{"product_id":"dan-dagostino-relentless-800-z-mono-amplifier-each","title":"Dan D'Agostino Relentless 800 Z Mono Amplifier (Each)","description":"\u003cdiv class=\"field field--name-field-product-paragraph field--type-entity-reference-revisions field--label-hidden field__items\"\u003e\n\u003cdiv class=\"field__item\"\u003e\n\u003cdiv class=\"paragraph paragraph--type--product-para-image paragraph--view-mode--default\"\u003e\n\u003cdiv class=\"field field--name-field-product-para-text field--type-text-long field--label-hidden field__item\"\u003e\n\u003ch2\u003eDan D'Agostino Relentless 800 Z Mono Amplifier (Each)\u003c\/h2\u003e\n\u003cp\u003eDeveloped alongside the Momentum Z and Relentless Z reference series, the Z upgrade increases power output to an astounding 1,200 Watts into 8 Ohms while introducing an advanced Z JFET-based input stage engineered to draw significantly more current from front-end electronics.\u003c\/p\u003e\n\u003cp\u003ePower Output Boosted to 1,200W @ 8Ω: Increases absolute power delivery from 800 Watts to 1,200 Watts into 8 Ohms (scaling linearly to 2,400W into 4 Ohms and 4,800W into 2 Ohms), providing virtually limitless dynamic headroom and iron-fisted driver control.\u003c\/p\u003e\n\u003cp\u003eZ JFET-Based Input Stage: Re-architects the input circuit with an ultra-low-noise JFET topology designed to lower input impedance restrictions, allowing the amplifier to draw higher current directly from preamplifiers—most notably the Relentless Z Preamplifier.\u003c\/p\u003e\n\u003cp\u003eStrengthened Electrical Coupling: Enhances component-to-component signal transfer and impedance matching, delivering superior micro-transient speed, improved low-level resolution, and an expanded soundstage.\u003cbr\u003e\u003c\/p\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"573\" style=\"border-collapse: collapse; width: 430pt;\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"169\" style=\"mso-width-source: userset; mso-width-alt: 6001; width: 127pt;\"\u003e \u003ccol width=\"200\" style=\"mso-width-source: userset; mso-width-alt: 7111; width: 150pt;\"\u003e \u003ccol width=\"204\" style=\"mso-width-source: userset; mso-width-alt: 7253; width: 153pt;\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"23\" style=\"height: 17.4pt;\"\u003e\n\u003ctd colspan=\"3\" height=\"23\" class=\"xl67\" width=\"573\" style=\"height: 17.4pt; width: 430pt;\"\u003eTechnical Specifications \u0026amp; Upgrade Comparison\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"19\" style=\"height: 14.4pt;\"\u003e\n\u003ctd height=\"19\" class=\"xl65\" width=\"169\" style=\"height: 14.4pt; width: 127pt;\"\u003eFeature \/ Metric\u003c\/td\u003e\n\u003ctd class=\"xl65\" width=\"200\" style=\"width: 150pt;\"\u003eRelentless 800 \u003c\/td\u003e\n\u003ctd class=\"xl65\" width=\"204\" style=\"width: 153pt;\"\u003eRelentless 800 Z \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"19\" style=\"height: 14.4pt;\"\u003e\n\u003ctd height=\"19\" class=\"xl65\" width=\"169\" style=\"height: 14.4pt; width: 127pt;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003eOutput Power @ 8Ω\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"xl66\" width=\"200\" style=\"width: 150pt;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e800 W RMS\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"xl66\" width=\"204\" style=\"width: 153pt;\"\u003e1,200 W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"19\" style=\"height: 14.4pt;\"\u003e\n\u003ctd height=\"19\" class=\"xl65\" width=\"169\" style=\"height: 14.4pt; width: 127pt;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003eOutput Power @ 4Ω\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"xl66\" width=\"200\" style=\"width: 150pt;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e1,600 W RMS\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"xl66\" width=\"204\" style=\"width: 153pt;\"\u003e2,400 W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"19\" style=\"height: 14.4pt;\"\u003e\n\u003ctd height=\"19\" class=\"xl65\" width=\"169\" style=\"height: 14.4pt; width: 127pt;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003eOutput Power @ 2Ω\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"xl66\" width=\"200\" style=\"width: 150pt;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e3,200 W RMS\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"xl66\" width=\"204\" style=\"width: 153pt;\"\u003e4,800 W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"37\" style=\"height: 27.6pt;\"\u003e\n\u003ctd height=\"37\" class=\"xl65\" width=\"169\" style=\"height: 27.6pt; width: 127pt;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003eInput Topology\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"xl66\" width=\"200\" style=\"width: 150pt;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003eStandard Complementary JFET\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"xl66\" width=\"204\" style=\"width: 153pt;\"\u003eAdvanced Z JFET Input Stage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"55\" style=\"height: 41.4pt;\"\u003e\n\u003ctd height=\"55\" class=\"xl65\" width=\"169\" style=\"height: 41.4pt; width: 127pt;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003ePreamplifier Coupling\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"xl66\" width=\"200\" style=\"width: 150pt;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003eHigh-Impedance Standard\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"xl66\" width=\"204\" style=\"width: 153pt;\"\u003eEnhanced High-Current Coupling (Optimized for Relentless Z)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"19\" style=\"height: 14.4pt;\"\u003e\n\u003ctd height=\"19\" class=\"xl65\" width=\"169\" style=\"height: 14.4pt; width: 127pt;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003eSignal-to-Noise Ratio\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"xl66\" width=\"200\" style=\"width: 150pt;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e\u0026gt;113 dB (unweighted)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"xl66\" width=\"204\" style=\"width: 153pt;\"\u003e\u0026gt;120 dB (unweighted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"19\" style=\"height: 14.4pt;\"\u003e\n\u003ctd height=\"19\" class=\"xl65\" width=\"169\" style=\"height: 14.4pt; width: 127pt;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003eFrequency Response\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"xl66\" width=\"200\" style=\"width: 150pt;\"\u003e\u003cspan style=\"box-sizing: inherit;\"\u003e20 Hz – 20 kHz (±0.1 dB)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"xl66\" width=\"204\" style=\"width: 153pt;\"\u003e0.1 Hz – 250 kHz (-1 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003e\u003cspan\u003e\u003cb\u003e\u003cbr\u003eBelow information describes original Relentless 800 Mono Amplifier\u003cbr\u003e\u003cbr\u003ePerformance in a smaller package\u003c\/b\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eAfter setting the measure for amplifier excellence, the new Relentless 800 Mono Amplifier extends the Relentless sound quality to a smaller platform. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEvery major section of the Relentless circuitry - power supply, input, driver, and output stages - have all been enhanced and these all feature in the new Relentless 800.  The Relentless 800 incorporates the same circuit platform as its bigger brother with a lower power output. Mind you, the Relentless 800 is virtually unlimited when it comes to power delivery and is only outdone by the Relentless 1600 itself. Nuanced and musical at low volume levels, the Relentless 800 delivers the striking dynamic contrasts – that brings music to life.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003ePower to spare\u003c\/b\u003e\u003c\/h4\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"field__item\"\u003e\n\u003cdiv class=\"paragraph paragraph--type--product-para-image paragraph--view-mode--default\"\u003e\n\u003cdiv class=\"field field--name-field-product-para-text field--type-text-long field--label-hidden field__item\"\u003e\n\u003cp\u003e\u003cspan\u003eThe core of the Relentless Amplifiers’ power supply is a transformer that uses multiple sections running in concert, all potted and encased in a metal shield. This design reduces transformer noise to near zero and protects the audio circuitry from the transformer’s magnetic field. A special holder mechanically grounds each capacitor eliminating vibrations.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWith its nearly four-kilowatt transformer and 400,000 F capacitance power supply feeding 84 output devices, the Relentless 800 easily delivers 800 watts into 8 ohms—and when connected to a 220-volt outlet, doubles its output to 1,600 watts into 4 ohms and 3,200 watts into 2 ohms.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003eThe Design\u003c\/b\u003e\u003c\/h4\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"field__item\"\u003e\n\u003cdiv class=\"paragraph paragraph--type--product-para-image paragraph--view-mode--default\"\u003e\n\u003cdiv class=\"field field--name-field-product-para-text field--type-text-long field--label-hidden field__item\"\u003e\n\u003cp\u003e\u003cspan\u003eThe Relentless 800 employs an all-new, fully complementary design based around a precision input stage that maintains an essentially perfect balance between the positive and negative components of the signal. Any distortion artifacts that appear on one half of the signal will also appear on the other half, and thus cancel each other. Gain circuits operate in the current domain, assuring the amplifiers’ performance does not fluctuate regardless of the speaker demand. In the Relentless 800 amplifiers, new input stage devices deliver a 300% increase in current as compared to the previous devices.  These wider bandwidth, higher power components extend low and high frequency performance with reduced distortion in both frequency extremes. Global negative feedback is not employed, nor is it required as the amplifiers’ open-loop linearity eliminates the need for this performance-robbing technique.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eActivating the reimagined driver stage is a new bias stability circuit providing a nearly 50% increase in operating bias. Increasing Class A operation directly correlates to better sound quality. With this new circuit topology and the unique Copper\/Aluminum heatsinks, thermal issues are irrelevant in the Relentless 800 amplifier. The new scheme ensures bias consistency, preventing excessive temperatures even under the greatest demand.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA critical element of any amplifier output topology is the driver section. In the new Relentless 800 amplifiers, the driver transistor has been upgraded to a new device that handles 33% more power per device. Additionally, the driver transistor count has doubled thus minimizing demand on each individual device and lowering overall amplifier output impedance without resorting to global negative feedback.  Individual transistors are used for the positive and negative signal elements in an inter-digitated complementary arrangement.  This nearly doubles the current drive necessary to maximize the enhanced output stage that follows.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"field__item\"\u003e\n\u003cdiv class=\"paragraph paragraph--type--product-para-image paragraph--view-mode--default\"\u003e\n\u003cdiv class=\"field field--name-field-product-para-text field--type-text-long field--label-hidden field__item\"\u003e\n\u003ch4\u003e\u003cspan\u003e\u003cb\u003eSuper Rails\u003c\/b\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eSuper Rail employs higher voltage rails in the sections prior to the output stage, effectively “turbocharging” the amplifier and exploiting the full capability of the output voltage rails—which improves dynamics, lowers distortion, and tightens the amplifiers’ electrical grip on the speaker.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe output stage features the same new transistor as in the driver section for sonic and technical consistency. Individual complementary pairs undergo our transistor matching protocol to ensure that gain linearity is virtually identical from 50mA to 5A. Additionally, every one of the 84 output transistors used is measured and only devices that match the required performance specifications are included in the production of Relentless 800 amplifiers. The high-output transistors used in the Relentless 800 are among the fastest available. These high-powered transistors mount with two stainless steel fasteners—a rarity among flat-package transistors—for maximum thermal transfer to the copper heat sinks. A capacitor\/resistor network connected to the base of each transistor guarantees stability even at high frequencies and with low-impedance speakers. As with all D'Agostino models, the Relentless 800 amplifiers feature discrete, direct-coupled balanced circuitry - the most accurate circuit platform possible.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"field__item\"\u003e\n\u003cdiv class=\"paragraph paragraph--type--product-para-image paragraph--view-mode--default\"\u003e\n\u003cdiv class=\"field field--name-field-product-para-text field--type-text-long field--label-hidden field__item\"\u003e\n\u003ch4\u003e\u003cspan\u003e\u003cb\u003eElegantly Functional\u003c\/b\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eThe Relentless 800 Amplifier’s unique heat sink combines copper and aluminium in a thermal engine that wicks away heat from the connected devices. The elaborate elliptical design expands on the venturi heat sink first explored in the Momentum series and makes certain that the Relentless amplifiers run safely and reliably even when delivering its full rated power. Thermal, short circuit, and DC protection are included in a non-invasive but comprehensive defence against any external system faults.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe entire chassis of the Relentless 800 amplifiers are machined from solid aluminum, for superior shielding, thermal stability, and vibration damping. High-precision milling allows the entire chassis to fit together solidly with no visible fasteners.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Dan D'agostino","offers":[{"title":"Default Title","offer_id":50525203726523,"sku":null,"price":249995.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2788\/2378\/files\/1200x1200Standard_45.jpg?v=1790212619","url":"https:\/\/audioconnection.com.au\/products\/dan-dagostino-relentless-800-z-mono-amplifier-each","provider":"Audio Connection","version":"1.0","type":"link"}