The “Pre Grinder” is based around the THAT 1512 preamp IC- a chip known for its ease of implementation, low power consumption, and transparent sound. Gustav from PCB Grinder’s kit is an almost-turnkey operation, incorporating all the features normally found on a preamp. The builder will need to supply the appropriate power transformer and enclosure.

Pre Grinder Features:

• 60dB of gain
• 48V phantom power
• Switchable high-pass filter (filter frequency is determined by the user)
• Uses THAT 1646 line driver IC as output stage
• Power supply PCB included, can support up to 8 channels

Price:

• €80-€492 (depending on the number of channels)
• €28 for 230V primary toroid (if in Europe)
• €18 for preamp PCB only

More Information:

• Available from the PCB Grinder store
• View the GroupDIY build/discussion thread