Walrus Audio Mantle, Preamp and DI for Electric Bass, Developed in close collaboration with Ian Martin Allison for an optimal sound foundation for live, studio or home use, Specially wound Sapphire transformers, Delivers the powerful bass and low-mid sound of classic Neve preamps, Airy, articulate top end, inspired by API preamp architecture, High-impedance JFET buffer for articulate dynamics and exceptional clarity, Transformer-based amplification for up to +23 dB gain, Provides clean headroom and tape-like saturation, Customised bass and treble EQ with a sophisticated blend of shelving EQ, bandpass and various LP/HP filters, Transformer-balanced XLR output for generous headroom and uncompressed dynamics, Simultaneous use in front of an amplifier and an FOH input or recording interface, Active/passive pad reduces input sensitivity by 10dB, Ground lift switch to prevent ground loops, reduce noise and increase headroom on active basses, Controls: Bass, Gain, Treble, Bass and treble controls with 11 selectable presets each, Input: 1 x 6.3 mm jack, Outputs: 1 x 6.3 mm jack and 1x XLR male, Dimensions (W x D x H): 155 x 119 x 58 mm, Power supply: 9 V DC, 500 mA, centre negative (power supply not included), Made in USA