
  • 200W into 8 ohms (and up to 300 into 4 ohms) per channel
  • The patented Salomie circuit found in all Cubed Series amplifiers
  • Switchable gain (23dB or 29dB)
  • Fully convection cooled means no noisy fans
  • Machined and anodized aluminum enclosure and dress panel
  • Less than 500mW standby power consumption
  • SoftStart microprocessor controlled startup sequence won't trip circuit breakers
  • DC trigger for automated turn on and turn off
  • Legendary Bryston 20 Year Warranty

Options

  • Silver or black faceplate
  • 17” or 19” faceplate (non-rack mountable) 19" comes with front mounted handles
  • PRO version includes 19" rack mount dress panel in black plus rear panel channel trim pots (-14 to 0dB)

Reviews

After our extensive tests, we can conclude that with the 3B³ you really get a heck of an amplifier. A powerhouse that is not only enormously robust, but also plays with delicate, almost surgical precision. We can only say that the 3B³ belongs in the absolute reference class.

Harro Tillema

Alpha Audio

The interesting thing about the new sound is that it is smoother and warmer, yet still comes across as completely neutral, and with a refinement and low-level resolution that leaves nothing to be desired. The most amazing quality perhaps is in the treble, which is supremely subtle and decidedly non-edgy, even with the most critical speakers.

Christiaan Punter

HFA

Last but not least, a very exciting insight: Whether it's the high damping factor or the broadband - the Bryston power amp has perfectly harmonized with all my speakers and literally made the most of them.

Jochen Reinecke

Fairaudio

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: 73576710510

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Alan
Bozeman, US
★★★★★ 5
Asurion coverage was worth every penny!
Bought a window AC in 2020 and was offered Asurion coverage at checkout. Paid $39 for the 4 year plan and never expceted it would be worth the money paid. Honestly, never expected to even use it. That said...the AC failed about 2 years later so I made a claim online. The claim went in but required a call to an Asurion rep (very nice guy on the phone). He asked a few questions then told me the claim was approved. Total time to for the entire process was about 15 mins. I had the choice of having it repaired or a refund check. I asked for the refund. An emailed pre-paid UPS label was recieved a few minites later and the guy said they'd mail me a check when the UPS package was received, so I dropped it off at UPS. Three weeks later I had a check in my hand for $399 (the excact cost I paid for the AC unit 2 years before minus taxes paid). Really easy process and quick time to receive the check. The only thing to note is that if you make a purchase like that (large electronic or home appliance)...keep that box and packaging. Luckily I had it all and just popped it back into the box for shipment. Not sure how I would have dealt with that if I hadn't saved the box. Thank you Asurion, for delivering on your promise of quick and easy extended warranty payment. I'll defintely purchase the plan again with my replacement AC!
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Reviewed in the United States on January 20, 2023
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Amazon Customer
Battle Creek, US
★★★★★ 5
Best warranty ever.
Outstanding. No questions asked.
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Reviewed in the United States on June 4, 2026
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Christina Hughesman
West Palm Beach, US
★★★★★ 4
Clean air
I bought it to clean the air in the house took a few days to get it linked to my phone but finally got it working. It’s a little complicated because I didn’t know how to set it but getting better at it. I think it’s a good product.
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Reviewed in the United States on April 10, 2023
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Whitney Puckett
Omaha, US
★★★★★ 5
Awesome Process
Fast, Easy process which is much appreciated. I was able to work through the process efficiently and will be using them on future purchases. I would highly recommend Asurion to protect your next purchase. Thank you!
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Reviewed in the United States on March 6, 2026
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bacdoc
Port Orchard, US
★★★★★ 5
Great Customer Service
Honored my protection plan without an issue They issued me a refund for the original cost in which I repurchased the same item. I also purchased the 4 Year Protection Plan again because their customer service is outstanding 👏
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Reviewed in the United States on April 24, 2026

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