{"product_id":"walrus-audio-mantle-bass-pre-amp-di","title":"Walrus Audio Mantle Bass Pre-Amp\/DI","description":"\u003cp\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, the Mantle brings studio-grade refinement to any environment - whether you’re stepping onstage, tracking in the studio, or shaping your tone at home.\u003c\/p\u003e\n\u003cp\u003eAt the heart of the circuit are our proprietary, custom-wound Sapphire transformers, engineered to deliver the authoritative low-end and midrange push reminiscent of a classic Neve circuit, paired with an airy, articulate top end inspired by revered API preamp architecture. Together, they provide a harmonically rich canvas that elevates your playing while preserving every nuance of your instrument.\u003c\/p\u003e\n\u003cp\u003eThe Mantle empowers you to sculpt your signal with intention, offering musical gain, smartly tuned EQ, tremendous headroom, and transformer-balanced outputs. Every component and stage of the signal path is built to ensure whatever comes next - amp, interface, or mixer - receives your bass in its most confident, fully realized form.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e“I am an absolute DI fanatic, owning probably 50+ DIs and preamps. And while they’re all great in specific ways, they all either lack something critical or try to stuff in too many features, making for an underwhelming or even overwhelming user experience! This is exactly why I wanted to make Mantle. I needed this product to exist. I’m thrilled to say that now it does. And it is absolutely killer.”\u003c\/em\u003e -Ian Martin Allison\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-impedance JFET Input Buffer for articulate, touch-sensitive response and exceptional clarity.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUp to +23dB of transformer-based gain offering clean, magnetic, harmonically rich amplification with premium depth and detail.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCustom-tailored Bass \u0026amp; Treble controls co-designed with Ian, utilizing a sophisticated blend of shelving, bandpass, and selectable LPF\/HPF behaviors.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTransformer-balanced XLR output ensures expansive headroom, uncompressed dynamics, and commanding low-frequency extension.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHigh-headroom +24V internal power supply for clean dynamics and effortless low-end.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eActive\/Passive Pad \u0026amp; Ground Lift switches for enhanced compatibility to allow for more headroom if needed when using an active bass.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFlexible routing with 1\/4\" in\/out and balanced XLR direct output for modern routing needs.\u2028\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTransformers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Mantle features our proprietary custom-wound “Sapphire” transformers. With more than a year of research, listening, and refinement, the Walrus engineering team has set a new benchmark for their designs with new input and output transformers reflecting our commitment to providing creators with cutting-edge tools that inspire innovation and creativity.\u003c\/p\u003e\n\u003cp\u003eBased on Neve designs, the input transformer is capable of handling large signals without added distortion while maintaining a clean, strong, and quiet signal. High-quality core material and copper windings were used to achieve the gain needed for pristine performance across the frequency spectrum.\u003c\/p\u003e\n\u003cp\u003eThe output transformer is based on the output stage of an API 312. This serves two functions: It balances the signal quietly and effectively while also providing rich harmonic content to the amplified signal. Like the input transformer, the style of core and customized winding method result in a strong signal that can be transmitted over long cable runs without signal loss.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConnections\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1\/4\" TS Unbalanced Input (Hi-Z):\u2028Optimized for electric bass and buffered by a high-quality JFET stage to maintain impedance, detail, and instrument integrity.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e1\/4\" TS Unbalanced Output:\u2028Send your shaped signal to an amp or additional pedals.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMale XLR Balanced Output:\u2028Transformer-balanced for elevated DI tones that feel at home in high-end studio and live environments.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower:\u20289VDC, 500mA center-negative. Internally boosted to +24V for massive headroom and clean, authoritative bass response.\u2028\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePower Requirements: 9VDC, 500mA, Center-Negative, 2.1mm. Power supply not included.\u003cbr\u003eInternally boosted to +24V for higher headroom.\u003cbr\u003eThe use of an isolated power supply is recommended for powering all Walrus Audio pedals. Daisy chain power supplies are not recommended.\u003cbr\u003eInput Impedance: 1M Ω\u003cbr\u003eOutput Impedance: 150 Balanced, 150 Unbalanced\u003cbr\u003eNoise floor: Balanced -101dBV, Unbalanced -94dBV\u003cbr\u003eTHD @ 1kHz 1Vrms: 0.04%\u003cbr\u003eFrequency Response: 20Hz - 20kHz\u003cbr\u003eGain Range: -6dB → +23dB\u003cbr\u003eEQ Boost Range: 0dB → +15dB\u003cbr\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) \u003cbr\u003e\u003c\/p\u003e","brand":"Walrus Audio","offers":[{"title":"Default Title","offer_id":51923112493369,"sku":"900-1103","price":749.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2244\/3885\/files\/mantle.jpg?v=1770415172","url":"https:\/\/www.visionguitar.com\/products\/walrus-audio-mantle-bass-pre-amp-di","provider":"Vision Guitar","version":"1.0","type":"link"}