{"product_id":"walrus-audio-mantle-bass-pre-amp-di-pedal-1","title":"Walrus Audio Mantle Bass Pre-Amp\/DI Pedal","description":"\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eDescription:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eThe Mantle is a premium preamp and DI for electric bass, created in close collaboration with Ian Martin Allison. Designed to give your instrument an impeccable sonic foundation, Mantle brings studio-grade refinement to any environment—whether you’re stepping onstage, tracking in the studio, or shaping your tone at home.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eAt the heart of the circuit are proprietary, custom-wound Sapphire transformers, engineered to deliver authoritative low end and forward midrange inspired by classic Neve designs, paired with an airy, articulate top end influenced by revered API preamp architecture. The result is a harmonically rich, confident signal that elevates your playing while preserving every nuance of your instrument.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eMantle empowers you to sculpt your sound with intention, offering musical transformer-based gain, smartly voiced EQ, massive headroom, and transformer-balanced outputs. Every stage of the signal path is meticulously designed so whatever comes next—amp, interface, or mixer—receives your bass in its most fully realized form.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\n\u003ci\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003e“I am an absolute DI fanatic, owning probably 50+ DIs and preamps. While they’re all great in specific ways, they either lack something critical or try to do too much. This is exactly why I wanted Mantle to exist. I’m thrilled to say that now it does—and it is absolutely killer.”\u003c\/span\u003e\u003c\/i\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003e\u003cbr\u003e— Ian Martin Allison\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-family: 'Helvetica Light',sans-serif;\"\u003eFeatures\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"margin-top: 0cm;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l3 level1 lfo1; tab-stops: list 36.0pt;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eHigh-Impedance JFET Input Buffer\u003cbr\u003eTouch-sensitive response with exceptional clarity and instrument integrity.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l3 level1 lfo1; tab-stops: list 36.0pt;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eTransformer-Based Gain Stage\u003cbr\u003eUp to +18 dB of clean to harmonically rich amplification, with depth and musical character.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l3 level1 lfo1; tab-stops: list 36.0pt;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eCustom Bass \u0026amp; Treble EQ\u003cbr\u003eCo-designed with Ian Martin Allison, combining shelving, bandpass, and selectable HPF\/LPF behavior.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l3 level1 lfo1; tab-stops: list 36.0pt;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eTransformer-Balanced XLR Output\u003cbr\u003eExpansive headroom, uncompressed dynamics, and commanding low-frequency extension.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l3 level1 lfo1; tab-stops: list 36.0pt;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003e+24V Internal Power Supply\u003cbr\u003eMassive headroom for clean dynamics and authoritative bass response.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l3 level1 lfo1; tab-stops: list 36.0pt;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eActive \/ Passive Pad \u0026amp; Ground Lift\u003cbr\u003eEnhanced compatibility and noise-free operation in live and studio environments.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l3 level1 lfo1; tab-stops: list 36.0pt;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eFlexible Routing\u003cbr\u003e1\/4\" input\/output plus balanced XLR for modern bass rigs and recording workflows.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eSignal Path Overview\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eInput \u003c\/span\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Arial',sans-serif; mso-ansi-language: EN-CA;\"\u003e→\u003c\/span\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003e JFET Buffer \u003c\/span\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Arial',sans-serif; mso-ansi-language: EN-CA;\"\u003e→\u003c\/span\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003e LPF\/HPF or Dry Path \u003c\/span\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Arial',sans-serif; mso-ansi-language: EN-CA;\"\u003e→\u003c\/span\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003e Input Transformer (-9 dB to +18 dB) \u003c\/span\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Arial',sans-serif; mso-ansi-language: EN-CA;\"\u003e→\u003c\/span\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003e EQ \u003c\/span\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Arial',sans-serif; mso-ansi-language: EN-CA;\"\u003e→\u003c\/span\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003e Output Transformer\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eMantle’s architecture is voiced for clarity, musical transformer coloration, and complete control over both the front end and final output of your tone.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eTransformers\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eMantle features proprietary Sapphire transformers, developed through over a year of research, listening, and refinement. These custom designs represent a new benchmark for Walrus Audio transformer performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"margin-top: 0cm;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l2 level1 lfo2; tab-stops: list 36.0pt;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eInput Transformer (Neve-Inspired)\u003cbr\u003eHandles large signals with ease, delivering a clean, strong, and quiet signal across the full frequency spectrum.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l2 level1 lfo2; tab-stops: list 36.0pt;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eOutput Transformer (API-Inspired)\u003cbr\u003eBalances the signal while adding rich harmonic content, ensuring strong transmission over long cable runs without loss.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cspan style=\"font-family: 'Helvetica Light',sans-serif;\"\u003eConnections\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"margin-top: 0cm;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo3; tab-stops: list 36.0pt;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003e1\/4\" TS Unbalanced Input (Hi-Z)\u003cbr\u003eOptimized for electric bass and buffered by a high-quality JFET stage.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo3; tab-stops: list 36.0pt;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003e1\/4\" TS Unbalanced Output\u003cbr\u003eSend your shaped signal to an amp or downstream pedals.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo3; tab-stops: list 36.0pt;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eBalanced XLR Output\u003cbr\u003eTransformer-balanced for studio- and stage-ready DI tones.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo3; tab-stops: list 36.0pt;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003ePower\u003cbr\u003e9V DC, 500 mA, center-negative. Internally boosted to +24V for massive headroom.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003eEQ Controls (Bass \u0026amp; Treble\u003c\/span\u003e)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eMantle’s EQ uses a dual-behavior design with 11-position rotary controls and a true flat response at noon.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cspan style=\"font-family: 'Helvetica Light',sans-serif;\"\u003eBoost (positions 7–11)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"margin-top: 0cm;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo4; tab-stops: list 36.0pt;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eTransitions from shelving to a broad musical bell\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo4; tab-stops: list 36.0pt;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003e+3 dB per step, up to +15 dB, without harshness or muddiness\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cspan style=\"font-family: 'Helvetica Light',sans-serif;\"\u003eCut (positions 5–1)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"margin-top: 0cm;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l4 level1 lfo5; tab-stops: list 36.0pt;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eBass: Selectable 18 dB\/oct HPF at 30, 50, 80, 100, or 120 Hz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l4 level1 lfo5; tab-stops: list 36.0pt;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eTreble: Selectable 18 dB\/oct LPF at 8, 6, 4, 2, or 1 kHz\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eGain Control\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eControls transformer-based gain from -9 dB to +18 dB, allowing everything from pristine clean headroom to magnetic harmonic saturation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eSwitches\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eActive \/ Passive Pad (-10 dB)\u003cbr\u003eIdeal for active basses and high-output instruments.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003eGround Lift\u003c\/span\u003e\u003cbr\u003eEliminates hum and ground-loop noise in complex setups.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eSpecs:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003ePower Requirements: 9VDC, 500mA, Center-Negative, 2.1mm. Power supply not included.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eInternally boosted to +24V for higher headroom.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eThe use of an isolated power supply is recommended for powering all Walrus Audio pedals. Daisy chain power supplies are not recommended.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\n\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eInput Impedance: 1M \u003c\/span\u003e\u003cspan style=\"font-family: 'Calibri',sans-serif;\"\u003eΩ\u003c\/span\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eOutput Impedance: 150 Balanced, 150 Unbalanced\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eNoise floor: Balanced -101dBV, Unbalanced -94dBV\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eTHD @ 1kHz 1Vrms: 0.04%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eFrequency Response: 20Hz - 20kHz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\n\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eGain Range: -6dB \u003c\/span\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Arial',sans-serif; mso-ansi-language: EN-CA;\"\u003e→\u003c\/span\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003e +23dB\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\n\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eEQ Boost Range: 0dB \u003c\/span\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Arial',sans-serif; mso-ansi-language: EN-CA;\"\u003e→\u003c\/span\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003e +15dB\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\n\u003cspan lang=\"EN-CA\" style=\"font-family: 'Helvetica Light',sans-serif; mso-ansi-language: EN-CA;\"\u003eExact Size of the die-cast enclosure (with knobs) is 6.09” x 4.7” x 2.28” (154.78mm x 119.35mm x 57.98mm)\u003c\/span\u003e\u003cspan lang=\"EN-CA\" style=\"font-family: 'Arial',sans-serif; mso-ansi-language: EN-CA;\"\u003e \u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Walrus Audio","offers":[{"title":"Default Title","offer_id":46813805314237,"sku":"1057634","price":1040.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0526\/4175\/9421\/files\/MANTLE_deb04204-b30a-4baa-b8e0-50181752b5d8.jpg?v=1781193517","url":"https:\/\/fr.moogaudio.com\/fr\/products\/walrus-audio-mantle-bass-pre-amp-di-pedal-1","provider":"Moog Audio","version":"1.0","type":"link"}