[Phil A]

That is definitely something i can agree on . Hopefully Mr Tanner can solve the mystery of inaccurate Manuals and reviews .

It just could be some minor changes along the way.  All manufacturers do this, it is not just Bryston.  I used to do deliveries/installs with a friend who worked at a high end shop and we would deliver something and then weeks or months later there would be some minor changes.  If it were obvious to the customer (for example like the feet underneath the speaker), some would come in and make it sound as if the manufacturer and store deliberately ripped them off (and I know at least a couple of them complained to the manufacturer about those obvious but purely cosmetic feet changes - believe on one they just got a new supplier).  People get touchy in this hobby.  I heard the owner say on the way to do a delivery several times, please don't tell the customer about the change (it is not significant, not under his control and I'm sure he preferred to live without grief over nothing).  As James noted in the post about changes to preamps:

"THE DIFFERENCES ARE:

1. Depending on age of the BP-25 the gain stage transistors were change some years ago.

2.The RCA jacks were changed on the BP-26.

3. The grounding system changed on the BP-26.

4. The MPS-2 separates the low voltage and high voltage sections of the preamp

5. The older BP-PSR power supply on the BP-25 was an A/C design the newer MPS-1 was a D/C supply

6. The MPS-2 is a D/C supply"

The changes are evolutionary.  They didn't take some piece of crap product and turn it into the best.  They took a great product to start with and made some improvements.

[maplegrovemusic]

It just could be some minor changes along the way.  All manufacturers do this, it is not just Bryston.  I used to do deliveries/installs with a friend who worked at a high end shop and we would deliver something and then weeks or months later there would be some minor changes.  If it were obvious to the customer (for example like the feet underneath the speaker), some would come in and make it sound as if the manufacturer and store deliberately ripped them off (and I know at least a couple of them complained to the manufacturer about those obvious but purely cosmetic feet changes - believe on one they just got a new supplier).  People get touchy in this hobby.  I heard the owner say on the way to do a delivery several times, please don't tell the customer about the change (it is not significant, not under his control and I'm sure he preferred to live without grief over nothing).  As James noted in the post about changes to preamps:

"THE DIFFERENCES ARE:

1. Depending on age of the BP-25 the gain stage transistors were change some years ago.

2.The RCA jacks were changed on the BP-26.

3. The grounding system changed on the BP-26.

4. The MPS-2 separates the low voltage and high voltage sections of the preamp

5. The older BP-PSR power supply on the BP-25 was an A/C design the newer MPS-1 was a D/C supply

6. The MPS-2 is a D/C supply"

The changes are evolutionary.  They didn't take some piece of crap product and turn it into the best.  They took a great product to start with and made some improvements.

Lets not keep perpetuating that the sp2 is equivalent to the bp25 until we hear straight from the source . Previous postings could have been Brystons intentions at the time of post . I am not going to research when comments were made . Ect..  Mr Tanner responded to my initial inquiry regarding the dac in the sp2 . I assume he read my post all the way through , including my stating the equivalence in the 2 channel section being bp26 . He did not correct me in his response . Hence i still feel strongly in my postings . How can i not , It is in black and white in my manual and in Stereophiles review . Never corrected by Bryston in manufacturers comments .
 no need for rebuttal phil

[Phil A]

For the record. I've never said the SP2 is the not the same as the BP-26.  I've said the SP1.7 manual indicates it is the same as the BP-25 and pointed to threads where James posted that there are no differences in the analog sections of the SP1.7 and SP2 and if there was not changes along way (which is entirely possible and probable) it is my understanding from early information about the product there should be no differences in the preamp sections.  I noted initially based on those things that "As I understand it (used to own a 1.7), the SP2 is the equivalent of a BP25, not a 26."  That's my understanding based on what has been said by others.  I don't have further information to add (and not constructive to the thread to have words put into one's mouth) as all I've done is indicate what factually is in the SP1.7 manual and what was said by a Bryston rep ""If you are using the 1.7 for analog 2-channel only the upgrade is not necessary.  It is only the digital board that gets the upgrade."  I'm not an expert but based on that it is my interpretation (and we all can make a mistake) but that sort of implies there are no changes between the SP1.7 and SP2 other than the digital board.  And that's the only reason I indicated initially that it was my understanding.

[James Tanner]

Hi Folks,

The SP1.7 and the SP2 had identical Stereo ByPass sections but the confusions comes as there was not a lot of difference between the BP25 and the BP26 preamplifiers other than a much larger power supply with the BP26.  The SP 1.7 and SP2 were all based on the discrete Class A preamp analog sections we use in all our preamps.

When you get to this level of quality the differences become very small as it is much more of an evolutionary step rather than a wholesale change.

james

[Phil A]

Hi Folks,

The SP1.7 and the SP2 had identical Stereo ByPass sections but the confusions comes as there was not a lot of difference between the BP25 and the BP26 preamplifiers other than a much larger power supply with the BP26.  The SP 1.7 and SP2 were all based on the discrete Class A preamp analog sections we use in all our preamps.

When you get to this level of quality the differences become very small as it is much more of an evolutionary step rather than a wholesale change.

james

James - thanks for the clarification.  That's why I put there were probably small evolutionary changes a couple of posts back.

[alexone]

hi, Maple!

i'm pretty sure that the dac of the SP2 is a Crystal CS43122...

al.