Balanced Audio Technology VK-P10 Owner's Manual - page 8
This section describes the setting of internal configuration switches that are located inside the
VK-P10 phono preamplifier. In order to access these switches, do the following:
1. Turn the VK-P10 OFF and disconnect the power cord from the power line receptacle.
2. Remove the top cover, using the supplied Torx T-10 wrench.
Figure 1 depicts the locations of the VK-P10 internal configuration switches. These include:
1. Left and right channel cartridge loading switches S101 and S201
2. Direct/Step-Up input mode switches S102 and S202
3. Gain switch S2
The following section describes the operation of these controls.
Cartridge loading switches S101 and S201
Resistance:
The 47K load resistor is permanently connected to the cartridge input. If a different loading
value is desired, it can be obtained by switching in additional resistors, installed on the
VK-P10 PC board. This is accomplished by using the two DIP switches, S101 and S201, that
allow multiple choices for resistive and capacitive cartridge loading. Four positions are
reserved for the choice of resistance and four for capacitance. Out of each group of four, one
position is loaded with female pins and allows the user to install any desired value component
(this position is marked “USER”). Gold-plated solderable pins are supplied with the VK-P10
accessory kit, that should be attached to either resistors or capacitors supplied by the user.
This allows for easy installation and upgrade of user-supplied components.
The following resistors can be added in parallel with the 47K load:
Switch position
Resistor Value
1
100 Ohm
2
1K
3
10K
4
User-Defined
Any parallel combination of these values is also allowable.