A package from Hong Kong arrived yesterday. In it, there was a pair of Celsus Gramo One earbuds (I bought from bigbargainonline on Ebay, which is the same as Penon Audio).
How do they sound? Well, I have never before heard such neutral earbuds. Completely transparent and no coloration at all. When I compared them to Blox TM7 and other expensive earbuds, everything sounds very colored and EQ'd compared to the Gramo One. I love the fun factor in TM7, and the Gramo One are so flat that they almost sound "boring" when you come from a pair of more colored earbuds.
I'd have to say that the Celsus Gramo One truly are reference earbuds. Nothing really sticks out, ie bass, mids or treble. Everything is in its perfect place. Still they are very detailed and soundstage is very wide and deep. The only small complaint I have (except for them being too neutral and transparent) is that soundstage is not as tall as I would want.
Are they worth $249? Well, they are not $100 better than Blox TM7 or VE Zen 2.0, just different. They should cost no more than $199 and they could easily cost $150 considering the only accessories included is a leather pouch and a few donut foams.
One interesting thing is that the earbuds have got a vent in the back and if you cover it with your finger the sound changes completely, ie bass disappears and soundstage collapses. I have never before encountered earbuds with such an open design.
(Not my photo):
If you are looking for the perfect neutral and transparent earbud, there is only one current option: Celsus Gramo One. If only the price only could be lowered to around the same level as other high end earbuds (around $150)...