Cap Recommendations? Bryston BP-25

[nygusx]

Anyway, are those signal caps ever necessary? I saw people just remove them (replace with wire). In worse case you will get like 50mV DC on output?

 

[Vhond]

?? Do you have pictures ?

 

[nygusx]

Anyway I've noticed one uk company is just removing them...

fidelityaudio.co.uk/bryston-bp25-pre-amplifier-upgrade-5350-p.asp

Also old SST Amps are not using signal caps at all.

 

[Vhond]

Where is the difference (I also mentioned this site, but I am wondering if somebody has gone for this upgrade path)?

 

[RickySnit]

I see that, just plain remove and replace with a 0ohm resistor, maybe one could use just some silver wire.

 

[RickySnit]

I do like their idea of a better LPS. Might almost want to consider using a din configuration on a better LPS. But I'd rather put LPS money into source components. Would need to figure out the DIN pinout too - easy enough, but still.

 

[Vhond]

Would like to know the difference between the MPS-1 and the now sold PS3 power supply (schematics, used components), its much money for a LPS... (PS3 is about 1400 USD)

 

[RickySnit]

The LPS is one thing, the cord Bryston used from the MPS-1 to the preamp and cheap DIN connector is another. I'd bet a nice performance enhancement could be had by simply replacing the cord. I purchased a Chinese LPS for another use case, ended up recapping it, adding silver wire, some other tweaks - but when you really get down to it, it is not too fundamentally different from the MPS-1. What did change the experience for me on this LPS was upgrading the cables - both mains in, but also DC out. I ended up using some nice Canare GS-6 OFC with Viborg connectors.

https://www.diyaudio.com/community/threads/lps-mods-usb-audio-pcie-card.412384/#post-7683779

 

[RickySnit]

I am interested in digging in further to the output cap removal mod. Pros/Cons. My approach would be to use 1.0mm/18awg solid core silver wire as jumpers.

 

[nygusx]

What about 100nF ceramic caps in DOA modules? That UK company is removing them, but I'm cosidering it replacing with MKP caps, because I hate ceramics caps in audio, they are microphonic and add nasty non linearities.

 

[RickySnit]

I see the 100nF disk, those are for stability and I think most guys would recommend keeping as ceramic, not sure why Bryston didn't use NP0.

 

[ginetto61]

between ceramic and plastic i would take plastic For small values i would look at what can be found in top quality phono preamps or mic preamps
A high gain can enhance different sonic signatures

 

[Mark Tillotson]

Plastic film caps may be high inductance, unlike ceramic, leading to a risk of oscillation. Depends on the construction.