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
- 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) Read Review...
- 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) Read Review...
- 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) Read Review...
Specifications
| Dimensions | Inches: 17 or 19 W x 8.1 H x 10.75 or 12.75 (with front handles) D |
| Weight | 35 lbs | 16 kg |
| Frequency Response: | <1Hz - 100kHz: -3dB |
| THD+N (20Hz-20kHz @ Rated Power, 8Ω): | <0.005% |
| Power Output (per channel): | 200W @ 8Ω | 300W @ 4Ω |
| Noise: | RCA: -<106dB |
| XLR: <-111dB | |
| Input Impedance: | Unbalanced 7.5kΩ |
| Balanced 30kΩ+ / 6kΩ- |
3 Reviews Hide Reviews Show Reviews
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The bulwark
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.
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Bryston 3B, 4B and 14B “Cubed” power amplifiers
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.
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3B Cubed Dual-Mono Amplifier
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 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.
