Halcro, as a SS rather than tube guy I used to find it rather strange that someone would pay a substantial sum for say a tubed phono stage and immediately replace some or all the tubes and then claim that they were in sonic nirvana. I mean, why didn't the designer see the error of their ways and use those tubes in the first place? I think there are at least five possible explanations. I'm sure someone will add more
1. The customer is correct and the designer got it wrong
2. The designer is correct and the customer got it wrong
3. The new tubes are in fact better but only in the customers system
4. The customer is hearing changes that the designer would not see as improvements
5. The customer is correct and the designer knows they are correct but for cost/availability considerations the tubes are not included in the standard product
I think the last point leads us on to a very important consideration when we talk about modification rather than just tweaking things like power cords. Very very few products are produced as cost no object designs. The Continuum Caliburn or Basis Work of Art are two which comes to mind which do in fact appear to be "cost no object" designs. With almost every product there is a cost/sales volume consideration which must be observed if the designer/manufacturer is to stay in business. Therefore almost every design is inherently compromised and as such may be able to be improved via the judicious use of higher performance/higher cost parts. The designer may in fact want to incorporate these parts in their design but cannot due to cost constraints.
Also, as Sirspeedy has mentioned as time goes by new components with higher levels of performance become available and can be incorporated into an older design with great effect on sound quality. Even the Caliburn and Work of Art are produced with materials, components and procedures of today but who is to say that major improvements will not be available in a few years time that make these statement products seem crude in comparison?
While I don't think I am every likely to look at upgrading the MOSFETS in my power amp, I did modify my Marantz SA11 S1 CD/SACD player. The (at the time, since improved of course) full RAM mod improved the performance of this player by a significant margin across every parameter. Could Marnantz have made the unit sound as good as the RAM mod? Probably better but the cost would have been so high by the time it reached retail that they would not have sold very many. The designer may have been happy but the accountants would not have been and we all know who generally has the final say. Because they do, we get to modify.
1. The customer is correct and the designer got it wrong
2. The designer is correct and the customer got it wrong
3. The new tubes are in fact better but only in the customers system
4. The customer is hearing changes that the designer would not see as improvements
5. The customer is correct and the designer knows they are correct but for cost/availability considerations the tubes are not included in the standard product
I think the last point leads us on to a very important consideration when we talk about modification rather than just tweaking things like power cords. Very very few products are produced as cost no object designs. The Continuum Caliburn or Basis Work of Art are two which comes to mind which do in fact appear to be "cost no object" designs. With almost every product there is a cost/sales volume consideration which must be observed if the designer/manufacturer is to stay in business. Therefore almost every design is inherently compromised and as such may be able to be improved via the judicious use of higher performance/higher cost parts. The designer may in fact want to incorporate these parts in their design but cannot due to cost constraints.
Also, as Sirspeedy has mentioned as time goes by new components with higher levels of performance become available and can be incorporated into an older design with great effect on sound quality. Even the Caliburn and Work of Art are produced with materials, components and procedures of today but who is to say that major improvements will not be available in a few years time that make these statement products seem crude in comparison?
While I don't think I am every likely to look at upgrading the MOSFETS in my power amp, I did modify my Marantz SA11 S1 CD/SACD player. The (at the time, since improved of course) full RAM mod improved the performance of this player by a significant margin across every parameter. Could Marnantz have made the unit sound as good as the RAM mod? Probably better but the cost would have been so high by the time it reached retail that they would not have sold very many. The designer may have been happy but the accountants would not have been and we all know who generally has the final say. Because they do, we get to modify.