{"product_id":"dan-d-agostino-relentless-stereo-preamplifier","title":"Dan D’Agostino - Relentless - Reference Stereo Preamplifier","description":"\u003cdiv style=\"font-size:14px; font-family:Arial, Helvetica, sans-serif; color:#222; line-height:1.6;\"\u003e\n\n\u003cp\u003e\nThe Dan D’Agostino Relentless Reference Stereo Preamplifier represents the company’s ultimate expression of analog control and signal management, engineered without compromise for the world’s finest music systems. Utilizing a fully balanced discrete topology and an advanced multi-chassis architecture, the Relentless delivers extraordinary transparency, dynamic precision, and tonal realism while maintaining absolute control over the signal path.\n\u003c\/p\u003e\n\n\u003cp\u003e\nDesigned as effectively two independent dual-mono preamplifiers within a single platform, the Relentless employs physically separated audio stages with an isolated central power supply system for exceptional channel separation and ultra-low noise performance. Extensive shielding, independent analog and digital regulation stages, and precision-matched circuitry preserve signal integrity while allowing enormous voltage swing and remarkable bandwidth.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe Relentless also incorporates advanced system flexibility through dual-zone operation and an optional Digital Streaming Module supporting high-resolution playback and network streaming integration. Finished in a massive precision-machined aluminum chassis with copper detailing and a redesigned reference-grade control interface, the Relentless establishes a new benchmark in reference stereo preamplifier design.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eAvailable in Silver or Black finishes\u003c\/strong\u003e\n\u003c\/p\u003e\n\n\u003ch3 style=\"color:#f39c12; font-size:14px; margin-bottom:6px;\"\u003e\n\u003cstrong\u003eFEATURES\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cul style=\"margin-top:0;\"\u003e\n\u003cli\u003eReference fully balanced stereo preamplifier design\u003c\/li\u003e\n\u003cli\u003eTrue dual-mono analog architecture\u003c\/li\u003e\n\u003cli\u003eThree-chassis construction with dedicated central power supply\u003c\/li\u003e\n\u003cli\u003eFully discrete complementary signal topology\u003c\/li\u003e\n\u003cli\u003eIndependent analog and digital power regulation stages\u003c\/li\u003e\n\u003cli\u003eTwo-zone \/ two-source operation capability\u003c\/li\u003e\n\u003cli\u003eFive balanced XLR stereo inputs\u003c\/li\u003e\n\u003cli\u003eTwo balanced XLR stereo outputs for Zone 1\u003c\/li\u003e\n\u003cli\u003eOne balanced XLR stereo output for Zone 2\u003c\/li\u003e\n\u003cli\u003eOptional Digital Streaming Module (DSM)\u003c\/li\u003e\n\u003cli\u003ePCM playback up to 32-bit\/384kHz with DSM\u003c\/li\u003e\n\u003cli\u003eDSD256 support with DSM\u003c\/li\u003e\n\u003cli\u003eMQA decoding support with DSM\u003c\/li\u003e\n\u003cli\u003eRoon Ready capability with DSM\u003c\/li\u003e\n\u003cli\u003eEthernet and Wi-Fi network connectivity with DSM\u003c\/li\u003e\n\u003cli\u003eUSB-B, optical, and SPDIF digital inputs with DSM\u003c\/li\u003e\n\u003cli\u003ePrecision stepped volume control system\u003c\/li\u003e\n\u003cli\u003eAdvanced RF filtering and AC line conditioning circuitry\u003c\/li\u003e\n\u003cli\u003eBluetooth remote control included\u003c\/li\u003e\n\u003cli\u003eRS-232 control integration\u003c\/li\u003e\n\u003cli\u003ePrecision-machined aluminum and copper chassis construction\u003c\/li\u003e\n\u003cli\u003eHand-built in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color:#f39c12; font-size:14px; margin-bottom:6px;\"\u003e\n\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Reference Stereo Preamplifier\u003cbr\u003e\n\u003cstrong\u003eTopology:\u003c\/strong\u003e Fully Balanced Dual-Mono Discrete Design\u003cbr\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 0.1Hz – 120kHz, ±0.0dB\u003cbr\u003e\n\u003cstrong\u003eSignal-to-Noise Ratio:\u003c\/strong\u003e \u0026gt;100dB A-weighted \/ \u0026gt;105dB unweighted\u003cbr\u003e\n\u003cstrong\u003eGain:\u003c\/strong\u003e +6dB \/ +10dB selectable\u003cbr\u003e\n\u003cstrong\u003eTotal Harmonic Distortion:\u003c\/strong\u003e \u0026lt;0.006%, 20Hz – 20kHz\u003cbr\u003e\n\u003cstrong\u003eAnalog Inputs:\u003c\/strong\u003e 5 Pairs Balanced XLR Stereo\u003cbr\u003e\n\u003cstrong\u003eDigital Inputs (Optional DSM):\u003c\/strong\u003e SPDIF Coaxial, Optical, USB-B, RJ45 Ethernet, Wi-Fi\u003cbr\u003e\n\u003cstrong\u003eOutputs:\u003c\/strong\u003e 2 Pairs Balanced XLR Stereo Outputs (Zone 1), 1 Pair Balanced XLR Stereo Output (Zone 2)\u003cbr\u003e\n\u003cstrong\u003eControl:\u003c\/strong\u003e RS-232, Bluetooth Remote Control\u003cbr\u003e\n\u003cstrong\u003ePower Transformers:\u003c\/strong\u003e Dual 150VA Toroidal Transformers\u003cbr\u003e\n\u003cstrong\u003eFilter Capacitance:\u003c\/strong\u003e 26,400μF\u003cbr\u003e\n\u003cstrong\u003eDimensions (W × H × D):\u003c\/strong\u003e 17.0 × 13.75 × 17.0 in. (43.2 × 34.9 × 43.2 cm)\u003cbr\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 132 lbs (60 kg)\u003cbr\u003e\n\u003cstrong\u003eFinishes:\u003c\/strong\u003e Silver or Black\n\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Dan D'Agostino","offers":[{"title":"Silver","offer_id":51700038041888,"sku":null,"price":165000.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":51700038074656,"sku":null,"price":165000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/3728\/1568\/files\/ChatGPT_Image_May_21_2026_02_15_51_PM.png?v=1779387381","url":"https:\/\/salon1audio.com\/products\/dan-d-agostino-relentless-stereo-preamplifier","provider":"Salon 1 Audio","version":"1.0","type":"link"}