Cornell Dubilier Capacitance Box

[Mickey]

Can these be used as a substitution box? They appear to be very different to my other resistance and capacitance substitution boxes.

[Helmholtz]

Link, pictures, specs, datasheets?
For what application: Tube amps or SS, high or low voltage?

[Mickey]

Hi Helmholtz,
I build amplifiers and guitar associated items, mainly using valve/tubes operating at approximately 399V DC.
I wish to experiment with coupling and bypass capacitors and have done so with a Heathkit Capacitance Substitution box but require another box to operate two circuits simultaneously.
I usually apply a 1000Hz signal which I view on my oscilloscope.
I have been offered a Cornell Dubilier Capacitance decade box and I'm wondering if this box is suitable for my experimenting?

[Mick Bailey]

They're usually 600V DC, 220V AC. The voltage should be printed in the control panel.