Yamaha HA-L7A Headphone Amplifier

The Yamaha HA-L7A is a headphone amplifier that allows you to 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
• Extremely spacious sound thanks to two toroidal transformers
• SOUND FIELD mode provides an even more immersive experience with all content
• Pure Direct function lets you enjoy even the most subtle nuances of music
• Stylish design and extremely robust construction
• Five metal feet ensure excellent stability and dampen vibrations
• Precise OLED display

TRUE-TO-LIFE SOUND TO REACH EVER GREATER HEIGHTS.

In its pursuit of producing the ultimate true-to-life sound world for headphone listening, Yamaha has created a headphone amplifier that meets the performance standards of a true hi-fi enthusiast. Our passion for continuous creation and innovation has kept us at the forefront of audio development for over 30 years. Our top-of-the-line HA-L7A headphone amplifier combines premium hi-fi audio technologies with the advanced sound field of our AV receivers. Immerse yourself and experience emotions and excitement perfectly in all entertainment.

SUPERB AUDIO REPRODUCTION

Yamaha is involved from the creation of sound until it reaches the human ear. It is the only brand in the world that knows the process precisely, from manufacturing musical instruments to professional audio equipment. True-to-life sound, which aims to accurately reproduce the artist's mindset behind the music and the expression as intended by the creator, will completely immerse you and provide a profound music listening experience, as if you were in the middle of a performance.

TONAL BALANCE

We strive to completely eliminate even the slightest noise and achieve a high slew rate, which is crucial for very high-resolution music sources. We want to ensure that the amplifier can handle even the most delicate signals accurately, so that all sound elements from instruments to vocals and dialogues are reproduced faithfully without unnatural changes in timbre or tonality.

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 circuit sets on the plus and minus sides of the left and right channels of the output stage are floating, allowing for a completely symmetrical push-pull operation of the output stage. Headphones can be used without changing the amplifier's configuration between balanced and unbalanced, minimizing possible sound quality differences due to different output connections. In addition, all circuits, including the power supply, are completely independent of the ground, and the effect of minor voltage fluctuations and external ground interference is completely eliminated. By maximizing these sound quality advantages, the amplifier produces a natural and unstrained sound, allowing you to relax completely with your entertainment for long periods at a time.

HIGH-PERFORMANCE ESS 32-BIT DA CONVERTER

To achieve the premium sound quality befitting Yamaha's top-of-the-line headphone amplifier, we use ESS Technology's ES9038PRO converter, which is in a league of its own among DA converters with its high-quality reproduction of small signals. The device's main clock uses a very low phase noise crystal oscillator to implement accurate DA conversion. The eight-channel DA converter in the chip 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 magnificent headphone experience where you can hear even the background sounds of a concert hall and the most subtle details of instrument sounds.

DISCRETE CONSTRUCTION AND BALANCED TRANSMISSION

All main stages after the DA converter are connected to a balanced circuit and a discrete configuration, enabling a fully balanced transmission from the DA converter's output to the headphone jack. In addition, standard single-ended (unbalanced) inputs are internally converted to balanced to leverage the unique advantages of balanced transmission and amplification, such as reducing external noise and sound quality degradation, for a wide range of input sources. When using balanced-compatible headphones, the common impedance of the transmission system is eliminated, further improving the signal separation crucial for headphone listening.

DYNAMICS

To perfectly convey the contrast between the calm silence and dramatic movement of sound, the amplifier features two toroidal transformers and a unique, highly rigid construction. Without compromise, we have achieved an excellent low-frequency response that reacts to even the smallest sounds, luxurious volume, and exceptional clarity. All content is reproduced accurately with dynamic and realistic sound.

LOW-FREQUENCY REPRODUCTION AND EXCELLENT SPATIALITY WITH TWO TOROIDAL TRANSFORMERS

Separate transformers are used for the signal circuits of the preamplifier section and the second stage of the amplifier section in the power supply. The power supply is separate, minimizing noise due to mutual signal interference. In addition, the use of toroidal transformers significantly reduces magnetic flux leakage. The use of a dual winding also reduces voltage fluctuations, which in turn improves the stability of the power supply and produces superb spatiality and powerful low-frequency reproduction.

EXTREMELY RIGID CONSTRUCTION PREVENTS VIBRATION FROM AFFECTING SOUND

To prevent harmful effects on audio signals due to external and internal vibrations, the unit features a robust construction combining an original design concept with highly rigid components. The L-shaped top panel is made of an 8 mm thick extruded aluminum panel, and the naturally vibrating toroidal transformer is firmly attached to a 2 mm thick steel plate. Strong support is provided by a thick front panel, a double back panel, and a unique chassis structure with a base plate at the bottom. The durable casing eliminates unnecessary vibrations and allows for powerful yet delicate low-frequency reproduction, so you can feel the full powerful energy and genuine realism of the music.

STABLE METAL FEET

The eye-catching L-shaped HA-L7A amplifier features five conical steel feet at each corner of the chassis. Dampers between each foot and the base plate effectively eliminate all vibrations and firmly and stably support the amplifier even on a desk or tabletop. The 5.3 kg chassis and all components together effectively eliminate unwanted vibrations to produce 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 audio reproduction. We offer a new entertainment experience, previously unprecedented with headphone amplifiers, that allows for complete immersion in a realistic, natural sound field. Enjoy the immersive feeling, as if you were with the artist in the performance space.

LOW-NOISE CIRCUIT DESIGN AND HIGH-QUALITY COMPONENTS

The HA-L7A amplifier features a low-noise design with three isolated circuit boards: the main board, which handles small signals, the amplifier board and amplifier, and the system power supply board. In addition, the main board is designed to eliminate unwanted crosstalk between digital and analog signals by using a multi-layer board and eliminating ground loops. The volume IC used 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 rejection. The converter section uses the ES9842QPRO manufactured by ESS Technology. By using only carefully selected high-quality components through repeated listening tests, we have achieved the most natural possible sound field reproduction.

CONNECTIVITY WITHOUT COMPROMISE

Because the HA-L7A is fully compatible with the widest possible range of music, video, and entertainment sources, you can immerse yourself in listening to your favorites with audio reproduction that brings out the full potential of all your headphones. Comprehensive connections and flexible expandability further enhance and deepen your headphone listening enjoyment.

THREE HEADPHONE JACKS ON THE FRONT PANEL

The HA-L7A amplifier's front panel features two balanced headphone jacks, 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, and the 4.4 mm 5-pin jacks feature Pentaconn connectors, to which you can connect your favorite headphones and unleash their full potential.

COMPREHENSIVE INPUT AND OUTPUT CONNECTIONS FOR VERSATILE USE

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

QUALITY THAT ENHANCES THE JOY OF USE AND OWNERSHIP

The pragmatic internal construction 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, which you can see and feel when using the amplifier, only deepen the enjoyment of listening to music with your favorite headphones.

PRECISE OLED DISPLAY

The unit's top panel features a magnificent OLED display that shows many important pieces of information in a very easy-to-read format, such as the input source and its sampling frequency, volume, and the name of the SOUND FIELD mode used. The display automatically turns off after use, so that nothing causes interference or even the slightest unwanted effect on the sound.

HA-L7A Headphone Amplifier

• Frequency response (HP OUT) 4 Hz - 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