{"product_id":"gryphon-mephisto-stereo","title":"Gryphon Mephisto Stereo","description":"\u003ch3 class=\"PDq2pG_selectionAnchorContainer\"\u003e\n\u003cstrong\u003eUnrivalled Pure Class A Authority | Available at Trimira Audio\u003c\/strong\u003e\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eGryphon Mephisto Stereo\u003c\/strong\u003e is a statement-level stereo power amplifier designed for reference systems where exceptional current delivery, wide bandwidth, and uncompromising Class A operation are priorities.\u003c\/p\u003e\n\u003cp\u003eBuilt around a \u003cstrong\u003epure Class A, dual-mono architecture\u003c\/strong\u003e, the Mephisto Stereo combines independent channel power supplies, custom Holmgren toroidal transformers, substantial energy storage, and a high-current bipolar output stage within a massive single chassis.\u003c\/p\u003e\n\u003cp\u003eWith specified output of \u003cstrong\u003e175 W per channel into 8 Ω, 350 W into 4 Ω, and 1,400 W into 1 Ω\u003c\/strong\u003e, the Mephisto Stereo is engineered to maintain authority even with demanding loudspeaker loads.\u003c\/p\u003e\n\u003cp\u003eAt \u003cstrong\u003eTrimira Audio\u003c\/strong\u003e, we recommend the Mephisto Stereo for uncompromising reference two-channel systems where maximum current capability, dynamic scale, and Class A refinement are required.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Technological Innovations\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePure Class A \u0026amp; Dual-Mono Topology\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Mephisto Stereo operates in \u003cstrong\u003ePure Class A\u003c\/strong\u003e, with independent left- and right-channel power supplies, rectification, and gain stages.\u003c\/p\u003e\n\u003cp\u003eThis true dual-mono architecture is designed to maximise channel separation and minimise interaction between the two amplifier channels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eZero Global Negative Feedback\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe amplifier uses \u003cstrong\u003ezero global negative feedback\u003c\/strong\u003e, maintaining a direct signal architecture across an exceptionally wide bandwidth.\u003c\/p\u003e\n\u003cp\u003eThe specified response extends from \u003cstrong\u003e0.3 Hz to 400 kHz (-3 dB)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e40 High-Current Bipolar Output Transistors\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA bank of \u003cstrong\u003e40 high-current bipolar output transistors\u003c\/strong\u003e provides the current capability required for difficult loudspeaker loads.\u003c\/p\u003e\n\u003cp\u003eThe output stage is designed to maintain strong control as impedance falls, with the amplifier specified to deliver substantial power into a \u003cstrong\u003e1-ohm load\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e500,000 µF Energy Storage\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Mephisto incorporates a \u003cstrong\u003e500,000 µF total capacitor reservoir\u003c\/strong\u003e, providing substantial stored energy for demanding dynamic transients.\u003c\/p\u003e\n\u003cp\u003eCombined with the amplifier's high-current power supply, this architecture is designed to maintain stable power delivery during high-output operation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Holmgren Toroidal Transformers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTwo dedicated \u003cstrong\u003eHolmgren toroidal transformers\u003c\/strong\u003e provide independent power infrastructure for the left and right channels.\u003c\/p\u003e\n\u003cp\u003eThe transformers incorporate magnetic shielding intended to reduce unwanted interaction between the mains supply and sensitive amplifier circuitry.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGreen Bias Control\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Mephisto incorporates Gryphon's \u003cstrong\u003eGreen Bias\u003c\/strong\u003e system, allowing Class A bias to be managed according to operating conditions.\u003c\/p\u003e\n\u003cp\u003eWhen linked to a compatible Gryphon preamplifier, the system can automatically adjust bias to balance Class A operation with power consumption and thermal output.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cdiv class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eGryphon Mephisto Stereo\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003ePure Class A Dual-Mono Power Amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Output\u003c\/td\u003e\n\u003ctd\u003e2 × 175 W @ 8 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Output\u003c\/td\u003e\n\u003ctd\u003e2 × 350 W @ 4 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Output\u003c\/td\u003e\n\u003ctd\u003e2 × 1400 W @ 1 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlobal Negative Feedback\u003c\/td\u003e\n\u003ctd\u003e0 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response (-3 dB)\u003c\/td\u003e\n\u003ctd\u003e0.3 Hz–400 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGain\u003c\/td\u003e\n\u003ctd\u003e+31.0 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; −83 dBV, A-weighted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD + N\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;1.0% @ 175 W \/ 8 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003e20 kΩ Balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Impedance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.025 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Devices\u003c\/td\u003e\n\u003ctd\u003e40 High-Current Bipolar Transistors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacitor Storage\u003c\/td\u003e\n\u003ctd\u003e500,000 µF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003eTrue Balanced Gold-Plated Neutrik XLR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W × H × D)\u003c\/td\u003e\n\u003ctd\u003e520 × 340 × 710 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e108.0 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cbr\u003eHigh-Current Loudspeaker Matching\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Mephisto Stereo is designed for loudspeakers that demand substantial current capability.\u003c\/p\u003e\n\u003cp\u003eIts specified output increases dramatically as impedance decreases:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e175 W @ 8 Ω\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e350 W @ 4 Ω\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1,400 W @ 1 Ω\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis makes the amplifier particularly interesting for demanding reference loudspeakers with low-impedance regions.\u003c\/p\u003e\n\u003cp\u003eSystem matching should nevertheless consider the loudspeaker's sensitivity, minimum impedance, phase angle, room size, and desired listening level.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eReference Two-Channel System Integration\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Mephisto Stereo's dual-mono architecture provides independent power delivery to each channel while retaining the convenience of a single amplifier chassis.\u003c\/p\u003e\n\u003cp\u003eA typical reference system can be configured as:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital \/ Analogue Source → Preamplifier → Mephisto Stereo → Reference Loudspeakers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBalanced XLR connectivity provides a suitable interface for high-end preamplifiers and reference system components.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eClass A Installation \u0026amp; Thermal Management\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eA 108 kg Pure Class A amplifier requires careful installation planning.\u003c\/p\u003e\n\u003cp\u003eThe Mephisto should be provided with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA robust equipment platform\u003c\/li\u003e\n\u003cli\u003eAdequate ventilation\u003c\/li\u003e\n\u003cli\u003eSufficient clearance around the chassis\u003c\/li\u003e\n\u003cli\u003eAppropriate mains power\u003c\/li\u003e\n\u003cli\u003eProper lifting and positioning procedures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTrimira Audio can assist with equipment placement, thermal management, mains requirements, and complete system integration.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eConsult with the High-End Audio Specialists at Trimira Audio\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eGryphon Mephisto Stereo\u003c\/strong\u003e combines \u003cstrong\u003ePure Class A operation, zero global negative feedback, dual-mono power architecture, 40 high-current bipolar output transistors, 500,000 µF of energy storage, and substantial 1-ohm load capability\u003c\/strong\u003e in a 108 kg reference amplifier.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTrimira Audio\u003c\/strong\u003e can assist with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReference loudspeaker matching\u003c\/li\u003e\n\u003cli\u003ePreamplifier selection\u003c\/li\u003e\n\u003cli\u003eBalanced XLR integration\u003c\/li\u003e\n\u003cli\u003eDedicated mains planning\u003c\/li\u003e\n\u003cli\u003eEquipment-rack and thermal requirements\u003c\/li\u003e\n\u003cli\u003eGreen Bias configuration\u003c\/li\u003e\n\u003cli\u003eComplete high-end two-channel system design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eContact the \u003cstrong\u003eTrimira Audio\u003c\/strong\u003e specialists in Brisbane to arrange a private Mephisto Stereo audition or discuss a complete reference amplification system.\u003c\/p\u003e","brand":"Gryphon","offers":[{"title":"Default Title","offer_id":45135039430722,"sku":null,"price":94995.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0029\/9686\/3046\/files\/MEPHISTO_AMP_NY_SQ-2.jpg?v=1788399933","url":"https:\/\/trimira.com.au\/products\/gryphon-mephisto-stereo","provider":"Trimira","version":"1.0","type":"link"}