Just in case any confusion has been introduced by talking about
"types" of dBs, there is no such thing as a "voltage dB" or a "power
dB". A dB is a dB, i.e. a specific ratio, which by definition is
measured in power, but which can also be measured in voltage (or in
current come to that) as long as the two measurements share a common
impedance.

Provided that the ratio is adjusted in line with the variable's relationship
to power. Power is related to the square of voltage, so multiplication of
ten in voltage terms is not 10dB, but 20dB.

An example in numbers with a 1 ohm resistive load:

1V rms produces 1W (call this 0dB)
10V rms produces 100W

This is a 20dB amplification, as although it gives 10x the voltage it gives
100x the power, which is expressed as 20dB.

Christian.