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
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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]
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SKU: 73576710510

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4.0 ★★★★★
Based on 29 reviews
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Product Reviews
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Verified Purchase
Another Rando from Somewhere
West Palm Beach, US
★★★★★ 5
Good racks, 2 slides instead of 1, smooth action
Size: 7.1" - 2 Drawers (3.3" each drawer), Color: Black, Size: 7.1" - 2 Drawers (3.3" each drawer), Color: Black
Pros: 2 sliders instead of just one, smooth action on the slides, slides ‘lock’ into place when retracted Cons: none for me, other than no option for a single drawer in this size Needed a wide 2-tier rack to go along with other racks I bought at the same time. I chose this one primarily because: - it has 2 sliders, instead of a single one in the middle. - it’s shorter than others I looked at and I needed to fit some taller items. - there’s only screws attaching the sliders to the base, which I was going to remove to reduce height. I really only needed a single 2-tier rack in this size, but it was only offered as a double. Fortunately, the sliders were only affixed to the base with screws and not rivets, so dismantling a single drawer was easy and didn’t require doing any damage. If you happen to need to do the same, but still have to use the base to clear a lip at the bottom of the cabinet, the metal of the base should be easy to cut in half if you have or have access to the power tools to do so. If you don’t, you could still dismantle 1 rack and just create a new base with some thin wood, then screw both directly to the cabinet. No complaints, would buy again if it were offered in a single-drawer configuration. Having 2 slides was still definitely a big plus, nonetheless, but I now have half a unit that I don’t necessarily need. I would note that the sliders don't extend quite as far out as I thought they may, but it's really only ≤1" that I'm talking about and they still extend far enough to vertically pull the rear-most item out, so it's not a biggie, just worth noting. * I didn’t use the adhesive strip and just threw it away, as I intended to secure it with screws from the beginning. If you’ll be using the base, I’d suggest drilling holes through the base and securing it to the cabinet with screws. The adhesive could well be fine, but it’s asking for trouble to have this loaded with glass and have the adhesive give out. No doubt it would happen when you have 3 things on the stove, the phone is ringing and it was the also week you kinked your back something awful, right? (Item reviewed: 2 drawer x 3.3")
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Reviewed in the United States on March 16, 2026
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Verified Purchase
Christopher M.
Lake Worth, US
★★★★★ 5
Excellent quality / size.
Size: 7.4" - 3 Drawers (2.2" each drawer), Color: Black
You magnificent SOB! This is an excellent product - it is exactly as advertised, saves space, is well-built and the measurements are spot-on. There is no assembly and the double-sided tape works perfectly to stabilize the unit. Great product and worth the price.
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Reviewed in the United States on March 29, 2026
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Verified Purchase
Amazon Customer
New York, US
★★★★★ 5
Great organization!
Size: 7.4" - 3 Drawers (2.2" each drawer), Color: Black
Easy to install, works smoothly and easy to see/access spice bottles. Great organization for spices.
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Reviewed in the United States on May 15, 2026
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Verified Purchase
Lance
Phoenix, US
★★★★★ 4
Nice units
Size: 7.4" - 3 Drawers (2.2" each drawer), Color: Black
Nice way to organize and utilize spices and seasonings. Slides out well. You will have to watch sizes of bottles. Units won't handle taller and wider bottles.
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Reviewed in the United States on June 9, 2025
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Verified Purchase
Abigail Siedlarz
Houston, US
★★★★★ 5
Sturdy and attractive
Size: 7.4" - 3 Drawers (2.2" each drawer), Color: Black
Very sturdy. Fit my cabinet perfectly. Would love a version that is just one level too. No assembly required. Solid enough that it stays in place without adhesive. Can finally find spices without taking them all out of the cabinet.
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Reviewed in the United States on December 27, 2025

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