Es scheint, dass die meisten Klone, die derzeit anderswo erhältlich sind, auf einem leichter zugänglichen Schaltplan basieren.  Viele Spieler (und anscheinend auch Erbauer) wissen nicht, dass es ein paar Schaltkreisrevisionen gab, während das Originalgerät in Produktion war - eine war weicher und wärmer, eine war zu hell und wirklich hart - was bedeutet, dass es ein Toss-up für Leute ist, die $250+ für das Originalpedal bezahlen, wenn einige besser sind als andere. Dies ist ein Klon der wärmeren und glatteren der beiden Revisionen - diejenige, die geklont werden sollte.  

It seems that most clones available elsewhere at the moment are based on a more readily-available schematic.  A lot of players (and apparently builders as well) don't know that there were a few circuit revisions while the original unit was in production - one was smoother and warmer, one was too bright and really harsh - which means it's a toss-up for people who are paying $250+ for the original pedal when some are better than others. This is a clone of the warmer and smoother of the two revisions - the one that should be cloned.  

Snouse Electric Co.

Demo by The Tone Unknown

Demo by  So I Found This Pedal

Product Page

Review by The Gear Page

Blackbox Overdrive Classic

The BlueLine Professional Overdrive blows the original BluesBreaker out of the water, with unique features that give you much more tonal flexibility, variability, and control. 100% analog circuitry with 3 clipping diode options to explore - wild, glassy and dynamic Light-Emitting Diodes; silky smooth Silicon diodes; or light, tight and organic new old stock Germanium diodes in an asymmetrical configuration - that, in addition to an interactive tone section, introduce singing harmonics that shine through natural compression for a beautifully complex, notably tube-like color, with the delicate, detailed feel, touch-sensitivity, clarity, and dynamic response of a vintage JTM45 amplifier. 

Official Product Video

Demo by Pedals & Friends

BlueLine

A hand-wired, 100% discrete analog, natural tube-emulating overdrive, clean boost, and tone enhancement tool with a proprietary, completely transparent tube-emulating variable and switchable JFET pre-gain clean boost control to push your BlackBox into high gear, or to squeeze more volume or fatness out of the front end.

Review by guitar pedal X

Demo by Ryosuke Otsuki

Demo by Neil Gregson 

Demo by Andertons 

Black Box Overdrive 2

A hand-wired, 100% analog, natural tube-emulating overdrive, clean boost, and tone enhancement tool with a proprietary, completely transparent tube-emulating variable and switchable JFET pre-gain clean boost control to push your BlackBox into high gear, or to squeeze more volume or fatness out of the front end.
Features three switchable circuit modes - Standard (Hi-Gain), Classic (Lo-Gain), and Clean Boost.

Blackbox 2