A good sounding amp for my GoldenEar Refderence

How do you like the Golden Ear/Classe pairing right now? If you like your current pairing now and since you already have the Classe CA-5300 five-channel amp, you can look for a used Classe CAM-300 monoblock amps or the CAM-600 monoblock amps, which will have same sonic signature and tonality with your CA-5300 amp. And you can move your CA-5300 to power your center and surrounds. 
What is your HT preamp processor? 

CaphillI have had my 2 amps for a number of years so I really do not know how the T Ref would sound with any other amp.
I am using the Marantz AV8802A and was thinking of upgrading to their new one, the AV8805, but am not sure if this would be a good move now.
I think I may see (hear) better results with another amp for my Reference but am not sure.
Steve

Eternal it really depends on budget, personally have always felt that the Classe amps are a little on the dark side of neturality. 

The Golden Ear Reference tend  to be a bit on the warmer/softer side therefore an amplifier with great transparency and punch in the midrange would be our recommendation. 

Therefore, like Stereo5 said a warmer amp like CJ or Classe would not be our first pick, amplifiers with great transparency are Hegel, and Nuprime belive it or not has launched a new version of their older reference amps which were fantastic. 

Also there is a strong buzz from TJ anyway on the new Coda Series 8 amplifer. Coda stuff is fantastic slightly warm, just a smidge but not dark, fast clean great punch and many of their amplifiers run class A for anywhere from 5-25 watts, totally a sleeper.

Dave and Troy
Audio Doctor NJ

Agree with @audiotroy  that a more upfront, dynamic amp might be a nice marriage with the Golden Ears.  Without such an amp. even if played loudly, the GE's can sound a bit flaccid.

@audiotroy
@hifiman5
@eternalcamper

The older Classe amps are slightly on the darker warmer side and might be lacking transparency but the latest generation of Classe Delta series such as the OP’s CA-5300 amp is very neutral with great dynamic and excellent transparency and punch. The newer latest generation of Classe Delta series amps sounded very different from older Classe amps. The latest generation Classe Delta amps sounded very transparent with excellent details, nuances, speed and excel in PRAT and very punchy.

In my dedicated HT room I do own the latest generation of Classe Delta series amps such as the CAM-600 monoblock amps, CA-2300 amps paired with all B&W 800 series D3 speaker surround system and my HT system sounding massively dynamic with lots of dynamic headroom, excellent details, transparency, clarity, speed PRAT. Actually these latest generation Classe Delta series amps excel in details, transparency and speed.
And the noise floor is unbelievably low. Very quiet design amplifiers especially the CAM-600 monoblock amps.

However, I have never heard the Classe amps paired with some Golden Ear Technology speakers before so not sure how they would pair. Well, the OP apparently has been using the Classe CA-5300 five-channel amp, which is the latest generation of Classe Delta series amp, to drive his Golden Ear speakers. But I personally have never heard the pairing before. All my Classe Delta series amps (latest generation) are paired with the newest B&W 800 D3 speaker system in my dedicated HT room. They sounded great together. Not sure how the Classe would sound on the Golden Ear speakers.