2. amps-preamps
  3. 195215-189789

op amp rolling

https://photos.google.com/photo/AF1QipO7mVKfzW_dSV5rxCvMv4z2gwdtk1cLM3eSFhIy

I have a setup for a send system that I have been playing with to see what I can do on the cheap and I've been quite surprised at the result so far. I've been reading about supposedly major improvements in performance of the Fosi ZA3 amps with op amp swaps. I'm wondering if anyone else has had any experience with the various ones available. I'm running the dual mono with XLR on each speaker bi wired to max the power which means I'll need three per amp which will cost more than the amps so I'd like to get it right the first time if I can. I'd like to take some of the sibilance from the top end which some I reckon comes from the nature of the speakers (Klipsch RPM 600II). Any opinions/advice would be most welcome. I'm looking at the Burson v7 vivid and the sparko but the sparko has been reported as softening the ZA3 too much which the reviewers on youtube seem to like for the V3 mono but not for the ZA3. I have attached a link to the setup because I cand figure out how to attach the photo to this forum. Thanks in advance

johnnybwood
bigshutterbug
390 posts
 

Your Klipsch RPM 600II  are a very forward sounding, lively speaker. I would choose an op-amp that warms things up a bit, and maybe an R2R DAC to help make things more listenable.....Better yet would be to sell the Fosi amps and upgrade to a beautiful sounding, lush tube amp if you want keep those speakers. 

buellrider97's avatar
buellrider97
644 posts
 

My apologies for being off topic , I have a modded Akitika G-102 paired with a Rogue RP-1. The combo of a tube pre and the ability to roll gives me a considerable latitude in regards to tone. I’ve powered Klipsch Heresys and Zu Omens with great results. I wonder how a tube DAC might fit your need. I’ve not played with your speakers but I see a lot of crossover mods done. Happy Listening, Mike B. 

g2the2nd
212 posts
 

The speakers are forward/bright. I’ve heard them. Great initial audition, bad hard on long term listening sessions.
 

I’d keep the Fiosi as is for now and upgrade the speakers.

johnnybwood OP
59 posts
 

second system! sorry-typo on original post!

 

johnnybwood OP
59 posts
 

I will say that the system is quite a departure from my main system which uses electric static speakers and Macintosh gear, but I don’t want to reinvent the wheel. I’m just having fun with this all digital system in a simplistic set up.That being said, I don’t wanna be reinventing the wheel here. I’m quite happy for right now to work with what I’ve got. I actually like the way the system sounds for what it is. I just wanted to tame down the forward brightness of the clips in the class D apps with maybe some mellow or sounding op apps. if anybody out there has done it I’d love to hear about it. I'm getting into streaming and probably will inegrate it into my main system but for now I'm enjoying the simplicity of this system and checking out new music. I like tinkering with equipment so I thought it would be fun to mod the amps.

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