SparkoS Labs SS3602, Burson V7, MUSES02, OPA2134PA

Replacing the stock Op Amps of my ZA3 Mono Amps with the Muse02 Op Amps was a definite improvement. I replaced the Left and right channels and the XLR's Op Amps. The Muse02 size and very small delicate pins were a bit of a challenge to insert without bending the pins. The LED power light had to be realigned. That was somewhat frustrating. So be very very careful. Worth the upgrade.

After watching numerous YouTube video reviews of the amps and the op amp mods I was curious enough to try these mods myself. Yhey did make a difference but also doubled the cost of the amps on theor own. I simply put it down as an educational expense. I’m very pleased with the overall results as well as the responsiveness of Fosi’s support team to my rather lengthy help requests.

It’s now very interesting to watch the continued development of Fosi’s social media engagement and product line expansion. I’m a very happy Customer!

I'm restricted from listening how I would like but I will say it sounds so good you can almost taste it. The air and placement of instruments are more prevalent than I have heard with any of my setups.

Subtle but audible difference, relaxes my V3 a bit

Never got it.