The BC1 Bass Compressor by Caveman Audio.

The BC1 is a Completly Analog Compressor Handbuild made in Denmark.

A Boost circuit is not common on compressor pedals, but then again, BC1 is a different beast !
As mentioned, we recommend using BC1 as a master compressor at the end of your signal chain, which might have left you with a problem.
You’d probably kick in a boost pedal for that, but since BC1 is sitting after a boost pedal, the signal coming into BC1 would be hotter, and BC1 would simply compress more.
That is why we have both LEVEL and BOOST controls. Use LEVEL to set the overall output level.
Set the BOOST control a bit higher and it will give you a level boost when you kick it in – but without changing the amount of compression !

When compressing your entire sound, you compress much less.
Therefore, you need a longer attack time than most comp pedals can provide in order to avoid killing the dynamics in your playing.
We want the compressor to help you to sit better in the mix by making the output from each string more even.
We don’t want it to kill your dynamic playing.
BC1 offers up to 25ms before the compressor kicks in, which leaves the precious transients of your tone intact. Those transients are often referred to as ‘definition’, and you don’t want to lose that !
That said, you can easily go below 25ms, and if you want to create a hard-pumping compressor effect, BC1 can take you all the way down to 0.1ms.

Selected Components And Screened Cables
• All components are carefully selected to ensure superior sonic quality
• All audio cables inside are high-quality screened cables only
• All PCB circuit boards are Gold-plated for best performance

Zinc-Plated Steel Chassis
• Protects against RFI, electric and magnetic fields
• Built like a tank to handle the most rigorous touring demands
• 10-year warranty

Specs:

• Input Impedance 5MΩ
• Output Load D.I. 2kΩ or more
• Output Load Amp Out 2kΩ or more
• Line In Impedance 15kΩ
• Dim. Metric 220 x 145 x 40/65 mm (WxDxH)
• Dim. Imperial 8.66” x 5.71″ x 1.57″/2.56″ (WxDxH)
• Weight 1.5 kg / 3 lbs. 5 oz
• Power 12VDC @ 200mA – center negative

Owner's manual

Product specs