Vunce
You are a wise man who understands the monkey’s mind...
However I will wait a bit more so the break- in can be more advanced.
As a teaser I almost had a full day listening during that Easter Monday confined to my home...
Fab
I suspect that your floor is becoming dangerous ...what with all of those banana skins!
Thanks from me too for this new offering. Now I know the future for my second set of boards.
Ah, so sad for my specific use these amps weren't really ("so far"???) suited to "difficult sub 3R loudspeakers"
As another sufferer of the same affliction i have come to the conclusion that no single amp can cope with this and also satisfy my expectations for overall musicality. Hence biamping is about the only sensible solution.
Bi-amping, well, I don't like to mix amps and my (very potential) prob re power and DF would remain the same even with 2 USSAs, as the bass takes 85% of the energy or so and is the man prob.
No single amp to solve the equation... hmm, well, mine is doing OK and TBH I have great hopes in FSSA solving perfectly the equation!
And it can only get better as Fab is polishing for all his amps schematics and part's choice so all this experience and all these successive tweaks can only improve the breed
Lucky us!
Claude
No single amp to solve the equation... hmm, well, mine is doing OK and TBH I have great hopes in FSSA solving perfectly the equation!
And it can only get better as Fab is polishing for all his amps schematics and part's choice so all this experience and all these successive tweaks can only improve the breed
Lucky us!
Claude
Hi meanieI truly enjoy the USSA5, USSA5B on the way....
USSA3 will be next !
Thanks Fab.
Thanks for the update and after all this time since you built it
USSA5B has the bjt output signature so it is different but is also good. I will report later on the USSA3B.
You will have to decide for USSA3 or 3B..
I think it is an interesting experience to experiment the sound of components in the same topology ...
Fab
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I suspect that your floor is becoming dangerous ...what with all of those banana skins!
Thanks from me too for this new offering. Now I know the future for my second set of boards.
You are welcome Brianco and yes I need to pay attention to not slip on the floor....but I have also a carpet under my listening chair...
There will be a brighter future after the virus we hope..
Fab
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After one week of listening I can provide some feedbacks.
At first - at least before break-in - the tonality was more alike the USSA5B and clearly it shows again the differences between lateral mosfet and bjt as output with all the rest about the same. This is the advantage of testing variations of the same design.
My personal observation is that lateral mosfet are generally more”lively” than bjt (I use one amongst the best) as output for the same topology and same bias current.
But, the USSA3B is clearly addictive
The jfet input (LSK170 and LSJ74 in current production but a bit expensive that is true) makes a difference (the only) with the USSA5B.
The imaging and separation are probably at least comparable or even better than the original USSA5 and maybe similar to original USSA3 but I do not have the latter anymore...
For example, at the beginning of the piece Drifting by Andy McKee I can hear some very extended and decayed guitar string plucks and very isolated from the rest as if it was a guitar in my living room with the other instruments in an adjacent room....I asked my wife if it was the effect of the virus to be sure.... but she also confirmed. We are both affected or infected ...
Music is smooth but details are there too.
I am sorry that you can not have more objective comments from others this time because of the confinement....
Fab
At first - at least before break-in - the tonality was more alike the USSA5B and clearly it shows again the differences between lateral mosfet and bjt as output with all the rest about the same. This is the advantage of testing variations of the same design.
My personal observation is that lateral mosfet are generally more”lively” than bjt (I use one amongst the best) as output for the same topology and same bias current.
But, the USSA3B is clearly addictive
The jfet input (LSK170 and LSJ74 in current production but a bit expensive that is true) makes a difference (the only) with the USSA5B.
The imaging and separation are probably at least comparable or even better than the original USSA5 and maybe similar to original USSA3 but I do not have the latter anymore...
For example, at the beginning of the piece Drifting by Andy McKee I can hear some very extended and decayed guitar string plucks and very isolated from the rest as if it was a guitar in my living room with the other instruments in an adjacent room....I asked my wife if it was the effect of the virus to be sure.... but she also confirmed. We are both affected or infected ...
Music is smooth but details are there too.
I am sorry that you can not have more objective comments from others this time because of the confinement....
Fab
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Hi Brianco
I still can not have the feedback from pinnocchio because of the confinement so still only my personal impressions. As I said in an earlier post it is more laidback compared to USSA5 or 5.1. To that effect, I changed my DAC output opamp From AD4898-2 to OPA1642 and the overall result is less laidback. I think next thing would be to switch back to USSA5.1...
Fab
I still can not have the feedback from pinnocchio because of the confinement so still only my personal impressions. As I said in an earlier post it is more laidback compared to USSA5 or 5.1. To that effect, I changed my DAC output opamp From AD4898-2 to OPA1642 and the overall result is less laidback. I think next thing would be to switch back to USSA5.1...
Fab
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