hi there, 'scuse me if i've posted in the wrong place but although i've been reading head fi for quite a while i'm a new member. until such times as i can get my hands on one, or have reviews to read, i'm down to looking at the pictures. i will have the chance for a friend to bring back from china a head amp and i like the looks of the XuanZu u202 has anybody got any experience of this amp? and if so could you share your opinions of the build and sonics. thanx
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I got one too ... rolled it with various 6AS7, 6080 from cheap RCAs to WE 421a/5998 ... headphone used are AKG K142 and K7XX.
Swap out all the stock Chinese tubes including the magic eyes with German Valvo EM87 tubes...got another set from Mullard EM87
The pre tubes I have used so far...GE 5stars 5670..GE JAN 5670 ...JW 2C51 Western Electric ... Russia Duet 6N3P-DR
It sound different with different combinations of pre and power tubes.
Its a nice little amp but does have a problem...very very hot ...when it over heats it will auto shut down.
If your listening room is like mine without any air-conditioning it probably will only run for 1-2 hrs max at night.
I think is a good thing it protects itself from damage.
I notice it does run cooler with the stock tube and Russian 6H13 but again not more than 2hrs of continuous operations.
I have over heated an amp (another similar amp) and blew a component inside.
For now I placed a small USB fan to keep it cool so now I get it run over 3 hrs without problems.
My CD source is a Bada HD-23SE Anniversary Edition gold color...almost same gold color as the u-202.
Edited by waltertlc - 7/18/15 at 10:10am
Let me know if which tube(s) you want to know. I am still looking around for other tubes to try.
I got a pair of RCA command 5670 on the way to me.
I still looking for a pair of lower price Slyvania Gold Brand 5670/2c51...prices are getting higher and higher.
My best tubes cost more than the amp itself~! crazy man.