Paul
Senior Member
Wait till hear the 28B3 !!! [emoji57]
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Bryston announcing SST3 series amps
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James Tanner - Bryston
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Hi Folks,
Outstanding review on our new 4B Cubed due out June 1st from Soundstage Magazine. - (includes measurements you won't believe) !!!
james
Outstanding review on our new 4B Cubed due out June 1st from Soundstage Magazine. - (includes measurements you won't believe) !!!
james
Can't wait. Right out of the box this amp sounded great.
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James Tanner - Bryston
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MEMO: To All Bryston Customers
SUBJECT: The New 4B Cubed Review - Soundstage
June 2017
Hi Folks,
Please see below the link to a superb review on our new Bryston 4B Cubed amplifier from Roger Kanno of Soundstage Magazine
Favourite Quote:
“I was blown away by its amazing transparency, absolute control, and very smooth, very linear sound. In my system, its sound was nearly flawless -- no matter what I listened to.
I couldn’t imagine the sound being much better, at least in terms of accurate reproduction.”
Roger Kanno
Soundstage Magazine
http://www.soundstagehifi.com/index.php/equipment-reviews/1073-bryston-4b3-stereo-mono-amplifier
Also have a look at the exceptional measurements!
Measurements can be found through this link.
http://www.soundstagenetwork.com/in...er&catid=97:amplifier-measurements&Itemid=154
SUBJECT: The New 4B Cubed Review - Soundstage
June 2017
Hi Folks,
Please see below the link to a superb review on our new Bryston 4B Cubed amplifier from Roger Kanno of Soundstage Magazine
Favourite Quote:
“I was blown away by its amazing transparency, absolute control, and very smooth, very linear sound. In my system, its sound was nearly flawless -- no matter what I listened to.
I couldn’t imagine the sound being much better, at least in terms of accurate reproduction.”
Roger Kanno
Soundstage Magazine
http://www.soundstagehifi.com/index.php/equipment-reviews/1073-bryston-4b3-stereo-mono-amplifier
Also have a look at the exceptional measurements!
Measurements can be found through this link.
http://www.soundstagenetwork.com/in...er&catid=97:amplifier-measurements&Itemid=154
He nails it! The 4B3 is just stupid good. Someone pairing the Maggie 1.7's and maybe a pair of REL subs with a 4B3 has a killer system for not a lot of money. Add the BDA3 and you will think you stole something. Without doing the math, I think that entire system would be in the $12-15k range.
James Tanner - Bryston
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Hi Folks,
We have a review coming on the new 7B Cubed Amplifiers and they asked us a number of detailed questions which I thought might be helpful.
MEMO: To All Bryston Customers
SUBJECT: Bryston 7B Q & A
June 2017
Technical Questions: Bryston 7B³
1.Bryston was founded in 1976 in Peterborough, right? Who was the founder? What was the first product – do you have a picture for me?
2.What are mainly the technical improvements to the predecessor?
3.Regarding the low distortion input buffer - what is so new/special?
4.What are the improvements concerning the output stage?
5.The bandwidth up to 100 kHz is larger than the bandwidth of the predecessor but compared to other amps in the same class it isn’t very high. What is the reason for the moderate bandwidth Bryston prefers obviously?
6.The 7B³ has the lowest damping factor/highest output impedance among the Bryston power amps. What is the reason for this? And do you think the sound of the 7B³ is as the result of this a little bit “special” compared to the other amps?
7.Do you have further information of the sense and the function of the Master Circuit Breaker? It seems like a unorthodox solution ...
8.How much is the VA of the toroidal transformer and the capacity of the filter capacitors?
9.What does “Energy storage power transformers“ mean?
10.How many output transistors work per channel and which type?
11.The circuit of the 7B³ is designed fully symmetrical?
ANSWERS:
Thanks for your inquiry. I shall answer your questions in order below:
1. Bryston was founded in 1962 in Toronto, by 3 people named Tony Bauer, Stan Rybb, and John Stoneborough. John Russell, ex-NASA engineer and the father of Brian Russell and Chris Russell, bought the company in 1968. Among Bryston's first products was an electronic blood-testing unit called the 'Aggregometer'. Bryston made its first audio amplifiers in 1973.
2. The technical differences between the 7B Squared and the 7B³ lie in the input buffer. It is a new, patented design by Dr. Alexandru Salomie, who worked with Bryston for several years. The input buffer has very low THD and noise, and it also is extremely good at rejecting power-supply artifacts, noise and RF on the input cables. The result seems to be better imaging, depth and silent background on the musical presentation.
3. The input buffer's patent refers to new compensation methods to stabilize the high-gain, extremely linear amplification circuit, as well as a novel input filtering system to reject common-mode noise and RF before they get into the amplification circuitry.
4. The output stages of the Cubed Series amps are not changed from the Squared Series. We are happy with how they perform.
5. No musical instrument produces tones or harmonics substantially above 20KHz. Thus, Bryston feels that allowing an audio product to produce full power to RF frequencies does not improve the musical presentation and can only potentially lead to 'trouble' in the reproduction. That is why we use an effective RF filter at the input.
6. The damping factor of the 7B³ is very similar to the 4B³ even though the 7B³ is a balanced output amplifier and the 4B³ is a single-ended output amplifier. This is because the output inductors on the 7B³ are a lower value. In fact, the effective damping factor on the 7B³ is normally higher than single-ended amplifiers because it can be placed very close to each speaker, with very short speaker cables.
7. The Master Circuit Breaker on Bryston amplifiers takes the place of a power fuse. It means the user does not have to find and purchase a replacement fuse if it fails, and it cannot be defeated or replaced with a potentially unsafe value.
8. The toridal transformer in each 7B³ is conservatively rated at 850W continuous, but has enormous excess capacity.
9. An energy storage transformer has a heavier-than-normal core to deliver a large internal magnetic field. This allows the transformer to deliver very high spikes of current from its energy storage when recharging the filter capacitors, instead of drawing directly from the wall through the power cord. That means much less Voltage 'sag' when delivering high power on crescendos, and maintains a much more stable sonic 'image'.
10. The 16 output transistors in each 7B³ are Bipolar types and use both NPN and PNP polarities on each half of the waveform for maximum linearity. Each transistor is rated at 230W and 16 Amps of current for a huge reserve of power handling capacity.
11. Yes, the 7B³ is completely symmetrical from input to output.
James
We have a review coming on the new 7B Cubed Amplifiers and they asked us a number of detailed questions which I thought might be helpful.
MEMO: To All Bryston Customers
SUBJECT: Bryston 7B Q & A
June 2017
Technical Questions: Bryston 7B³
1.Bryston was founded in 1976 in Peterborough, right? Who was the founder? What was the first product – do you have a picture for me?
2.What are mainly the technical improvements to the predecessor?
3.Regarding the low distortion input buffer - what is so new/special?
4.What are the improvements concerning the output stage?
5.The bandwidth up to 100 kHz is larger than the bandwidth of the predecessor but compared to other amps in the same class it isn’t very high. What is the reason for the moderate bandwidth Bryston prefers obviously?
6.The 7B³ has the lowest damping factor/highest output impedance among the Bryston power amps. What is the reason for this? And do you think the sound of the 7B³ is as the result of this a little bit “special” compared to the other amps?
7.Do you have further information of the sense and the function of the Master Circuit Breaker? It seems like a unorthodox solution ...
8.How much is the VA of the toroidal transformer and the capacity of the filter capacitors?
9.What does “Energy storage power transformers“ mean?
10.How many output transistors work per channel and which type?
11.The circuit of the 7B³ is designed fully symmetrical?
ANSWERS:
Thanks for your inquiry. I shall answer your questions in order below:
1. Bryston was founded in 1962 in Toronto, by 3 people named Tony Bauer, Stan Rybb, and John Stoneborough. John Russell, ex-NASA engineer and the father of Brian Russell and Chris Russell, bought the company in 1968. Among Bryston's first products was an electronic blood-testing unit called the 'Aggregometer'. Bryston made its first audio amplifiers in 1973.
2. The technical differences between the 7B Squared and the 7B³ lie in the input buffer. It is a new, patented design by Dr. Alexandru Salomie, who worked with Bryston for several years. The input buffer has very low THD and noise, and it also is extremely good at rejecting power-supply artifacts, noise and RF on the input cables. The result seems to be better imaging, depth and silent background on the musical presentation.
3. The input buffer's patent refers to new compensation methods to stabilize the high-gain, extremely linear amplification circuit, as well as a novel input filtering system to reject common-mode noise and RF before they get into the amplification circuitry.
4. The output stages of the Cubed Series amps are not changed from the Squared Series. We are happy with how they perform.
5. No musical instrument produces tones or harmonics substantially above 20KHz. Thus, Bryston feels that allowing an audio product to produce full power to RF frequencies does not improve the musical presentation and can only potentially lead to 'trouble' in the reproduction. That is why we use an effective RF filter at the input.
6. The damping factor of the 7B³ is very similar to the 4B³ even though the 7B³ is a balanced output amplifier and the 4B³ is a single-ended output amplifier. This is because the output inductors on the 7B³ are a lower value. In fact, the effective damping factor on the 7B³ is normally higher than single-ended amplifiers because it can be placed very close to each speaker, with very short speaker cables.
7. The Master Circuit Breaker on Bryston amplifiers takes the place of a power fuse. It means the user does not have to find and purchase a replacement fuse if it fails, and it cannot be defeated or replaced with a potentially unsafe value.
8. The toridal transformer in each 7B³ is conservatively rated at 850W continuous, but has enormous excess capacity.
9. An energy storage transformer has a heavier-than-normal core to deliver a large internal magnetic field. This allows the transformer to deliver very high spikes of current from its energy storage when recharging the filter capacitors, instead of drawing directly from the wall through the power cord. That means much less Voltage 'sag' when delivering high power on crescendos, and maintains a much more stable sonic 'image'.
10. The 16 output transistors in each 7B³ are Bipolar types and use both NPN and PNP polarities on each half of the waveform for maximum linearity. Each transistor is rated at 230W and 16 Amps of current for a huge reserve of power handling capacity.
11. Yes, the 7B³ is completely symmetrical from input to output.
James
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GSOphile
Active member
"6. The damping factor of the 7B³ is very similar to the 4B³ even though the 7B³ is a balanced output amplifier and the 4B³ is a single-ended output amplifier."
So James, would it be correct to say that the 7B3 is a fully balanced amp, whereas the 4B3 has balanced inputs but is not fully balanced throughout?
James Tanner - Bryston
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Yes correct - the 4B is a fully balanced differential balanced input but runs single ended internally.
james
james
James Tanner - Bryston
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MEMO: To All Bryston Customers
SUBJECT: Bryston 14B Cubed Amplifier Review
July 2017
The Verdict:
"I did not believe that the older Bryston 14B SST2 amplifier could be improved upon!
A bastion of neutrality, gobs of power and bipolar output, bass quickness that squeezed out the last ounce of low extension.
However, the new 14B has got that power slam and more, plus relays a sense of detail refinement in smoothness, imaging and upper-end "air" over the old one. Dare I say, it is even better than the old amp with hi-res music, such as DSD 5.6, and 24/352 PCM. And I thought the old 14B was already a good hi-res capable, high power amp.
The new Bryston 14B3 Cube is certainly an Everything Audio Network Stellar Sound Award winner and a candidate for amp of the year."
John Gatski
Everything Audio
SUBJECT: Bryston 14B Cubed Amplifier Review
July 2017
The Verdict:
"I did not believe that the older Bryston 14B SST2 amplifier could be improved upon!
A bastion of neutrality, gobs of power and bipolar output, bass quickness that squeezed out the last ounce of low extension.
However, the new 14B has got that power slam and more, plus relays a sense of detail refinement in smoothness, imaging and upper-end "air" over the old one. Dare I say, it is even better than the old amp with hi-res music, such as DSD 5.6, and 24/352 PCM. And I thought the old 14B was already a good hi-res capable, high power amp.
The new Bryston 14B3 Cube is certainly an Everything Audio Network Stellar Sound Award winner and a candidate for amp of the year."
John Gatski
Everything Audio
James Tanner - Bryston
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MEMO: To All Bryston Customers
SUBJECT: Bryston 14B Cubed Review
August, 2017
Hi Folks,
Please see below a superb review of our new 14B Cubed amplifier in Everything Audio magazine. The ‘STELLAR SOUND AWARD’ is not given lightly.
Favorite Quote:
“In our opinion, the new Bryston 14B3 Cube stereo amplifier is most certainly an Everything Audio Network Stellar Sound Award winner and a candidate for AMP OF THE YEAR.”
http://everythingaudionetwork.blogspot.com/2017/08/audiophile-review-bryston-14b3-stereo.html
SUBJECT: Bryston 14B Cubed Review
August, 2017
Hi Folks,
Please see below a superb review of our new 14B Cubed amplifier in Everything Audio magazine. The ‘STELLAR SOUND AWARD’ is not given lightly.
Favorite Quote:
“In our opinion, the new Bryston 14B3 Cube stereo amplifier is most certainly an Everything Audio Network Stellar Sound Award winner and a candidate for AMP OF THE YEAR.”
http://everythingaudionetwork.blogspot.com/2017/08/audiophile-review-bryston-14b3-stereo.html
James Tanner - Bryston
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Hi Folks,
Another STELLAR review from down under on the new Bryston 4B Cubed:
Favourite Quote:
CONCLUSION
"A well-designed solid-state amplifier should fulfil the purest principles of music reproduction, accepting the input signal, then transparently and harmlessly delivering it to the transducers regardless of their inherent electrical demands, providing effortless and tight control of the drivers while manifesting boundless dynamic expression, detailed resolution and accurate tonality.
In the 4B³, Bryston has covered all these bases covered...for at least 20 years."
Email me if you want a copy - [email protected]
Another STELLAR review from down under on the new Bryston 4B Cubed:
Favourite Quote:
CONCLUSION
"A well-designed solid-state amplifier should fulfil the purest principles of music reproduction, accepting the input signal, then transparently and harmlessly delivering it to the transducers regardless of their inherent electrical demands, providing effortless and tight control of the drivers while manifesting boundless dynamic expression, detailed resolution and accurate tonality.
In the 4B³, Bryston has covered all these bases covered...for at least 20 years."
Email me if you want a copy - [email protected]
These amps are chameleons. They can totally change depending on preamp pairing. I have not tried a Bryston preamp, but paired with the VAC tube preamp they are OMG good! Awesome! Paul has tried his with an Air Tight tube preamp and also had great success.
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James Tanner - Bryston
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MEMO: To All Bryston Customers
SUBJECT: Bryston 4B Cubed – Audio Esoterica Review
August 2017
Hi Folks,
Another STELLAR review from down under on the new Bryston 4B Cubed:
Favourite Quote:
CONCLUSION:
"A well-designed solid-state amplifier should fulfil the purest principles of music reproduction, accepting the input signal, then transparently and harmlessly delivering it to the transducers regardless of their inherent electrical demands, providing effortless and tight control of the drivers while manifesting boundless dynamic expression, detailed resolution and accurate tonality. “
Link To Full Review:
http://www.bryston.com/PDF/reviews/2017_08_Review_4B3_Audio_Esoterica.pdf
SUBJECT: Bryston 4B Cubed – Audio Esoterica Review
August 2017
Hi Folks,
Another STELLAR review from down under on the new Bryston 4B Cubed:
Favourite Quote:
CONCLUSION:
"A well-designed solid-state amplifier should fulfil the purest principles of music reproduction, accepting the input signal, then transparently and harmlessly delivering it to the transducers regardless of their inherent electrical demands, providing effortless and tight control of the drivers while manifesting boundless dynamic expression, detailed resolution and accurate tonality. “
Link To Full Review:
http://www.bryston.com/PDF/reviews/2017_08_Review_4B3_Audio_Esoterica.pdf
I have really found the new SST3 amps to be stellar performers with a properly matched preamp.
James Tanner - Bryston
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MEMO: To All Bryston Customers
SUBJECT: Bryston 4B Cubed – Reference Component
September, 2017
Hi Folks,
The Soundstage editors and staff have announced the new Bryston 4B Cubed stereo amplifier has attained SOUNDSTAGE Hi-Fi Reference Component status!
Please see link below.
RECOMMENDED REFERENCE COMPONENT:
BRYSTON 4B CUBED STEREO/MONO AMPLIFIER
http://www.soundstagehifi.com/index...e-component-bryston-4b3-stereo-mono-amplifier
SUBJECT: Bryston 4B Cubed – Reference Component
September, 2017
Hi Folks,
The Soundstage editors and staff have announced the new Bryston 4B Cubed stereo amplifier has attained SOUNDSTAGE Hi-Fi Reference Component status!
Please see link below.
RECOMMENDED REFERENCE COMPONENT:
BRYSTON 4B CUBED STEREO/MONO AMPLIFIER
http://www.soundstagehifi.com/index...e-component-bryston-4b3-stereo-mono-amplifier
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Terrific amp!
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James Tanner - Bryston
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MEMO: To All Bryston Customers
SUBJECT: Bryston 28B Cubed – Customer Feedback
September, 2017
“Good morning James,
Got the Bryston 28B Cubed amplifiers as planned and after a quick set-up, I had a first listen yesterday: OMG!
To be honest with you I did not expected a so big difference and instead of speaking within the regular terms employed in audio I will say:
Everything seems Sooooo easy now!
I have only tried my Pyramid speakers at this moment because one loudspeaker of my other pair is apart to begin the external cross over project but I do not have any doubt that these amplifiers will drive any speaker with ease.
Like I do with eveything I purchase, I took a quick look inside the amp and was very impressed by the simplicity and build quality, very, very good engineering inside! I also found the binding posts really nice.
I am already thinking of going active with a Bryston BAX-1 Digital Crossover.
Well I will stop right now bothering you with all my questions and wish you a very good day! I will do my best to be present at the TAVES in October and met you there if possible.”
Regards,
Louis
SUBJECT: Bryston 28B Cubed – Customer Feedback
September, 2017
“Good morning James,
Got the Bryston 28B Cubed amplifiers as planned and after a quick set-up, I had a first listen yesterday: OMG!
To be honest with you I did not expected a so big difference and instead of speaking within the regular terms employed in audio I will say:
Everything seems Sooooo easy now!
I have only tried my Pyramid speakers at this moment because one loudspeaker of my other pair is apart to begin the external cross over project but I do not have any doubt that these amplifiers will drive any speaker with ease.
Like I do with eveything I purchase, I took a quick look inside the amp and was very impressed by the simplicity and build quality, very, very good engineering inside! I also found the binding posts really nice.
I am already thinking of going active with a Bryston BAX-1 Digital Crossover.
Well I will stop right now bothering you with all my questions and wish you a very good day! I will do my best to be present at the TAVES in October and met you there if possible.”
Regards,
Louis
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James Tanner - Bryston
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Here's another note of appreciation for the 4B3. I find it musical, neutral, non-irritating (like music), and unflappable. I tried a couple of esteemed & more expensive amps and prefer the uncolored quality of the 4B3. Very happy to have it in my system ... for a long time, I'm sure.
Oh, and it does all that without dumping hundreds of watts of heat into the room like some of the competition.
Well done! It deserves all those awards!
Mike
Former Frustrated Flutist
Oh, and it does all that without dumping hundreds of watts of heat into the room like some of the competition.
Well done! It deserves all those awards!
Mike
Former Frustrated Flutist
Paul
Senior Member
Hi James, What is sonic difference on 7B vs 14B ? Is there are any difference on these two ?