[alexone]

James,

is there a new amp called 2.5B SST² soon available?? 

al.

[James Tanner]

James,

is there a new amp called 2.5B SST² soon available?? 

al.

Hi al

Yes replacing the 2B - it is the amp section from the new B135 SST2 integrated amp.

James

[bobNL]

Hi James,

It would seem these are interesting times over at Bryston!
Is this the start of an complete new line of poweramps?
Will there be a 4.5B sst2?

How does the new amp compare to the regular 2b?

Cheers,
Bob

[James Tanner]

Hi James,

It would seem these are interesting times over at Bryston!
Is this the start of an complete new line of poweramps?
Will there be a 4.5B sst2?

How does the new amp compare to the regular 2b?

Cheers,
Bob

No plans on the larger amp front but the new B135  just sounded so good we decided to replace the 2B SST and the BP16 preamp with the parts from the B135.

james

[Alpha10]

No plans on the larger amp front but the new B135  just sounded so good we decided to replace the 2B SST and the BP16 preamp with the parts from the B135.

james

Very interesting, I was considering buying a 2BSST2 to drive my centre speaker, so, does this new amp tonally match the rest of the series? It would be working alongside my 4BSST2 running the front two.

Cheers

[James Tanner]

Very interesting, I was considering buying a 2BSST2 to drive my centre speaker, so, does this new amp tonally match the rest of the series? It would be working alongside my 4BSST2 running the front two.

Cheers

Hi Alpha

Yes the feature set on the 2.5B is identical to the older 2B but has 135 watts per channel instead of 100 watts and of course the new circuitry. 

james

[Alpha10]

Hi Alpha

Yes the feature set on the 2.5B is identical to the older 2B but has 135 watts per channel instead of 100 watts and of course the new circuitry. 

james

Thank you James. As a follow up question, given that I want this to go between my SP3 and PMC CB6i speaker, what in your opinion is the best configuration, use the amp in bridged mono and use the single XLR out, use the dual xlr outs and biamp the speaker? The CB6i is a fairly benign 6 Ohm nominal I think. I presently use a Powerpac-120 and assume that the 2.5B would be an even better match to my 4BSST2?.

Cheers

[James Tanner]

Thank you James. As a follow up question, given that I want this to go between my SP3 and PMC CB6i speaker, what in your opinion is the best configuration, use the amp in bridged mono and use the single XLR out, use the dual xlr outs and biamp the speaker? The CB6i is a fairly benign 6 Ohm nominal I think. I presently use a Powerpac-120 and assume that the 2.5B would be an even better match to my 4BSST2?.

Cheers

Yes at 6 ohms and a benign load use the 2.5 B in mono.

james

[Alpha10]

Yes at 6 ohms and a benign load use the 2.5 B in mono.

james

Thank you again, last question, I promise, but, when will these start shipping, roughly?

Cheers

[James Tanner]

Thank you again, last question, I promise, but, when will these start shipping, roughly?

Cheers

i would say a month.

james

[Alpha10]

i would say a month.

james

Thank you.

[Alpha10]

i would say a month.

james

Hi James, do you have any photos or specs at all yet available for the 2.5B?

Cheers

[niels]

You are talking about xlr and bridging of the amplifier, will the 2,5 have that?

[James Tanner]

BP-17 PREAMPLIFIER

Frequency Response 20Hz - 20kHz +/- .05dB
IM or THD Less than 0.003%
High Level Sensitivity 500mV
Rated Noise Ref. 500mV 20-20kHz - 100dB

Features • 6 stereo RCA inputs - 4 with DAC option
1 stereo RCA output
1- pair XLR Balanced Outputs
1 stereo tape loop
Headphone output
Hand held full remote control - optional
Optional MM phono stage
Optional DAC

2.5B SST-2 AMPLIFIER

Watts - 135 watts per channel, 8 ohms 180 watts per channel, 4 ohms
Harmonic Distortion - Less than .005% from 20Hz to 20kHz at 135 watts
IM Distortion - Less than .005% from 10 milliwatts to 135 watts
Noise - 108dB below full output
Slewing Rate -  > than 60 volts per microsecond
Power Bandwidth - .5Hz to over 100kHz
Damping Factor - Over 500 at 20Hz, ref. 8 ohms
Input Sensitivity and Impedance - 1 volt in = 100 watts 50 k

Features
Regulated power supplies to all voltage gain stages
Each channel employs completely independent power supply
Will deliver full output to any phase angle at 4 ohms or higher.
1 stereo pair RCA input, 50K, 1 Pair XLR Balanced Inputs


Dimensions 19 or 17 x 4.75 x 16 inches,
48.26 or 43.18 x 12.1 x 40.64 cm
wt: 30 lbs, 13.6 kg

Finish Silver or Black

[rob80b]

Hi James

Would the 2.5 be bridgeable and accommodate a 4ohm load (I'm thinking not), it would be for my centre channel and possible another 2.5 for the rears, hate having one channel sitting there be idle.

Another option to compliment the 2.5 and the 135 might be a similar sized mono block which would be ideal and might generate a lot of interest for those of us who currently have (and I know there are a lot of us) a 4B, 3B or 2B upfront and would just like to add a smaller centre channel amp for a HT set-up in a smaller room, maybe something to consider.

Robert

[James Tanner]

Hi James

Would the 2.5 be bridgeable and accommodate a 4ohm load, thinking of my centre channel and possible another 2.5 for the rears, hate having one channel sitting there be idle.

Another option to compliment the 2.5 and the 135 might be a similar sized mono block which would be ideal and might generate a lot of interest for those of us who currently have (and I know there are a lot of us) a 4B, 3B or 2B upfront and would just like to add a smaller centre channel amp for a HT set-up in a smaller room, maybe something to consider.

Robert

Hi Robert,

So much depends on the 'reactivity' of the load - a 3-4 ohm load on most dynamic type speakers would not be a problem with a bridged 2.5B whereas an electrostatic speaker would not be a good match.  Subwoofers for instance have very easy 'duty cycles' so bridging a 2.5 is no issue at all.

james

[srb]

The 2B SST² was rated at 180W at 4 ohms.  The 2.5B SST², with 35% higher power at 8 ohms (135W vs. 100W) is still rated at the same 180W at 4 ohms.  Was the power supply and/or heatsink capacity not increased to allow a correspondingly higher 4 ohm output?
 
Steve

[James Tanner]

The 2B SST² was rated at 180W at 4 ohms.  The 2.5B SST², with 35% higher power at 8 ohms (135W vs. 100W) is still rated at the same 180W at 4 ohms.  Was the power supply and/or heatsink capacity not increased to allow a correspondingly higher 4 ohm output?
 
Steve

At little more power supply Steve but I would rather err on the conservative side.

james

[rob80b]

Hi Robert,

So much depends on the 'reactivity' of the load - a 3-4 ohm load on most dynamic type speakers would not be a problem with a bridged 2.5B whereas an electrostatic speaker would not be a good match.  Subwoofers for instance have very easy 'duty cycles' so bridging a 2.5 is no issue at all.

james

Thanks James

Interesting news indeed, was advised not to use my 2BLP and 3BST in bridged mode on a 4 ohm load so the 2.5 just might fit he bill, does the same hold true with the current 2BSST?

Robert

[James Tanner]

Thanks James

Interesting news indeed, was advised not to use my 2BLP and 3BST in bridged mode on a 4 ohm load so the 2.5 just might fit he bill, does the same hold true with the current 2BSST?

Robert

Hi Robert - yes true but as I said I have used the 2BSST and the 3B SST many times in bridged mode with 4 ohms loads on typical dynamic speakers with no issues at all.  If the amplifier was having problems you would see the LED current limiting lighting up RED.

james