If your into vinyl records, reel to reel, analogue cassettes - you must have an Orb in your collection.
They're smooth all the way to the relaxed treble, perfect for trad. jazz, pop standards, ambient, chill hop.
Sedna earfit the standard grey stem tips seem to be besties with the Orbs.
Other tips that work very well include Spiral Dots original, Spiral dots ++, Azla crystal.
Each Penon release complement each other, not boxing out against one another as the Serial has proven (again).
I may have the Volt - but the Serial, if there is such an expression "giant killer" - if this truly exist, then the Serials should be IN THIS LIST...