Cool cb3489. I am not far, in San Gabriel area. Thanks for the offer. I will surely swing by one of these days. 
@charles1dad 
KEFs are amazing but Tekton is more detailed and more wider sounding. old vs new perfect example. KEFs each crossover has 13 capacitors and multi stage filtering vs simple crossover with 3 mundorf oil capacitors. My friend brought 1w old Decware amp. These power hungry KEFs both 104/3 and 105/3 did really good too we were surprised. But again Tekton was little more detailed and natural. I also added Tekton 4-10 sub to tekton perfect set 15s. I love lots of bass low volume :)
@cb3489, 
 I thought that the Tekton Perfect SET speakers would be a wonderful match with your 300b SET and happy to know this is the case. I'm sure your music reproduction is gratifying and very engaging. 
Charles 
How bass different from X7? Not as emphasized and more definition since it is SET compares to PP? Mid warmer and more holographic with X9?
@slowestrider i am new to hifi i only experiment 18 months in this hobby. But what you said sounds correct. Kt88 push pull to my taste won against Cambridge audio azure 851a. So i sold azure. Now between kt88 push pull vs 300b set i kind of feel like  the same comparison as azure but not as much. So i feel lucky to have both x7 and  X9.