And now for another appreciation of KZ's greatness...
I built myself an amp to use almost exclusively with my ATH-M50.
But the other day I decided to test some IEMs. Boy, do they sound differently when properly amped...
Concerning the KZs amped via this modified RA1 clone with different caps, connected to my X3II (dock line out):
- ZS5 (v1): scales really well. The awesomeness just gets better;
- ZS3: wow! I really didn't care much about these until I started using different wide-bore XL silicone tips, silver cable and a better DAP/AMP. They opened their sound, lots of bass, good highs, good mids, good soundstage, great IEM! I love them now (that is, until I connect them to my smartphone again...).
- ED9: For 15 minutes they are ok. From then on they start to get tiring with their piercing highs. But the bass gets really boosted with this amp.
- ATE: I love the ATE in every way. For me, the best KZ ever regarding quality/price/design/comfort. Amped, they get somewhat congested with more dynamic passages, but maintain the lush mids, the sweet sweet female voices, the good grip on the bass. Use with jazz, classical, etc.
- ZSE: crap when amped... they sound tinny and hollow... and I really like them otherwise.
- ZST: very good. Sounds about the same when unamped, maybe a little bit bassier, but with the same resolution and wide soundstage. A great combo with this amp.
- EDSE: not much diff.
- ED12: still the worst piece of %$#%$ KZ ever made. IMHO!
- IE80: the treble gets really weird. Boosted in all the wrong places. (directly through my X3II or S5, or Topping NX2, they are one of the best KZs. They didn't get along with this amp)
- EDR2: the bass keeps falling short. These would be great IEMs if they had just a little bit of subbass...
- HDS1: meh...
- ATR: dullness amplified
Notice that this appreciation is done exclusively with my DIY headphone amplifier.