Modifications to integrated tube amp: experiences?


Hello Knowledgeable Audiophiles,

I am seriously considering having my Onix SP3 modified.
(I don't know why people sell these amps. I love what it does.)
Does anyone have any experience with the modifiers out there (e.g. Parts Connexion, Hot Rod, or others)?
Who would you send your amp to?
I await your replies and thank you.
rhanechak
Just wondering,if you love what it does,why do you want to have it modified?
The SP3 is a very detailed integrated, and I have been told that modification will improve the detail.
Also, if the modification will amplify, if you will, the characteristics I like that is to the good.
It can't hurt to have better components installed in an integrated I may want to keep for the rest of my life.
I have used Parts Connection on Shanling mod... he did a good job. Took a little longer than I expected but the out come is very favorable.
What I'm really looking for here is recommendations and experience with so I can decide who best to do the modifications.
I would recommend Referenceaudiomods.com... Kyle does great work..I can't be happier with my Cary PH-302.Located in Califorina