The ToP-ART design and the ART base guarantee excellent sound when processing and transmitting the audio signal. Transmission is simple and direct, so the possibilities of affecting noise and distortion are smaller. Yamaha's amplifier design technology called ToP-ART presents a direct symmetric I/O design (input to output), with the right and right channels organized in a straight and symmetrical arrangement to achieve the greatest purity of the signal. Furthermore, the lower chassis with an ART base (anti-resonant and resistant) and a solid central bar provide great rigidity and vibration damping support. Thanks to these innovations from Yamaha, the amplifier offers a rich sound with great musicality.

A custom-made power transformer, custom-made blocking capacitors, speaker relays with direct signal input, a single-point ground power system, extruded aluminum thermal capacitors and other items of maximum quality that easily manage any audio signal. The quality of each piece, as well as its way of interacting, determines the sound quality of any component. Yamaha employs only the highest quality items, carefully selected and tested.

Yamaha, with 125 years of history as a manufacturer of musical instruments, has also forged an excellent reputation for its high-fidelity components. The A-S501 developed taking advantage of this broad experience and high technological specialization. Based on the "natural sound" concept to reproduce all music exactly as it sounds and manufactured with exquisite care from circuit design to basic sound production, this model, despite being basic, reproduces high-quality sound with great musical richness.

The Pure Direct mode cuts the audio signal route to the maximum, ignoring the separating amplifier and the tone, loudness and balance controls to eliminate any signal degradation and thus achieving maximum sound purity.

The A-S501 has a new analog loudness control on the front panel that employs an electronic volume to offer greater sound quality, so you can freely adjust its level. Independent of volume control, it allows you to control the balance of high and low frequencies, providing the entire range of frequencies at any volume level, thus compensating for the loss of human ear perception of certain high and low frequencies at low volume levels.

The terminals plated in gold guarantee high-quality connections that avoid loss of signal. The A-S501 has speaker terminals and input terminals plated in gold.

The A-S501 is equipped for digital audio input with both optical and coaxial terminals. The optical terminal allows you to receive audio from a television and coaxial audio from a Blu-ray player. The audio continues in digital format, guaranteeing dynamic, pure and natural sound with all its entertainment sources, including sports programs such as films or concerts.

With the YBA-11, you can wirelessly transmit music to the receiver via a network from a Bluetooth mobile phone or PC. Thanks to the digital connection and the aptXR audio coding algorithm, wireless music transmission will be carried out with excellent sound quality. You can conveniently power the YBA-11 through the DC output connection located on the rear panel of the amplifier.

You can connect independent speaker systems in different rooms and switch from one to the other or use both systems at the same time. There are four terminals, so you can change speakers depending on the sound source by simply pressing a button.

A subwoofer terminal has been included with the purpose of which you can increase the bass output of your system and enjoy more powerful and quality sound.

You can connect a turntable with an MM capsule to play vinyl records. It will allow you to enjoy CDs alone, as well as analog recordings with this amplifier equipped with the most advanced digital and analog technologies.

In addition to an extraordinarily simple and exclusive design, inherited from Yamaha high-fidelity audio components, this amplifier offers a very functional button distribution. The aluminum front panel features an excellent silver-colored ribbed finish. The control buttons are manufactured with the same high quality materials as those of our high-end models.

The simple and debugged remote control design allows you to use it with just one hand. This convenient unit allows you to easily adjust the volume and order of the songs. It features a sophisticated striated finish that plays with the amplifier design. Furthermore, it allows you to control a Yamaha CD player.

The rotating selector will allow you to quickly and easily select the input source. It presents an attractive striated finish that is very pleasant to the touch and, thanks to the LEDs, clearly shows the selected source so that you can easily change the source even in the dark.

The amplifier has an energy management function that detects when the unit has not been used for a long period of time (approximately 8 hours) before it is on and automatically switches it to standby mode. Therefore, even if you forget to turn off the amplifier, power consumption will be reduced.