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After 3 years of research and development to achieve a whole new level of performance and sound quality, HoloAudio introduces the MAY Level 2 discrete balanced R2R DAC! Flagship of the brand, it offers a simply exceptional and uncompromising design, with the aim of providing the most faithful, musical and accurate sound reproduction possible. It is composed of two distinct blocks, the first corresponding only to the digital / analog conversion system and the second to its dedicated power supply.
The May is a dual mono DAC and therefore has a dedicated DAC module for each channel. Moreover, these are individually powered by flatwire type-O transformers, a model that surpasses all other types of transformers tested: almost zero leakage current, improved dynamics and spectacular overall performance, these are moreover handmade especially for this DAC.
HoloAudio May's next-generation linear compensation technology resolves accuracy errors caused by resistor tolerance after compensation, achieving a 0.05% variance in tolerance accuracy. The integrated proprietary anti-jitter system drastically reduces the level of jitter without increasing the background noise or negatively impacting the sound reproduction.
Based on this innovative design, the May is capable of delivering a SINAD of over 115dB and a dynamic range of over 130dB, corresponding to the highest performance that an R2R DAC can achieve today.
The May also takes advantage of the exceptional performance of PLL+FIFO technology for an ever lower jitter level. It uses a high-performance femtosecond VCXO as the PLL clock source.
On the power supply side, the two mono channels of the DAC are independently powered by their own dedicated transformer. An optimized construction allowing a better separation of the channels while limiting the interferences, in order to reveal a wide sound scene.
An architecture that also allows HoloAudio's DAC to natively support, via its USB and I2S inputs, high resolution streams up to PCM 32bit 1536kHz and DSD1024. The two XMOS XU208 USB interfaces use proprietary firmware developed to ensure very low latency and reliable data transmission. The May also features two independent I2S inputs over HDMI, each with an independent 4-channel circuit, making the clock signals less susceptible to interference and jitter than in a conventional LVDS system. Each I2S input can be configured with a different pinout for maximum compatibility.
The HoloAudio May offers several convenient configuration options. For example, a NOS mode can be activated to cancel any oversampling, with the original data going directly to the converter. This mode may allow for some distortion problems.
On the other hand, the OS mode allows oversampling of the PCM and DSD streams to reach higher frequencies, before digital/analog conversion. The OS PCM mode takes a PCM or DSD stream as input and oversamples it to PCM. The OS DSD mode will take a PCM or DSD stream and oversample it to DSD.
The May DAC features femtosecond clocks and ultra-high performance discrete voltage regulators. It features an advanced custom PLL (Phase Lock Loop) circuit designed for extremely efficient jitter cancellation. Even the highest jitter levels are almost completely suppressed. The Crystek CVHD-957 VCXO clocks in the device are responsible for recovering the digital signal and reclocking it. However, this function can be deactivated, allowing the performance of this system to be observed. A FIFO buffer allows the clock signals to be stored temporarily, making it possible to avoid using ASRC technology, which would have the effect of altering the audio data.
Important: Conținutul acestei descrieri de produs a fost tradus automat și poate conține erori atât de vocabular, cât și de sintaxă și gramatică.
Specificatii | Product type DAC R2R Inputs 1x USB-B 2x I2S via HDMI 1x Optical Toslink 1x AES/EBU 1x Coaxial (RCA) 1x Coaxial (BNC) Outputs 1x Single-ended stereo RCA 1x Balanced stereo XLR Supported sampling rates USB : PCM up to 32bit 1536kHz, Native DSD up to DSD1024, DSD DoP up to DSD512 I2S : PCM up to 32bit 1536kHz, Native DSD up to DSD1024 Optical, Coaxial, AES/EBU : PCM up to 24bit 192kHz, DSD DoP up to DSD64 THD+N 0.00017% @ PCM 48K NOS, 1K (-115dB) 0.00025% @ DSD128X, 1K (-112dB) Dynamic range 130dB @ PCM 48K NOS 115dB @ DSD128X Output voltage RCA : 2.9Vrms @ PCM 48K NOS, 1.45Vrms @ DSD128X XLR : 5.8Vrms @ PCM 48K NOS, 2.9Vrms @ DSD128X Impedance RCA : 27Ω XLR : 54Ω GENERAL Supply voltage 220-230V 50/60Hz, fuse type 2A SB 5x20mm 110-115V 50/60Hz, fuse type 4A SB 5x20mm Consumption 60W Housing material Aluminum Dimensions DAC : 430 x 300 x 55mm Power supply : 430 x 300 x 55mm Total weight 18kg Color Black Power cable & Remote control Included |
- Pentru performante optime este necesara pozitionarea boxelor la o distanta de minim 30-40cm de peretele din spate pentru boxele cu bass-reflex in spate, pentru cele cu bass-reflex in fata, recomandam pozitionarea la o distanta de 10-20cm fata de peretele din spate.
- Boxele vor ajunge sa functioneze in parametrii recomandati de producator, dupa minim 50 de ore (ideal 100 ore) de functionare la volum mediu. In aceasta perioada de timp, de “rodaj a boxelor”, sunetul va fi la inceput ceva mai artificial, bass-ul nu va fi inca controlat, inaltele rigide iar vocile usor retinute, pe masura ce boxele vor functiona, veti remarca cum bas-ul devine mai controlat, mai prezent si mai voluminos, vocile si sunetele medii devin naturale si mai echilibrate, iar inaltele devin rafinate si detaliate. Exista boxe care necesita un „rodaj” mai amplu de minim 300 de ore mai ales in cazul celor care au difuzoare de kevlar, carbon sau alte materiale de acest tip. Boxele care se „rodeaza” cel mai repede sunt cele care au difuzoare de celuloza.
- Pentru performante optime este necesar „rodarea” echipamentului, In functie de complexitatea componentelor din aparatul dumneavoastra acesta poate dura intre 30-200 ore.
- Rodajul se face la volum minim, fiind astfel suficient faptul ca acesta este alimentat corect conform manualului de utilizare la 220-230 Volti si trece semnal audio sau video dupa caz prin el.
- Echipamentul supus „rodajului” va ajunge sa functioneze in parametrii recomandati de producator, dupa perioada mai sus mentionata. In aceasta perioada de timp, de “rodaj”, sunetul va fi la inceput ceva mai artificial, bass-ul nu va fi inca controlat, inaltele rigide iar vocile usor retinute, pe masura ce echipamentul va functiona, veti remarca cum bas-ul devine mai controlat, mai prezent si mai voluminos, vocile si sunetele medii devin naturale si mai echilibrate, iar inaltele devin rafinate si detaliate.
- Pentru performante optime este necesara „rodarea” cablurilor, In functie de complexitatea conductorului folosit, cat si geometriei acestuia, „rodajul” poate dura intre 30-100 ore.
- Rodajul se face la volum minim, fiind astfel suficient faptul ca va trece semnal audio sau video dupa caz prin el.
- Cablul supus „rodajului” va ajunge sa functioneze in parametrii recomandati de producator, dupa perioada mai sus mentionata. In aceasta perioada de timp, de “rodaj”, sunetul va fi la inceput ceva mai artificial, pe masura ce cablul va functiona, veti remarca cum bas-ul devine mai controlat, mai prezent si mai voluminos, vocile si sunetele medii devin naturale si mai echilibrate, iar inaltele devin rafinate si detaliate.
Pentru detalii privind aceste aspecte de rodaj si nu numai, va rugam sa ne consultati!
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