Okay, let's try this: any reason this Bartolini 3.3 preamp harness won't work? http://www.bartolini.net/information/ha ... hr_3_3.htm Thanks Riis

NTBT preamps are what we used to use prior to 2000. They are a great sounding preamp. That's a pre wired harness with a blend. You can either install it as is or replace the blend with your rotary switch. Sourcing knobs will be a pain due to the stacked concentric bass/treble.

[quote="Sheldon Dingwall":2v5g1rgp]NTBT preamps are what we used to use prior to 2000. They are a great sounding preamp. That's a pre wired harness with a blend. You can either install it as is or replace the blend with your rotary switch. Sourcing knobs will be a pain due to the stacked concentric bass/treble.[/quote:2v5g1rgp] Thank you. I also found an Audere 3ZB (?) pre which will fit the bill. It also some options (Z switch, mid-center trim pot) which can be tucked into the control cavity if unused. Will the standard AB I Neutrik locking input jack accommodate the transition to active configuration? Riis

Yes it will.

[quote="Sheldon Dingwall":3dinvqgm]Yes it will.[/quote:3dinvqgm] Thank you...and in recognition of your participation, I'm going to drill a hole dead-center through the cavity plate's swoop "D" to accommodate the LED battery indicator. Riis

Not an ABI, but I installed an Audere to my ABZ. I really like it

[quote="Zooberwerx":347fmhhl][quote="Sheldon Dingwall":347fmhhl]Yes it will.[/quote:347fmhhl] Thank you...and in recognition of your participation, I'm going to drill a hole dead-center through the cavity plate's swoop "D" to accommodate the LED battery indicator. Riis[/quote:347fmhhl]