This is the best sounding audio investment I ever made in my almost 50 years of being into this hobby - period.
My statement may sound ridiculous for something only costing 32€ shipped, but don’t let the price bias you into dismissing this 7Hz x Crinacle Zero:2 In-Ear.
Three years ago, after I had to re-store/glue the decaying shells of my now 20 year old Shure SE425‘s, I actually eyeballed Sennheiser‘s IE900 after auditioning all the In-Ears I could lay my hands on during the Munich High-End-Shows, but had talked myself down to the not too shabby IE600 for half the, still hefty, outlay.
Finally three days ago, the extraordinary online measurement results persuaded me to just give them a shot for chump change, and wow, do they sound clean, clear, sweet and refined across the board with seemingly limitless dynamics and extension at both frequency extremes.
Their linear impedance makes them an easy to drive load for the head amp, so an also incredibly cheap USB-C 384kHz/32bit dongle DAC and USB Audio Player PRO with Qobuz just blow me away for hours on end …
Took about five minutes to choose the best sealing ear tips to get optimum bass response.
Absolutely highly recommended for everyone to find out that there have never been better days in state of the art audio reproduction!