The Levinson Sound?

I had a 336 which I really liked, but after replacing the caps I sold it and tried several different other amps.  

I could have easily lived with the 336, but now have JC1 mono's which to my ear are a little more lively and open than the 336.  Neither amp will fatigue and both are fantastic.  The 336 is the best of the 3xx series IMO.

Good luck.

To add to 68pete's comments on the 336, it absolutely suffered from the same capacitor issue as the 331-333 models.  All 33x amplifiers did.

later MLevinson rectified and released the EXCELLENT 334,335 and 336 already with other capacitors, no longer suffered from this problem

Wrong.

Ok . 336 two channels

Correct.

the power cable on the 335 is not rigid, it is replaceable by any other.

Wrong.

excellent amplifiers , 334,335 e 336 

Correct.

again I repeat, that only the first series 331,332 and 333 are equipped with PHILIPS capacitors

the series 334, 335 and 336 the problem was solved with other capacitors, in Portugal who has this series has not yet repaired it.

Happy Listening ! 

And once again you are wrong.  My 336 caps failed which I returned to Levinson for repair and was told that ALL 3xx amplifiers suffered the same issue.  It's not the caps themselves, it's the way they are used in the circuit which shortens the life of them.