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Note: We have one new EAR HP4 Tube Headphone Amp in stock as of November 2022. EAR makes only one headphone amp model and the HP4 is one of the best in the world. These units take up to 120 days to deliver but we have this one ready to ship immediately from the USA; please call to make sure it’s still available.

Jaguar is proud to offer EAR electronics, known for crafting some of the most musical and refined tube gear available. While many high-end tube amplifier brands exist, often priced far higher than EAR, we focus on amplifiers like EAR and Lamm — products from visionary designers that stand apart as truly unique and exceptional.

The EAR HP4 Headphone Amplifier is regarded as one of the finest in its class. Using four 6SL7 valves matched to a high-quality load through precision transformers, it delivers nearly 1 watt of clean, low-distortion power into both high and low-impedance headphones. The Enhanced Triode Mode circuit, inspired by the acclaimed V20 and 859 integrated amplifiers, ensures stunning audio performance, while the input stage is transformer-coupled for the flexibility to accept both balanced and unbalanced signals from your preamplifier.

Designed for ease of use, the HP4 features an integrated volume control, allowing for direct headphone or loudspeaker listening. Input signals can be independently switched, offering versatility in your audio setup. Built for durability, EAR’s HP4 is engineered to last with an expected valve life of over 10,000 hours.

With the ability to connect up to four pairs of headphones, the HP4 offers Low/High Impedance and Balanced/Single-Ended operation options, ensuring compatibility with virtually any headphone in your collection.

EAR (Esoteric Audio Research), founded by legendary designer Tim de Paravicini, has been synonymous with high-fidelity audio since the 1970s. Renowned for his innovative designs, de Paravicini’s techniques have not only shaped EAR products, but also influenced some of the world’s most respected audio manufacturers. Many of his creations are still highly coveted by audiophiles, with their enduring appeal and unmatched performance.

Beyond consumer audio, Tim de Paravicini has made groundbreaking contributions to professional recording and mastering. His tape systems, microphones, and recording technology have been trusted by iconic artists like Pink Floyd and Lenny Kravitz, as well as prestigious labels such as Altarus and Water Lily Acoustics. Engineers like Robert Ludwig, Joe Gastwirt, and James Guthrie have relied on his designs, and The Exchange, one of the world’s top mastering facilities, uses EAR-designed equipment throughout its entire playback chain. Even Mobile Fidelity Sound Labs uses his LP cutting system and tape playback electronics.

EAR amplifiers are renowned for their ability to reproduce sound with unrivaled purity, free from the colorations and distortions that affect most amplifiers. Tim de Paravicini’s pioneering research into ultrasonic resonances and distortion has revolutionized amplifier design, allowing for a deeper understanding of how technical measurements relate to sonic quality. The result is clear: EAR amplifiers are some of the most accurate and musically engaging amplifiers ever made, providing an unmatched listening experience.

Part-Time Audiophile

https://parttimeaudiophile.com/2014/09/26/review-ear-hp4-headphone-amplifier