Yamaha HA-L7A headphone amplifier

The Yamaha HA-L7A is a headphone amplifier that lets you immerse yourself in your favorite content, combining premium hi-fi audio technologies with the advanced sound field of AV receivers.

• Yamaha's unique floating and balanced power amplifier technology optimized for headphone listening
• ESS Technology's ES9038PRO for premium sound quality
• Very spacious sound thanks to two toroidal transformers
• SOUND FIELD mode offers a more immersive experience with all content
• Pure Direct lets you enjoy even the subtlest nuances in your music
• Stylish design and very solid construction
• Five metal feet ensure excellent stability and dampen vibrations
• High-resolution OLED display

AUTHENTIC SOUND TO REACH EVER GREATER HEIGHTS.

In an effort to deliver the ultimate in true-to-life sound for headphone listening, Yamaha has created a headphone amplifier that meets the performance demands of a true hi-fi enthusiast. Our passion for continuous creation and innovation has kept us at the forefront of audio technology for over 30 years. Our high-end HA-L7A headphone amplifier combines premium hi-fi audio technologies with the advanced soundstage of our AV receivers. Immerse yourself in the emotion and excitement of all your entertainment.

GREAT SOUND

Yamaha is involved from the moment the sound is created to the moment it reaches the human ear. It is the only brand in the world that knows the process from instrument manufacturing to professional audio equipment. The lifelike sound that strives to accurately reproduce the artist's thoughts behind the music and the expression as the composer intended, immerses you in the music and achieves a profound listening experience, as if you were in the middle of the performance.

TONAL BALANCE

We aim to completely eliminate even the tiniest noise and achieve a high rate of change, which is essential for very high-resolution music sources. We want to ensure that the amplifier can handle even the most subtle signals accurately, so that all sound elements, from instruments to vocals and dialogue, are faithfully reproduced without any unnatural changes in timbre or tone.

YAMAHA'S UNIQUE FLOATING AND BALANCED POWER AMPLIFIER TECHNOLOGY

Yamaha has optimized its patented floating and balanced power amplifier technology for this headphone amplifier. The four power amplifier circuits on the plus and minus sides of the left and right channels of the output stage are floating, which makes the output stage phase completely symmetrical. Headphones can be used without changing the amplifier configuration between balanced and unbalanced, minimizing any potential differences in sound quality due to different output connections. In addition, all circuits, including the power supply, are completely independent of ground, and the influence of even the slightest voltage fluctuations and external ground noise is completely eliminated. By maximizing these sound quality advantages, the amplifier produces natural and effortless sound, allowing you to fully relax while enjoying your entertainment for long periods of time.

HIGH-PERFORMANCE ESS 32-BIT DA CONVERTER

To achieve the premium sound quality befitting Yamaha's high-end headphone amplifier, we use ESS Technology's ES9038PRO converter, which is in a class of its own among DA converters for its superior small-signal audio reproduction. The device's master clock uses an ultra-low phase noise crystal oscillator to achieve precise DA conversion. The on-chip eight-channel DA converter performs conversion on four channels on the right and left sides. The four channels provide exceptionally high-quality audio output with a wide dynamic range and a premium signal-to-noise ratio. This allows you to enjoy a superb headphone experience where you can hear even the background sounds of a concert hall and the subtlest details of the instrument sounds.

SEPARATE STRUCTURE AND BALANCED TRANSMISSION

All main stages after the DAC are combined with a balanced circuit and a separate configuration, enabling a fully balanced transfer from the DAC output to the headphone jack. In addition, the usual single-ended (unbalanced) inputs are internally converted to balanced, so that the unique advantages of balanced transfer and amplification, such as reduced external noise and sound quality degradation, can be utilized for a wide range of input sources. When headphones that support balancing are used, the common impedance of the transfer system is eliminated, further improving the signal separation that is essential for headphone listening.

DYNAMICS

To perfectly convey the contrast between the sound's calm stillness and dramatic movement, the amplifier features two toroidal transformers and a unique, highly rigid structure. Without compromising, we have achieved excellent low-frequency response that is responsive to even the smallest sounds, luxurious volume and exceptional clarity. All types of content are accurately reproduced with dynamic and realistic sound.

LOW-FREQUENCIES REPRODUCTION AND EXCELLENT SPACIOUSNESS WITH TWO TOROID TRANSFORMERS

Separate transformers are used in the signal circuits of the pre-stage of the power supply section and in the second stage of the amplifier section. The power supply is separate, which minimizes noise caused by mutual signal interference. In addition, the use of toroidal transformers significantly reduces magnetic flux leakage. The use of a double winding also reduces voltage fluctuations, which in turn improves the stability of the power supply and produces wonderful spaciousness and strong low-frequency reproduction.

EXTREMELY RIGID STRUCTURE PREVENTS THE IMPACT OF VIBRATION ON SOUND

To prevent adverse effects on audio signals caused by external and internal vibrations, the unit features a robust construction that combines an original design concept with highly rigid parts. The L-shaped top surface is made of an 8mm thick extruded aluminum panel, and the naturally vibrating toroidal transformer is firmly attached to a 2mm thick steel plate. Strong support is provided by a thick front panel, a double rear panel, and a unique cabinet structure with a base plate at the bottom. The durable cabinet eliminates unnecessary vibration and enables powerful yet sensitive low-frequency reproduction, so you can feel the full power of the music and true realism.

STABLE METAL LEGS

The eye-catching L-shaped HA-L7A amplifier features five conical steel feet at each corner of the chassis. There are dampers between each foot and the base plate, effectively eliminating all vibrations and supporting the amplifier firmly and stably, even on a desk or tabletop. The 5.3kg chassis and all components together effectively eliminate unwanted vibrations for focused and realistic sound reproduction.

SOUND IMAGE

Yamaha's unique SOUND FIELD mode and superb sound field reproduction have only been achieved because of our unwavering commitment to the best sound reproduction. We offer a new entertainment experience never before experienced with headphone amplifiers, allowing you to be completely immersed in a realistic, natural sound field. Enjoy an immersive feeling, as if you were in the performance room with the artist.

LOW NOISE CIRCUIT STRUCTURE AND HIGH QUALITY PARTS

The HA-L7A amplifier features a low-noise design with three isolated circuit boards: a main board that handles small signals, an amplifier board and amplifier, and a system power supply board. In addition, the main board is designed to eliminate unwanted crosstalk between digital and analog signals by using a multilayer board and eliminating ground loops. The volume IC is the MUSES72323, known for its exceptionally low distortion and low-noise output. The power supply IC manufactured by Analog Devices has low output noise and high ripple suppression. The converter section is the ES9842QPRO manufactured by ESS Technology. By using only high-quality parts carefully selected through repeated listening tests, we have achieved the most natural sound field reproduction possible.

CONNECTIVITY WITHOUT COMPROMISE

With full compatibility with the widest range of music, video and entertainment sources, the HA-L7A lets you immerse yourself in your favourites with audio that brings out the full potential of all your headphones. Comprehensive connectivity and expansion flexibility further enhance and deepen your headphone experience.

THREE HEADPHONE CONNECTORS ON THE FRONT PANEL

The HA-L7A amplifier features two balanced headphone jacks on the front panel, allowing you to enjoy the precise high quality of a balanced circuit, and one unbalanced headphone jack, with gold plating to reduce contact loss. The balanced XLR headphone jacks feature renowned NEUTRIK connectors, while the 4.4mm 5-pole connectors feature Pentaconn connectors, allowing you to connect your favorite headphones and unleash their full potential.

COMPREHENSIVE INPUT AND OUTPUT CONNECTIONS FOR VERSATILE USE

The HA-L7A features a comprehensive range of input connections, including USB (Type B), coaxial and optical, allowing you to connect a wide range of devices, including high-resolution digital audio players (DAPs), computers and CD players. The amplifier also features built-in XLR and RCA pre-out/line-out outputs, so it can be used as a DA converter or pre-amplifier, offering excellent connectivity and expandability when used as an external amplifier.

QUALITY THAT EMPHASISES THE JOY OF USE AND OWNING

The pragmatic internal structure of this headphone amplifier prioritizes the highest possible sound quality, and its elegant exterior makes your listening space special. The thoughtful design and high-quality finish that you can see and feel when using the amplifier only deepen the enjoyment of listening to music on your favorite headphones.

PRECISE OLED DISPLAY

The top panel of the unit features a stunning OLED display that displays a variety of important information in a very easy-to-read format, such as the input source and its sampling frequency, the volume, and the name of the SOUND FIELD mode being used. The display automatically turns off after use to ensure that nothing causes any interference or the slightest unwanted effect on the sound.

HA-L7A Headphone Amplifier

• Frequency response (HP OUT) 4 Hz to 80 KHz, -3 dB
• Headphone Output φ6.3㎜ 1,000 mW + 1,000 mW (1 kHz, 0.01 %THD, 32 Ω)
• φ4.4㎜ 1,000 mW + 1,000 mW (1 kHz, 0.01 %THD, 32 Ω)
• XLR4 1,000 mW + 1,000 mW (1 kHz, 0.01 %THD, 32 Ω)
• Total Harmonic Distortion(THD) ≦ 0.003% (Digital IN 1 kHz, 300 mW, 32 Ω)
• Signal to Noise Ratio (SNR) > 120 dB
• Input RCA Yes
• Optical Yes (PCM: 32/44.1/48/88.2/96 kHz, 16/24 bit)
• Coaxial Yes (PCM: 32/44.1/48/88.2/96/176.4/192 kHz, 16/24 bit)
• USB Type-B Yes (PCM: 44.1/48/88.2/96/176.4/192/352.8/384 kHz, 16/24/32 bit, DSD: 2.8 MHz/5.6 MHz/11.2 MHz: ASIO Native, DoP)
• PRE/LINE Out XLR3 Yes
• RCA Yes
• Recommended Headphones impedance 32 ～ 600 Ω
• SOUND FIELD mode Yes (CINEMA/DRAMA/MUSIC VIDEO/CONCERT HALL/OUTDOOR LIVE/BGM + STRAIGHT)
• Pure Direct Yes
• Power Consumption 19 W
• Standby Power Consumption 0.2 W
• Dimensions (W x H x D) 333 x 133 x 189 mm
• Weight 5.3 kg