whirlwind
Headphoneus Supremus
The only problem with the Blue Halo is the wait time for a build.
I typed with Mischa about 3 weeks ago and the que is nearly a year.
I've not heard any of his amps yet, but by all accounts he builds great sounding amps
That is the draw back for getting custom amps, the wait time can be painful.
I always felt that it was worth the wait though....I just listened to something else until the day finally came.
Some custom builds that many people want have a stuffed chassis full of goodies and any and all options available it seems.
It is not necessary, but many people want that so these custom guys do it, which is a great thing for the consumer.