This is an excellent boost pedal, and can be somewhat tailored to taste by varying the supply voltage. I think that's key for hot bass signals, the idea is that it doesn't just sound like a blown out Neve plugin when you hit it.

Familiar story - I have been buying and trying, and it's time to let a bunch of stuff go.

Some really minor surface scratches, no original white box. This is a solid find.

I'm happy to ship to my Canadian neighbors. I have the shipping set to what I think is a safe flat rate. If it seems high or if you have any questions, please message me or send an offer with your postal code and I'll see how much better I can do than the rough estimate.

From Broughton's product page:
The Studio Boost Mini is the same Neve transistor gain stage used in the Studio One, capturing the same high fidelity tone in a smaller format. The Studio Boost Mini varies from -∞ (off) to +20 dB when using a 9V supply. Higher voltages will provide slightly higher gain and more clean headroom. 

 The input impedance is 1MΩ. 

 The pedal requires a DC power supply (not included). The DC supply should be a standard Boss style connector, center negative polarity. It can accept 9 to 24 volts. Although 9 volts is sufficient for most applications, higher voltages will provide more headroom when using the pedal with hotter signals. The current draw is approximately 10 mA.

 The Studio Boost Mini has a true bypass switch.

 Dimensions: 3.7" x 1.6"