SM Pro Audio Tubebox: System 500 compatible preamp Module - Manual (Page 8)

SM Pro Audio Page 8 of 12 Tubebox manual
9 Let’s play
The Tube Box’s opamps are in DIP8 sockets, this simply means that users can interchange between
different types of opamps to achieve different results, and we would be happy if you report the
results to us as well. Please note that any damage caused in this process cannot be covered under
warranty.
9.1 Line Input Level
On the main board, right next to the Tube, you will find a Blue square colored trimpot. This trimpot is
for the adjustment of the input level from the 500 series connector. To make the unit as compatible
as possible we left this as a variable resistor so that users can match the level to their own system.
9.2 Tube Bypass
The Tube in the TUBE BOX can be exchanged with various compatible types. The 12AX7 tube
simply pulls out of the white socket base. On the main board near the Tube, is small selector Pad,
you can bypass the tube section entirely and use the TUBE BOX purely as an optical compressor.