Nice to see Meridian improve the design. Much better now, but it still needs to be said the Explorer remains not an optimal choice for most IEM users. An output impedance of 5 still not good enough; for example iPhone 4S (~1ohm) sounds clearly better with IEMs than the iPod Classic (~5ohms) with 16 ohm armatures with a wildly swinging impedance curve. IEM users are still better served by other products, but Meridian has increased compatibility a lot and kudos for that!
Tyll: Thanks for the great article. I have a technical question: if a low-ohm output amplifier shorts (and most likely breaks), will it damage connected headphones too or is the damage restricted to the amplifier?