• Jan 15, 2026
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EarAcoustic Audio STA-Hi End: 2DD IEM Headphones

Reviewed by Headphones and Coffee

Source: Head-Fi

 

ProsThe really fun lower end is enjoyable and rich sounding midrange are icing on the cake.
ConsLooks may be a little too much bling for some, not the most technical performer

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Specification:

Driver Configuration: 10mm Ultra Clear Analysis Dual Magnetic DLC Diaphragm + 6mm Composite Diaphragm Dynamic Coil Unit
Sensitivity: 110dB
Impedance: 30 ohms
Frequency Response Range: 10-30,000Hz
Wire Specification: 0.78mm Dual Pin Oxygen-Free Copper and Silver-Plated Wire Mixed Weave, 1.20m

Inside the Box:

1 x EarAcoustic Audio STA Hi-End Series
2 sets of wide and normal bore ear tips with 3 pairs each
2 core cable
Hard shell carrying pouch
User Manual

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Ear Acoustic audio is TFZ, a company I once was a big fan of.
Opening the rather large box one finds the very nice-looking IEM and a big round case, included like above is the tips and the cable and documentation.
The shape reminds me of the great KBear Diamond from the past. I found it fit my ears well and provided good isolation and comfort.
Sound wise I find it very similar to the other EAA I tested the STA-K, I think this one offers a little finer tuning and details, but both are fun.
The Bass of the Hi-end is well delivered with a nice impact and minimal distortion. I find both Sub and Mid Bass well implemented and akin to a nice set of full range speaker with a sub. The Bass is nicely textured, and Sub is a small distance from the mId making the MidBass stand out in clarity. Speed is average and there is little bloating to me.
The Midrange of the STA is amazing; it has little to no recession despite this being a bass set. Vocals stick out for being well bodied and rich/ smooth like silk. Both Male and Female vocals are very pleasant and sound quite natural.
The Treble of the STA HE is energetic and has a nice crisp presentation with decent air and openness. Instruments a clearly head and it has good separation.
The Technical side of the IEM is presented above average with a moderately wide soundstage and a little more height than depth. imaging and accuracy in general are good.

In a nutshell: The Ear Acoustic Audio (TFZ) is a well-rounded Bass driven IEM with good performance for cost and it looks fancy too!

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