Decreasing caps temperature from 105º to 85ºC is only affected by volume output levels and consequent shorts the caps' life.
Decreasing capacitance in these "smooth 10,000uF" caps only affect the amount of bass in the outputs and maybe (?) a little increased in ripples , but from what i listen the unit seems stable and with better dynamics. Generally adding around 10 to 20% it’s a good value. When I buy the new ones that's what i'll do.

About the caps burn-in interesting pics, that's the results of capacitor burn-in in an Elgar line conditioner mesured in an oscilloscope from a friend of mine in another forum.

While waiting to lytics arrived i'd made another sweet mod. I'd made a bypass on the Rubycons with a few Elna ( 2 x 0,47uF in parallel with each Rubycon). The idea is to have the lowest impedance in the high freqs region to assist the large PS cap. The result is a tighter, more controlled and smoother sound.

wooohooo Alvaro! keep up the good work!

Long time no see, amigo. Welcome back and tanx.

Caps arrived today as a gift from my friend Scott aka dingus. Many Tanx amigo.

Let's see if i have time today to replace these great capacitors.
I never use these new Elna Silmic caps before, they seem a lot bigger in size than most of the general 220uF/50V, let see if can accommodate them in the amp's PCB.
These are in fact an entirely new type of electrolytic separating paper is used, containing silk fibers.

my pleasure Alvaro! glad they arrived safely.

No, the pleasure it'll be mine, i hope............
Tanx.

I just started to desolder the Teapos and maybe within an hour or two i'll fire up the new caps. Even though, the Elna Silmic needs a 100h of break-in 'till they show up their real characteristics.
In theory i think i choose the right combination of caps ( after all, all the flagships from Sony and Marantz use to have them ). I mean, the mid-crisp- detail of the Nichicon Muse ES and Muse KZ with the rich/warm super smooth of the Elna Silmic. Let's wait and see.....

Meanwhile, an interesting link about the Elna's Silmic:

http://www.elna.co.jp/en/capacitor/onkyou/silmic.html

Well, i've done it. Now i'll close the amp case and listen to some sounds, and hopping everythings fine... Later i'll give my opinion about these upgrades.

I'd have changed ALL the caps in this unit. Wima MKP on the rectifier Evox RIFA on the regulators, electrolytics from Nichicon ES and KZ and Elna Silmic and even a cap bypass with two 0,47uF Elnas Cerafine in parallel on each of the 10.000uF Rubycons.

Here's some pics:

By-Pass with Elnas in parallel



The new lytics



A new perspective of the amp



The minimalist dual-mono MF design



Let's rock on.

Well, this is defenitly an upgrade that i recomend. I'm in love with this amp.
The sound has improved a lot with the Wima and Rifa caps on power supply and the Elna bypass on the Rubycons but mainly in the bass freqs. They became more clear,tight and punchy. In resume the drum kick and bass notes with more dedinition.





Now, with these Nichicon Muse ES and KZ together with the Elna Silmic II everything comes alive in the mids and high freqs. I think the word is a warm, smooth, hyper-detail lush sound. The midrange/stereo image is much more realistic and fantastic. And the highs man, are definitely like liquid silk. The sound of cymbals and accoustic guitars are awesome with clarity, decay and extension. The drum snares have an incredible attack and the voices have an analog feel and a reality that i didn't felt before.





I love my amp, again.

I want to thank you to elroy, speakerman1, socalsam, bolly and of course dingus for the input and support in this simple but gratifying small project.
Tanx.

what a cool, modern looking amp, glad you got it done, I bet it sounds better when it gets a few more hours on it.

elroy

thats some very good work. some day i might take a stab at something similar, thanks to your excellent tutorial.

Yes. The guys where dingus bought the caps recommend 100h of burn-in on the Elna's and i've been notice that. The low and upper mids are coming alive and i'd notice that mostly in piano and acoustic/ organic sounds. The analog-depth through all the album "Automatic For The People" from R.E.M. is sometimes "scary"...
Also, i've never heard the piano boogie on the left speaker and an acoustic guitar on the right at the same time through all the song - Since I don't Have You - in the album "The Spaghetti Incident" from Guns N' Roses. An hard rock album with a incredible mix and production, btw.
I'm truly amazed by the incredible detail and transient harmonics these simple mods adds to this amp...
Tanx guys.

Just an update:

When i'd change the 10.000uF to Rubycon 8.200uF i'd decreased the capacitance around 20%, well today i found two 4.700uF NOS Philips Low Loss Electrolytic Capacitors LL these are the same used on the K$ Jadis and Mark Levinson equipment!! Very rare stuff.
I'd solder them in parallel with the Rubycons increasing the capacitance over 20% from the original Teapo ones.
The image, dynamics and depth of the soundstage increased by this caps' marriage are just out of this world. The sound comes at least one meter far from behind the speakers...it seems that i have some kind of reverb in my setup. Just incredible.

Here's a bad pic ( sorry, seems like i have low batteries in the camera) I've already close the amp case but later on i'll take a better one.



Paralleling caps also has another advantgae and that's it reduces impedance and resistance of the power supply as well.

Grounding some caps

When i'd put those Philips caps and before closing the amp's case i turned it on to see if somethings wrong. I have the habit tapping all the caps with my fingers to check if some solder is loose or not and i'd notice that in three of the caps - nichicon muse - when i'd tapped them i'd listen some noise coming from the speakers...I'd check the solder joints and everything's ok I been listen to this amp ever since and it sounds great, but today i remember reading somewhere about caps cases being earthed to avoid microphonic and RF interferences, so with the wires i have at hand i'd made that on those three caps to see what happens.

There's no way the aluminium caps will accept solder so it was a case of sticking the bare wires to the tops of the lytics with sticky backed aluminium foil...

It's all a bit string and sellotape looking but mechanically sound with continuity 100%.



Now i'd tapped them with my fingers and no noise comes from the speakers. If they can picked up my fingers' tapping they also can picking up room noise around it (acting as a condensor mic). Not anymore!
I tell you this tweak really works!!! The amp sounds super fantastic!!! There is certainly a lot more to a cap than slotting it in and cranking down the lid. For now i'm not so radical to strip them nakked, but ground them, glue them, bitumen them, or put some felt pad in top of them...why not if my ears can sense a sonic upgrade?!
Later i will do the same with remain caps with thinner wires.

Grounding Some Caps II

For now it just stays like this:



IMO, one of the "secrets" of tweakin' is just making the upgrades step by step. Only with this kind of method you can truly apreciate what you're doing, and if it is or isn't an upgrade.
BTW, i'd grounded the selector switch as well.