Yamaha HA-L7A

ELITE, ULTRA-HIGH PERFORMANCE 32-BIT D/A CONVERTER FROM ESS

Sparing no expense to realize superior sonic quality suitable for Yamaha's ideal high-end headphone amplifier, we have adopted ESS Technology's ES9038PRO converter, which is outstanding in the DAC industry for top-quality audio reproduction of minute signals. The dedicated master clock on the device utilizes a crystal oscillator with ultra-low phase noise to attain the highly precise D/A conversion, and features an eight-channel D/A converter housed inside the chip that applies four-channel conversion to the left and right sides respectively. Utilizing this four-channel bundle delivers exceptionally high-quality audio output with broad dynamic range and superior signal-to-noise ratio. This unlocks a greater sense of enjoyment in headphone listening, where you can intimately experience even background noises of the concert hall and the most minute details in the sounds of the instruments.

DISCRETE CONSTRUCTION AND BALANCED TRANSMISSION

All major stages after the DAC are unified with balanced circuitry and discrete configuration, achieving fully balanced transmission from the D/A converter output to the headphone jack. Moreover, balanced conversion is performed internally for ordinary single-ended (unbalanced) inputs, delivering the unique advantages of balanced transmission and amplification, such as minimizing external noise and sound quality deterioration, and applying them to a wide range of input sources. Additionally, when combined with headphones that support balanced drive, the common impedance of the transmission system is suppressed, further enhancing the signal separation that is crucial for quality headphone listening.

LOW-FREQUENCY REPRODUCTION AND REMARKABLE SPACIOUSNESS FROM DUAL TOROIDAL TRANSFORMERS

The power supply section employs independent transformers for the minute-signal circuitry in the front stage and the amplifier section in the second stage, and implements a separate power supply design that minimizes noise due to mutual signal interference. Moreover, usage of toroidal transformers significantly reduces magnetic flux leakage. Also, employing bifilar winding minimizes voltage variations, which in turn enhances the stability of the power supply, and achieves overwhelming spaciousness with powerful low-frequency reproduction.

HIGH RIGIDITY CONSTRUCTION - ELIMINATING SONIC IMPACTS FROM VIBRATION

In order to eliminate any detrimental impact of external and internal vibrations on the audio signals, we’ve given the unit a rugged construction that combines an original design concept with parts of high rigidity. An extruded aluminum panel of 8 mm thickness forms the L-shaped top surface, while the naturally vibrating toroidal transformer is mounted firmly onto a 2-mm-thick steel plate. Even stronger support is provided by a thick front panel, a double rear panel, and a unique housing design that features a bottom cover at the end. Through this heavy-duty housing, unnecessary vibrations are suppressed, enabling powerful yet supple low-frequency reproduction, and allowing you to completely feel the powerful energy and genuine realism contained in the music.

SOLID METAL FEET FOR STABILITY

The distinctive L-shaped HA-L7A is supported by five conical steel feet at each corner of the chassis, with dampers cushioned between each foot and the bottom panel that effectively suppress any vibration, allowing firm and stable support even on a desk or tabletop. Together with the weighty 5.3 kg body, all elements work together to effectively eliminate unwanted vibrations to achieve focused and realistic sound reproduction.

SOUND IMAGE

Yamaha's unique SOUND FIELD mode and tremendous sound field recreation could only be accomplished through our unwavering commitment to the best in sound reproduction. With a realistic, natural sound field that allows you to completely lose yourself in your listening, we deliver a new entertainment experience that had previously been unexplored with headphone amplifiers. Enjoy a truly immersive feeling - as if you were entering the very performance space of the artist.

SOUND FIELD MODE FOR UNPARALLELED IMMERSION WITH ANY CONTENT

The HA-L7A features the same Yamaha CINEMA DSP sound field creation technology that is incorporated into many of our AV receivers. The unit also utilizes the unique signal processing and multi-channel expansion technologies Yamaha has developed and cultivated over its many years of designing AV components—now brought into the headphone field. And one of the stunning results is the built-in SOUND FIELD mode. Adopting six convenient options that reproduce the optimal sound field for the entire scope of music, video, and other specific sources, it lets you enjoy all kinds of entertainment content with a full sense of realism and immersion that takes headphone listening into heretofore unexplored new worlds.