This guide is for Billie MK2 only.There is no way to boost Mk1’s input.
The 4.5dB boost will accommodate 2-3mV low-gain MM cartridges. This won’t work for MC cartridges, as their input load isn’t 47K -you’ll need a step up transformer for that.
Please read instructions carefully and heed all warnings. If you need any assistance don’t hesitate to contact us
ATTENTION | FAILURE TO FOLLOW THESE INSTRUCTIONS CAN DAMAGE YOUR AMP. THESE DAMAGES ARE NOT COVERED BY THE WARRANTY.
– Before you begin, ground yourself by pinching the grounding screw on the phono input. This will discharge any static electricity from your fingers which could potentially damage the electronic components of your amp.
– Unplug your amp. Unplug your amp and remove the tubes. Wait for the tubes to cool before attempting to remove them.
– Choose your workspace. To protect the brushed finish, flip Billie on a soft surface [like a cushion or the foam rails the amp was packaged in].
How-to Video
Instructions:
1. Unplug Billie and flip on a soft surface. Above, we used the foam rails the amp was packaged in. (Removing the knobs is optional.)
2.Unscrew the feet by pinching the rubber with your fingers and turning counter-clockwise.
3. To clear the folded casing from the PCBs, push the inner chassis from one side and lift on the opposite side. Pushing on the left side and lifting on the right works best.
4. Once the inner chassis removed, locate the gain jumpers near the vinyl and Bluetooth inputs (there are 2 jumpers, one for each side). Change the jumpers position to the inner positions labeled “+4.5dB”
6. Close back the amp and you’re done!