SS3602 Discrete Op Amp Reviews Vs DEXA.
By Antonio Solaro
The SS3602 is really a no-brainer in every aspect while the DEXAs turned out to be more of a mixed bag, at
least when trying to fit them in an electrically quite demanding environment as my balanced preamp. The
differences are not night & day, but I was able to discern them right away and to repeatedly reproduce them.
The SS3602 impressed me with its effortless yet authoritative, clean, seamless and natural presentation of
any kind of music. Lively, neutral, but still full- bodied without any limitations at both frequency ends.
It really does not stand in the way of the music, leaving everything intact and connecting every detail to
a picture which is more of the sum of its parts, because it retains the feeling and atmosphere of the music.
The best thing is that these capabilities were not depending on the position in my preamp
The DEXAs reacted very differently on the place in the preamp i tried them. While sounding neutral and very
detailed in the input section, they got increasingly lean, grainy and constrained sounding the more i moved
them towards the output of the preamp. Over all by comparison even LM4562s were more convincing in these
critical spots than the DEXAs. As far as I can tell, the DEXA’s problem is the low (limited) output current
which does not make them the ideal candidates for line driving purposes (preamp to power amp).
The might fare better in an electrically less demanding surrounding, as in a DAC output stage or in a
CD player, where usually no gain is applied and the load is easier to handle.
The SS3602 in electrically demanding applications keeps it wonderfully balanced
and fluent presentation of whatevers is sent to it.
If DEXA would publish the specs of their opamps I’m sure one could find further evidence for their limitations.
So my favourite is the SS3602 and I’m really impressed by your work and also the build quality. Their size
makes them an easy fit. Both sonically and electrically they provide outstanding performance. I had expected
much closer results in my comparison. I’d like to buy 3 more for my preamp. Please let me know the bundle price
for these additional 3.
Again, congrats for your excellent work. I hope you will find many more enthusiastic customers.
For More about Sparkos Labs Discrete Op Amps, go toDiscrete Op Amps