As this review comes up quite often when you look for the Westone Mach Series (especially as it is one of the few that provides measurements for all IEM from 10-80) i noticed some things that might could clear up confusion i also often see.
The Westone Mach Series is divided into three lineups
- Entry --> They try their best^^
- Bass (I would rather call it warm) --> Stage Monitor
- Reference --> Studio Reference Monitor
There is also a nice graphic from Westone itself
This Review puts them into the categories 10/20/30, 40/50/60 and 70/80 and i totally understand why, looking at the accessorizes/cables and stuff, but that is actually not how they are intended to be considered.
So its basically a budget decision. The 80 gets you closest to an studio reference sound, the 40 is furthest away while still tries its best to be usable as a Studio Reference Monitor and the 60 is in the middle.
And if you look at them that way, the price progression suddenly starts to make sense.
Also i agree with
@SOAREVERSOR with the exception that even if you don't make money with them, i think you can enjoy them a lot and they are still easy to recommend given the correct context. These IEM need explanation, what exactly do they, what are they made for and with that, people have an better chance to decide, if this is something they want. Because they are objectively excellent, just not subjectively to people who are used to Harman.
As the Mach 40/60/80 are Studio Reference Monitors, it is important to compare them with other Studio Reference Monitors IEM (Vision Ears VE6X1, VE7, Shure SE846 (White), FitEar TG334), Headphone (Neumann NDH-30, Sennheiser HD 490 Pro) or even better, Speaker (Neumann KH 120 II, PreSonus Studio 8, Yamaha HS-8 and so on) and when people never heard such studio reference monitors, that it is important to take time to get used to this signature and accept that its different and not an instant "Wow, this sounds amazing" but rather an "Aaaah, i get it. Now where the initial shock is over, i can finally focus on what they are able to do that is not possible with what i had until now".
If you buy an MACH 80 as an pro, your expectation is that when you mix/master something with it, you can transfer the master to another Studio Reference Monitor and everything still sounds exactly as it should sound. For this price, the expectation of an audiophile is an out of this world sound stage with in your face details hearing the pulse of the singer and an bass that makes your whole body vibrate through your bones.