Impedance matching via tuner?

[Danny Adair]

What impact does my Boss TU-2 electronic tuner have on the impedance of my signal?

I use a Realist pickup on my Spiro-strung cheap flatback German bass and I have been experimenting with routing the signal into:
1. tuner > Fishman ProEQ > AI Contra
2. ProEQ > tuner > AI Contra
3. tuner > AI Contra
4. ProEQ > AI Contra
5. AI Contra only

Thanks for your help,
Danny

[Francois Blais]

The TU-2 has a 1 Megohms input impedance, which is just fine with about every pickup.

Here's the spec sheet.