What type switching is in an original Marshall Bluesbreaker? (Black Box)

[sevenisthenumber]

Can someone give me some info on how this pedal bypasses? Is it true bypass? Millennium?

[frankclarke]

This (input always connected) kind:
http://www.google.ca/search?q=+bluesbreaker+schematic

[sevenisthenumber]

Is this considered good or bad? Does it suck tone?

[frankclarke]

Should be OK, high input impedance.