Can you swap Brand A for Brand B?

Hi Jeff - sure you can. It is quite common for folks to swap out components for higher quality units to improve sound; not only on kits but on manufactured gear also. Some of the things you could look into is swapping coupling capacitors for better ones, signal path resistors for better ones and rectify diodes for ultra fast/soft recovery types.

Make sure you keep the values the same and do not go lower on the voltage /wattage rating than the component you swap out.

Regards
Paul

Jeff, I do not know of any books that pertain specifically to tweaking/modding amps.

However there is a lot of information on the net. Arthur Salvatore has a nice intro into modding tube equipment, which you may find helpful when starting out. I found a lot of useful information on bulletin boards and many time builders (both private and commercial) give tips on their web pages.

Also there are a couple of capacitor shootouts on the web. Have a look at http://www.vhaudio.com/21capacitorshootout.pdf and http://diyparadise.com/cap/dare_to_compare.html. There are many more.

Regards
Paul

Hi Jeff – seems I have pasted the URL for the same article twice. Here is a shootout on some electrolytic caps. http://diyparadise.com/cap/dare_to_compare.html.

If you go to partconnexion.com you’ll find some very good white papers on black gates. I have used BGs in the past and generally liked them.

I generally prefer to use motor run capacitors in my power supply stages. ASC makes some nice high value high voltage oil caps that are waaaay better than any electrolytic caps. Downside, they are as big as soda cans so you need a big chassis to use them.

Note, like anything else, choice of caps is somewhat subjective. After many years of tinkering, I now have a fair idea what is going to work for me.

Regards
Paul