| We shipped the new Purple Audio Pants Preamp
and the new version of the Biz - The Biz Mk.
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The Pants uses four op amps, 2 class A KDJ3, 2 class AB KDJ4 op amps.
It is differential ( balanced) throughout. The DI uses a FET input to drive the transformer unlike our Biz that has a transformerless DI, it also adds a DI termination switch 100K or 1M. This will give some instruments a change in tone.
The Pants has the same output transformer as the Biz but uses a different input transformer. The input transformer is a Cinemag Mic Output transformer repackaged for PCB mount. The Pants has a High button that changes the feedback/gain range on the input amplifiers.
The Pants adds a Mic/line switch that flips the windings of the input transformer. This allows it to be used in mixer configuration as a line input or as a Pad for high output mics. 150R:9K6 or 9K6:150R
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The Biz Mk is the same circuit as the original Biz but adds the DI termination switch.
The stock Biz had a 33K ohm load on the DI the Biz Mk switch allows this or 100K.
The Biz Mk also adds the same Mic/Line switch as above. 200R:10K or 10K:200R.
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The mic/line switch main inspiration is to allow the Biz Mks and Pants to be used with line input on our Moiyn 8x2 mixer in our sweet ten rack.
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