64 Audio U18s

Eartips selection.

The selection of eartips is crucial to any universal in-ear monitors and will affect the sound, especially the bass impact depending on the seal.  Due to a large opening of my earcanals, I usually go for the largest size eartips to get a better seal.  Also, please keep in mind, eartips impressions are subjective and will be based on anatomy of your ears.  Here, I was analyzing the sound using LPGT, M20 module, and stock cable.

SpinFit (stock, baseline) – deep bass impact, natural clear vocals, smooth detailed treble.

Silicone (stock) – more bass impact, smoother mids/treble, mids are slightly recessed.

TrueFidelity Foams (stock) – more neutral bass, more forward mids/vocals, even smoother treble.

Final Type-E – a touch less bass impact with mids/vocals being slightly more forward, and treble being just a little brighter.  Good alternative if you want to make sounds a little more revealing.

AZLA Xelastec – similar to SpinFit but with a little more bass impact and rumble, and bass having more authority.

Symbio F – similar to Type-E where mids/vocals are being a little more forward, but the bass impact remained the same as with stock SpinFit.

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Cable pair up.

I’m aware that some people don’t believe in cables and have very strong opinion about it.  It’s not my intent to change those minds.  Instead, I’m just sharing what I hear during my testing.  What makes sense to me, a metal wire is a material with physical properties of resistivity, conductivity, purity, and unique geometry, all of which put together act as a filter between your source and headphones.  Variations of these physical properties can affect the conductivity of analog signal, resulting in a sound change, from a subtle to a more noticeable level.  If the talk about cables upsets you, please skip this section.  Otherwise, enjoy these short impressions.

w/64audio Premium Silver hybrid – signature is W-shaped/balanced with enhancement of lows (more control, better articulation, faster), mids (more revealing), and treble (more sparkle).

w/Eletech Iliad – puts a little more emphasis on bass and treble, feels like tia drivers gain back some of their lost sparkle, but overall, it also makes the sound slightly U-shape due to perception of mids/vocals being a little behind.

w/EA Leo II octa – signature is W-shaped/balanced with enhancement of lows (more control, faster), mids (more revealing), and treble (more sparkle), very similar to 64audio premium silver cable.

w/PlusSound PPH8 – not much changes related to a sound sig, but I do hear more sub-bass rumble, mids remaining the same, being smooth and natural, and treble gaining some sparkle.  Soundstage did expand a little more.

w/PWA 1960 4w – puts more emphasis on bass where I hear more sub-bass rumble and mid-bass impact, mids/vocals remain the same, maybe just a touch more revealing, and treble has more sparkle.

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Page 5 – Comparison, Source pair up, and Conclusion.

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