{"product_id":"benchmark-hpa4-black","title":"Benchmark HPA4 – Black","description":"\u003cp\u003eHEADPHONE\/LINE AMPLIFIER\u003c\/p\u003e\u003cp\u003eBenchmark HPA4 – Headphone\/Line Amplifier\u003c\/p\u003e\u003cp\u003eThe HPA4 features the Benchmark-exclusive THX-888 headphone amplifier. This is Benchmark’s flagship headphone amplifier. It also marks the pinnacle of the THX headphone amplifier family. The THX-888 circuit board is manufactured by Benchmark.\u003c\/p\u003e\u003cp\u003eLike our AHB2 power amplifier, the THX-888 features the patented THX-AAA feed-forward topology. The THX-888 keeps noise and distortion below the threshold of hearing, even when driving the most difficult headphones.\u003c\/p\u003e\u003cp\u003eThe award-winning HPA4 packs power, speed, and control into a package that includes all of the functions and features of our LA4 line-level preamplifier.\u003c\/p\u003e\u003cp\u003eThe headphone and line outputs are controlled by independent 256-step relay-switched attenuators. This is, without question, the best analog volume control system available.\u003c\/p\u003e\u003cp\u003eFeed-Forward Error Correction\u003cbr\u003eMuch Faster than Feedback\u003cbr\u003eEliminates Zero-Crossing Distortion\u003cbr\u003eInherently Stable, Non-Recursive Correction\u003cbr\u003eStable into Any Phase Angle\u003cbr\u003eStable when Driving Very Low impedances\u003cbr\u003eNo Rise in THD when Driving Low Impedance Headphones\u003cbr\u003ePatented THX-AAA Technology\u003cbr\u003eFlagship THX-888 Headphone Amplifier\u003cbr\u003e30 to 40 dB reduction in THD\u003cbr\u003eKeeps THD+N Below 0 dB SPL at All Times\u003cbr\u003eNo “Electronic Fingerprints” on the Music\u003cbr\u003eAccurate Impulse Response Into all Loads\u003cbr\u003e135 dB SNR\u003cbr\u003eExtended Frequency Response\u003cbr\u003eUltra Wide 0.1 Hz to 500 kHz Response\u003cbr\u003eBass is Delivered Without a Phase Shift\u003cbr\u003eFast, Distortion-Free Transient Response\u003cbr\u003eLinear Phase Response\u003cbr\u003eAccurately Reproduces the Audio Waveshape\u003cbr\u003ePrecise Rendering of Stereo Width and Depth\u003cbr\u003eFocused 3-D Stereo Image\u003cbr\u003eUnique Features\u003cbr\u003eHigh Output Current – Drives Low Impedances with Ease\u003cbr\u003eHigh Output Voltage – Ample Headroom to Dive Inefficient Headphones\u003cbr\u003e0-Ohm Output Impedance – Maintains Tight Control of Drivers\u003cbr\u003eFault-Detection Circuit- Protected against Short Circuits and Overloads\u003cbr\u003eDual Outputs – XLR4 and 1\/4″ TRS\u003cbr\u003eIndependent Line and Headphone Balance Controls\u003cbr\u003eRelay-Controlled Volume\u003cbr\u003eHigh-Precision Low-Impedance 256-Step Attenuator\u003cbr\u003eLow-Noise 16-Step Input Gain Stage\u003cbr\u003eControl Range is +15 dB to -127.5 dB in 0.5 dB Steps\u003cbr\u003eHigh Precision Laser-Trimmed Thin-Film Resistors\u003cbr\u003e12 Relays per Output – 48 Total Including Line Outputs\u003cbr\u003ePrecision Make-Before-Break Timing – Prevents Switching Noise\u003cbr\u003eFully-Balanced LA4 Line Amplifier\u003cbr\u003eThe HPA4 Includes all LA4 Features\u003cbr\u003e2 Pairs of Balanced Line Inputs\u003cbr\u003eFully-Balanced Differential Input Amplifiers\u003cbr\u003eFully-Balanced Relay-Controlled Gain Stage\u003cbr\u003eFully-Balanced Relay-Controlled Attenuation Stage\u003cbr\u003eFully-Balanced Output Line Drivers\u003cbr\u003eLeft, Right and Mono – Balanced Line Outputs\u003c\/p\u003e\u003cp\u003eDESIGNED, ASSEMBLED, AND TESTED N THE USA\u003c\/p\u003e\u003cp\u003eThis Benchmark product was designed, assembled, and tested in the USA using USA and imported components. Most major components are made in USA.\u003c\/p\u003e","brand":"Benchmark","offers":[{"title":"Default Title","offer_id":46231827939372,"sku":"BNMK_500-17200-201","price":6839.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2970\/9956\/files\/image-0d0bdc33-e695-4861-8211-86f2d76cc6c4.webp?v=1790148212","url":"https:\/\/roycemusic.com.au\/products\/benchmark-hpa4-black","provider":"roycemusic","version":"1.0","type":"link"}