• 3 setting contour switch for vintage, flat, and modern EQ settings
• Semi parametric sweepable Mids (150Hz-2.8KHz)
• Treble +/- 15db @6kHz, Bass +/- 15db @ 70Hz
• High end Burr Brown op amps provide extremely transparent yet rich and buttery sound quality
• Almost 40db of gain to drive any amp or powered cabinet
• Tuner Out with mute switch
• +/-12v power rails for optimal circuit performance
• High end transformer-less DI can be pre or post EQ
• Includes power supply
 
https://nordstrandaudio.com/products/starlifter-bass-preamp-di
 
https://www.premierguitar.com/articles/29010-rocket-surgeon-starlifter-review

https://www.youtube.com/watch?v=4cQ594sRyOE