Lol, just burn-in the brain
Amp4S is definitely a more musical module, or perhap the most musicality accross all the amp modules that I have up until now (I don’t have amp2 or 5). Very nice! While amp3 and amp4 was almost similar, the amp 4s is like different sound signature. The fastest amp modules I have seen is the amp4, then next up would be amp1. The amp1 is fast, but doesn’t offer the performances the amp4 does. The amp4 is like amp1+amp3 together, super fast, and good performances. The amp3 was so welcome by dx200 owner because it had that performances of details, resolutions, soundstages and better musicality in comparison to amp1.
The amp4s is like the amp3 with added musicality into the sub-bass, bass, mid spectrum including the more vivid vocal details and extensions (female vocal is to die for). The sub bass is better rumbles, and mid bass is with better blooms. Over-all, the amp4s is also the most warmed signature in comparison to the whole bunch. Did Ibasso read my mind or what ? I was bored and tired of the very similar signature from amp1 into improved amp3, and faster speed amp4....but sharing similar signatures of being neutral.
For some reasons, the amp4s can also drive Hd800s well enough to an acceptable level. Yet, it is not as refined as 1Z, but is very acceptable. Now I can do Hd800s on either dx200 or 1Z
. I am very happy
Do not mistaken the amp4s for being overly warmth, nope. It is a very slight touch of warmth that can be observed when compared to other modules. But in general, the amp4s can be said to be Musical, fluidly and still neutral IMO.