Walrus Audio is proud to announce Mantle, a premium preamp and DI for electric bass created in close collaboration with Ian Martin Allison of Scott’s Bass Lessons. Mantle is designed to give players a powerful sonic foundation with studio grade refinement in any setting, whether performing onstage, tracking in the studio, or shaping tone at home.

Mantle features two proprietary custom wound Sapphire Transformers, developed through years of research and refinement by the Walrus engineering team. The input transformer is inspired by classic Neve approaches to deliver strong low-end and midrange presence with clean handling of large signals. The output transformer takes influence from an API 312 output stage to provide quiet, balanced output and rich harmonic character.

The interface is intentionally simple with three large rotary knobs for Bass, Gain, and Treble. Mantle offers sparkling cleans to subtle transformer saturation without unpleasant breakup, and includes an Active or Passive pad to optimize signal headroom. The EQ is flexible and musical, operating as a broad bell boost above noon and switching into high-pass or low-pass filter behavior when cutting below noon. This allows powerful control over sub-lows, mids, and top-end content while remaining intuitive for fast tone shaping.

Additional features include transformer balanced XLR and 1/4 inch outputs that can be used simultaneously. Mantle delivers strong signal integrity and reliable performance whether feeding a console, interface, or bass amp.

Ian shares, “I needed this product to exist. I’m thrilled to say that now it does, and it is absolutely killer.”

Walrus Audio is offering the Mantle Analog Bass Preamp, DI for $749.99. Pre-orders begin today with shipments beginning early Febuary. Experience the Mantle exclusively at walrusaudio.com and authorized dealers worldwide.

 Features 

• • High-impedance JFET Input Buffer for articulate, touch-sensitive response and exceptional clarity. 
  • Up to +23dB of transformer-based gain offering clean, magnetic, harmonically rich amplification with premium depth and detail. 
  • Custom-tailored Bass & Treble controls co-designed with Ian, utilizing a sophisticated blend of shelving, bandpass, and selectable LPF/HPF behaviors. 
  • Transformer-balanced XLR output ensures expansive headroom, uncompressed dynamics, and commanding low-frequency extension. 
  • High-headroom +24V internal power supply for clean dynamics and effortless low-end. 
  • Active/Passive Pad & Ground Lift switches for enhanced compatibility to allow for more headroom if needed when using an active bass. 
  • Flexible routing with 1/4″ in/out and balanced XLR direct output for modern routing needs. 

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