Mic Preamp

• Circuitry features two Inward Connection’s VF600 all discrete Amp blocks
• LED VU meter that monitors the output level
• +48VDC phantom power switch
• Phase reverse switch
• -20dB pad switch
• Hi-Z low level line input 1/4" phone jack for guitars, keyboards and low level instruments
• 12-position rotary trim (5dB per step)
• 25dB to 80dB selectable range
• 70 Hz hi-pass filter
• Output level rotary control
• Balanced input and output transformers
• Fits standard 500 series slot configuration, mechanically and electrically.

Specifications:

• Input Impedance:

  • Mic Input: Transformer balanced, 200 ohm nominal input impedance source.

• Actual impedance

  • 1200 ohms broad band

Hi-Z Input: > 100K

• Output impedance: 600 ohms nominal transformer balanced output
• Frequency Response: +/- 0.5dB@20Hz to 50KHz
• Equivalent Input Noise: -129dBm
• Output Signal to Noise: -95dB
• THD + Noise: +4dBu@1KHz: .015% (20Hz t 20KHz)
• Maximum Output Level: +21dBm

https://www.treeaudio.com/tree-pre-2020