yaqin mc100b upgrades


hi all,

ok i have this excellent amplifier and i`ve done some tube rolling. the best tube combination i`ve found are....

shuguang treasure kt88-z x 4
rca vt231 x 2 in v1 and v4
brimar 6sn7gty/cv1988 x 2 in v2 and v3
telefunken 12ax7 smooth plates x 2

i`m looking to make further upgrades to enhance the sound further. has anyone done any internal modifications on this amp in the way of capacitor changes? and did these mods make a good difference? and are there any other worthwhile modifications that have made a difference to this amplifier?

many thanks in advance guys

i`d love to hear your experiences and thoughts
grayf
aha i don`t think anyones modded their amp. ok any recommendations on decent capacitors i should look out for? any info will be great guys. i`m a newbie to tube amplifiers
There are many thoughts about various Chinese amplifier designs, some have a habit of using too many resistors or people feel the best option in some cases is to remove some resistors altogether, or replace certain resistors with small capacitors.
With Yaqin’s 100B I think they generally got it right, no doubt it’s possible that small improvements can be made in some area’s, but you must be real sure of what your doing! If people want improvements then the first step is to dump those Shugang bottles & buy some decent one’s, that’s the best route for improvement, as you have already done this I would say just sit back & enjoy your amp.
many thanx for that drastic88. i did make one more change to the tubes. i bought a pair of golden dragon E83cc/12ax7A and they gave me the same gorgeous bass that i love but added more detail and textures throughout the frequencies. the funny thing is the golden dragons are the cheapest by far 12ax7`s i have used in this amplifier. with the sound i have now i don`t feel that bothered by making any further upgrades. the only upgrade i will be making is to the speaker cables that i use. at the moment i`m using chord company oddessey 2 cables and i will be going up a notch by using the same companies epic speaker cables which will apparently enhance and improve on the sound i`m getting now. oh happy days! long live tube amps!