Activities | Music Appreciation Meeting for the Combination of Digital Age and Classic Inheritance

recording and reproduction is the foundation of sound. The storage medium of sound has been innovating and changing. Looking back at the technical history of sound recording for more than 100 years, the form has changed from phonograph to vinyl turntable, to cassette, CD and digital sound source. Analog sound sources (vinyl records) and digital sound sources are better or worse, and there is no shortage of fans.

, judging from the changes in the music industry in the United States and the United Kingdom in recent years, there are two major upward trends, which have become the mainstream digital audio source and vinyl records with a sense of physical existence-just like two sides of a coin. But whatever you choose. In fact, we are still very clear: the future... must belong to the digital sound source!

Today, we will start with Aurender, which is famous for its internationally renowned music server, and use the activity of "Music Listening and Reading" in the East Library of Shanghai Library to talk about the digital age and the inheritance of classics, talk about technology, and listen to music...

live demonstration of digital audio aurender with MC20 reference clock

has been focusing on digital turntable (music server) products since Aurender. Its excellent sound performance and extremely friendly and powerful control software have rapidly grown into world-class brand products, and have repeatedly won various world-class senior awards. Aurender launched its flagship product W20 in 2014. With the outstanding performance and impeccable craftsmanship of this model, the Aurender has further stabilized its leading position in the field of digital turntables (music servers). In order to enrich the life of different enthusiasts and enthusiasts, Aurender further expand a number of product lines, in the field of digital turntable is divided into three categories "entry-level, reference level, flagship level". There are also three categories in product form "music server, music player and content server". However, with the technical improvement of the label, new products were introduced last year-reference clock and all-in-one model.

Polish LAMPIZATOR Horizon Decoding

LampizatOr (Rambo) is one of the most powerful electronic tube audio equipment brands in the world today. Its founder, Lucas, was a real paranoid. Each unique LampizatOr product is built with passion, experience, engineering skills and a passion for sound quality.

The DAC of the future Horizon DAC is Lampizator's flagship decoder based on a new platform in 2022. Compared to industry standards, it can be 4 times more advanced and complex. Including customized transformers, customized 4-layer PCBs, 17 independent power circuits, music conversion topologies, customized mute solutions, our proprietary firmware and software, new tube solutions, new USB solutions, with optical isolation and ultra-high precision The new super clock circuit of crystal, anti-vibration CNC milling for PCB supports new tube selection, new heating scheme, new volume control with pass-through function, new glow tube display. At the same time, in terms of appearance, this product has no knobs, no LCD and OLED displays (noisy), no visible screws and bolts. Everything Horizon is new, rethought and redesigned.

Swiss darTZeelNHB-18NS and NHB-468 Front and Back Class

Swiss sound nameters have a high position in the hearts of the Chinese people. There are two main reasons: one is to appreciate their use of clock technology to create sound, and the other is the sound from this area.

darTZeel is very special. In fact, it is derived from the names of the two founders, including Swiss Hervé Derétraz and Zener Diode. In order to make the brand more prominent, Hervé Derétraz capitalized the English in the middle of the darTZeel, thus deepening people's memory of the brand. This idea also comes from the Swiss Revox brand. Revox was originally developed as an opener. Many friends will see these antiques at foreign audio exhibitions. Hervé Del Traz likes this brand very much, but it is difficult to own it when he is young because of its high price.

, according to information, Hervé Delétraz assembled radios through Philips kits when he was 10 years old. At the age of 12, he began to get access to many audio equipment he could not afford by reading audio magazines. At the age of 15, he entered the Geneva Engineering School in Switzerland to study. Since then, like many audio founders, he has liked to do DIY equipment. In the last year of the school, the laboratory professor asked him to make a class d amplifier in a very short time as his graduation work. he actually made it. this is a class d amplifier with no negative feedback, a rise time of 10nanos, and a sampling frequency of 300kHz. The results were reviewed and he received a diploma.

this, he was determined to commercialize his graduation works. However, there were no ready-made chips and ICs available on the market at that time. He could only make them by himself. If he wanted to obtain a class D amplifier with a sampling frequency as high as 1MHz, the difficulty would naturally be even higher. What's more, the Jitter problem encountered at that time also needs to be solved. After a period of gestation and bumping into a wall, he changed direction and focused on the traditional analog amplification circuit, which took him 16 years.

can see from the official website that there are really not many darTZeel products. The activity is matched with the NHB-468 of NHB-18NS front amplifier and mono rear amplifier. The NHB-468 can output 465W (peak value up to 550W) at 8Ω and 625W (peak value up to 700W) when the impedance is halved. It has become the most powerful amplifier in the darTZeel. After 9 years of design and research, it claims to cover the entire dynamic range of music, even from a few milliwatts to kilowatts, it can effortlessly show real and subtle musical performance and reproduction.

it is also worth mentioning that darTZeel design equipment still adheres to three principles: minimalist, extremely pure and extremely reliable. So there is no overall negative feedback applied in the amplification circuit, no relay, no fuse. Each channel has a finite number of transistors from input to output.

on the other hand, darTZeel will not adopt a balanced architecture like many high-end machines. Hervé Delétraz believes that this violates his "simplest" amplification circuit design principle. Balanced architectures are generally used in recording studios for long-distance signal transmission to ensure minimum interference, but in fact this is not required in fever equipment. At the same time, according to Hervé Delétraz's understanding, most of the balanced architectures in these recording equipment are not truly balanced. As a result, Hervé Delétraz focused more on these three principles and created darTZeel "toxic" and distinctive sound qualities.

UK Graham Guihan Flagship Speaker Votu Max

Graham Audio is a Hi End audio brand from the UK. The founder Paul Graham himself has more than 20 years of professional experience in recording/broadcasting engineering, live performances, etc., and he himself likes "BBC Sound" in terms of professional or personal listening. Therefore, the speaker products introduced are also reprinted classic models, such as LS3/5, LS6, LS5/9, LS5/8, etc. Each model is highly recognized by players and professional sound engineers. Even the Royal Opera House, the holy land of British classical music, uses LS5/9 as the monitor speaker in the sound control room.

the live demonstration is Graham Audio flagship speaker VOTU- MAX, VOTU, full name is Voice of The Universal, symbolizing Graham Audio's confidence in flagship products.

VOTU-MAX is divided into two boxes. The lower box is a 280-liter reflective box with a 46cm(18 inch) "octopus" unit using Volt's radial technology. This technology uses a multi-finned front chassis, which can greatly reduce power compression at high sound pressure levels. When designing a speaker with high power handling capability and extended low frequency response, the radiating area of the bass unit and reflex port is critical to provide a clean and powerful bass response, so the 46cm unit and 2 12.7cm diameter inverting holes were selected as the best solution. This, together with the bulky cabinet, provides a powerful and bass extension for the VOTO-MAX, laying a solid foundation for the VOTU-MAX.

the upper cabinet. Since the frequency region between the crossover of the subwoofer and the crossover of the 7.5cm midrange unit is a region that can generate a lot of sound energy, two 26cm units with a radial system are used to reduce power compression.

midrange dome unit is an enhanced version used in the first version of VOTU and is also a professional studio monitor unit. It has a very smooth frequency response and a modified outside fillet radius to ensure a controlled off-axis response. The driving unit spans the frequency range from 800Hz to 4kHz, the frequency division point of the 26cm unit, which is the area where most of the details of the music and vocal range are located. The 3.5cm treble unit once again adopts the factory's professional and top-level unit design, and improves the reproduction clarity and power processing.

is installed on a bass box equipped with rubber feet, which can accurately fix the box and reduce the acoustic coupling between the two boxes. The lower box has a support structure inside to ensure that any panel resonance is higher than the bass to mid-tone division point. The enclosure is manufactured using the "thin wall damping" method commonly used by Graham Audio to achieve bass rendering and exhibit the high performance of all other devices. This significantly reduces any box resonance, and the "Q value" can be minimized so as not to affect the sound quality. In the case of internal standing waves, the factory uses Rockwool to suppress these resonances, and uses many tests to test different thicknesses and different placement positions to obtain the best results. The finish of the box is also carefully selected, and the panel texture is paired between the upper and lower boxes, making the whole pair of speakers visually unified.

Shanghai Library East Hall B1