2. amps-preamps
  3. 139744-2029

CJ Premier 17LS2 vs ET5/7

Hi,

I enjoy a Conrad Johnson Premier 17LS2 that is paired with a McCormack DNA 500 and Thiel CS5 speakers.

My problem is that the 17LS2 has an output impedance that can rise to 1600 ohms on the low end. The DNA 500 has an input impedance of 10,0000 ohms so I suspect that I am missing the last bit of bass. 

When I listen to other preamps with a lower output impedance, the bass goes a bit lower, but I sacrifice musicality and nuance.

My thinking is that, if I like the CJ sound, an ET5/7 with 100 ohm output impedance would get me that last bit of bass without losing the musicality and nuance.

Has anyone listened to these preamps and can tell me how the ET5/7 sounds compared to a 17LS2?

Thanks for listening,

Dsper
dsper
dsper OP
663 posts
 
hi pops,

Thank you for the info. The 17LS2 has the Teflon caps and it is very good. I inserted Phillips ECC88's and they seemed to clarify the sound - more clear.

Thanks for listening,

Scott
kw6
692 posts
 
Have any you guys heard the ET-3SE? How close is it to the ET-5?
jafant's avatar
jafant
19,580 posts
 
kw6
I have heard the ET-3SE mated w/ the Classic -Sixty power amp in a B&W / Audioquest system. The sound was liquid and sweet from top to bottom. Very musical and pleasing sound.  The ET-5 is on my list to demo.
Happy Listening!
johndinius's avatar
johndinius
23 posts
 
I have a CJ MF2275 mated to the ET-5, I moved up from the ET-3SE. Both pre’s are very good, but after settling in with the ET-5, I don’t see any need to change my system anytime soon. I am very content with my primary system.

though I am working on my second system. I might really like this hobby too much.
kw6
692 posts
 
Thanks for the input guys!
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