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Home News

HSE Audio Masterline 7 phono preamp

Fully balanced Class A, discrete, high voltage, dual mono phono preamplifier

Marco Lisi by Marco Lisi
July 13, 2026
in News, Uncategorized, Analog sources
Reading Time: 2 mins read
hse-audio-masterline7-phono-preamp

HSE Audio has once again set the bar high in the audio engineering realm with the launch of its latest product, the Phono Preamp Masterline 7 (ML-7). This state-of-the-art preamp is designed for audiophiles and music enthusiasts who demand nothing but the best from their audio equipment.

  • Discrete Class A gain stages
  • Solid aluminum
  • Gold-plated dials
  • Hand-selected components

Discrete Class A gain stages

The Masterline 7 is a testament to HSE’s commitment to quality and longevity. Crafted with a life expectancy of at least 30 years, the preamp utilizes only the finest handmade Swiss components, ensuring durability alongside exceptional sound quality. At the heart of the ML-7 are its 12 discrete Class A gain stages and two zero-ohm Class A ultra-low noise head-amps, designed to deliver unparalleled audio performance.

hse-audio-masterline7-phono-preamp-2

Solid aluminum

One of the standout features of the Masterline 7 is its robust construction. The preamp’s case is milled from a solid aluminum block, providing uncompromising electromagnetic compatibility (EMC) shielding. This 20mm thick housing not only protects the delicate electronics inside but also contributes to the overall aesthetic of the device, which is elegantly showcased on its antivibration support stand.

hse-audio-masterline7-phono-preamp-3

Gold-plated dials

HSE Audio has meticulously designed the ML-7 for user-friendly operation. The gold-plated dials allow for individual adjustments of the dual mono preamp for each channel, ensuring that users can fine-tune their audio experience to perfection. Each unit undergoes a rigorous two-week continuous hardening and maturing test, a process that guarantees the finest sound quality before it reaches the consumer.

Hand-selected components

Attention to detail is paramount in the Masterline 7, with all electronic components hand-selected and matched to a maximum variance of just 0.1%. HSE Audio has partnered with industry-leading manufacturers, including ELMA, Goldpoint, NKK, Panasonic, WIMA, Neutrik, and Schurter, to incorporate only the best components into their design. Furthermore, the proprietary HSE silver-teflon wiring and oversized toroidal transformer with both static and magnetic shielding enhance the audio signal integrity.

hse-audio-masterline7-phono-preamp-4

The ML-7 is engineered with an impedance selector optimized for leading pickup brands such as Benz, Lyra, XYZ, and Ortofon. Its unique and extensive gain range supports a variety of alternative pickups, accommodating even those with minimal output levels, ensuring that every listener can achieve their desired sound.

Tags: Phono preamplifier
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Marco Lisi

Marco Lisi

Publisher

Marco Lisi is the publisher of Best of High End, part of AV Concepts BV. His path into audio started early: as a teenager he was drawn into the world of free radio, presenting shows and living immersed in music every day. In his early twenties he ran his own production studio for five years, creating jingles and commercials — hands-on training in sound design, pro-audio workflows, and critical listening through studio monitors that still shapes how he evaluates gear today. He also spent years DJing in clubs before moving into publishing, first at two earlier online magazines before founding Best of High End. His hi-fi and home cinema passion was inherited from his father, an inveterate system-swapper. Marco's first setup — a confirmation gift — paired AKAI separates with entry-level Bowers & Wilkins speakers, a brand he stayed loyal to for years as his system grew from stereo into full surround and home cinema. Like many enthusiasts, he went through an extended "audiophile" phase chasing the next upgrade, before settling into a more grounded view: gear as a means to enjoy music and film, not an end in itself. Years of critical listening have given him a well-trained ear — the ability to characterize a system or pinpoint a change in the chain quickly and accurately. Just as important, his teaching background (a Belgian "regent" degree in Dutch language) gives him the tools to translate those listening impressions into clear, readable writing.

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