HIFIMAN HM-901

[Frost'IK]

Hello Customer,

Thank you for your interest in HM-901. But I still do not know when it will be released and the selling price.
We do not have the activity of upgrading HM-801 to HM-901

[EleKCtriK]

Лед тронулся, господа присяжные заседатели!
Сегодня (24.12.12) запущена в производство первая серийная партия 901-х.
Отгрузка начнется в январе. В первую очередь отгрузят тем, кто делал предоплату еще летом, остальным потом.
На вопрос одного из не предоплативших "а получу ли я плеер к новому году?" (китайский новый год в 2013м будет 10февр), Фанг честно ответил - "не знаю, но мы будем стараться"
вот как-то так

все выше сказанное - выжимка из ветки на ержи созданной Фангом

[connect2812]

боюсь это шаг назад во всех аспектах использования музыкального плеера, даже в сравнении с hifiman 601.
жду отзывов по 901-ому.

согласен на 100%
нет, мне конечно же "ехать", а не "шашечки", но как бы это убожество не играло, при таком ценнике тем более, я лучше 601 слушать буду (далеко не эрзац красоты и эргономики, но хоть экран есть и FLAC читает). Если и менять 601, то на 901, при условии, что он все таки "удастся"

[Petru]

Извините, а у него динамик что ли будет? или это вентиляция по причине дикого тепловыделения?
900x900px-LL-24c7f473_o0570037912312537125.jpeg

[connect2812]

Извините, а у него динамик что ли будет? или это вентиляция по причине дикого тепловыделения?
Вложение 47919

конечно будет динамик! все в лучших китайских традициях, антена и 2 слота под сим-карты тоже должны присутствовать (ну по крайней мере в версии для внутреннего рынка точно))))

[Petru]

Ну просто странно выполнена вентиляция.

[Fenix140]

Ну просто странно выполнена вентиляция.

Он вообще странно скомпанован. У него сменная плата усилителя под батареей.

[VCMan]

боюсь (имхо) это шаг назад во всех аспектах использования музыкального плеера, даже в сравнении с hifiman 601.
жду отзывов по 901-ому.

В отношении звука - не бойтесь: это большой шаг вперед по сравнению даже с имеющимся у меня ХФМ 602 (очень хорошим плеером, имхо). Уши - Vsonic GR07 MkII и Heir Audio A4i (кабель TWAG2).

[Aol]

VCMan, и все же непонятно, зачем покупать плеер, который стоит дороже имеющегося топа, в лице 801, DX100, AM.
будь он полноценным плеером, но управление просто фееричное.

[dencock]

да управление вроде как и интересное на самом деле! на сайте ихнем представленно, может даже удобное! вот как будут 2 сабра в моно подключении звучать, еще и заряд больше 10 часов по заявлениям Фанга Батьковича)) может и отчасти цена оправданная будет

[Aol]

VCMan, лично я слабо верю что он может конкурировать с общепризнанным топом. что размеры, что время работы не стыкуются.
если все же я не прав, то можно пожертвовать юзабилити, в угоду компактности, пожалуй.
но все равно не вижу толковых обзоров от проверенных людей.

[Hi-Tech]

Дедушка Фэнг сказать что ему придётся поднять цену на продукт из-за обеспокоенности за низкоΩ наушники. Его думать заменить стоковую карту для более сбалансированного решения. Иначе, наша покупать дополнительные ампы. Те же грабли что и с АК100, только уже начитавшись брута от пользователей. Видать, поэтому и затянут был выход.

[H@V@N]

Ну вот, уже 1500$ стоить стал!
http://www.aliexpress.com/item/Hifim...691718381.html

[svas35!]

http://rlu.ru/fUP 6000юаней или 1000$ также осталось
http://rlu.ru/fUQ высокие лучше, разрешение выше, звук тоньше, более цифровой (если звук 801 можно охарактеризовать как аналоговый, то звук 901 как средний между аналоговым и цифровым)

[Чекист]

Ну вот, уже 1500$ стоить стал!
http://www.aliexpress.com/item/Hifim...691718381.html

Товарищи, а никто текст не переведет из описания продукта? Я смотрю там интересная (хоть и может не совсем точная) информация по схемотехнике, и по применению двух ES9018.


HiFiMAN HM-901 in the activity of the audition

HiFiMAN official said, the next generation of players is an important selling point is in the format support. HM-901 will be the perfect support including Applelossless, 16bit and 24bit of lossless compression formats. Especially in the 24bit/96KHz specification support, will achieve " perfect support ", not just to " compatible player ". That is to say, from the data read into the final DAC of this process, the player will transform it into a 16bit signal processing. If this claim could be confirmed, so this product of this characteristic will be very attractive, because now the network 24/96 format lossless audio has been more and more.

According to know the time of day sources, HM-901 extensible design would be " there was no parallel in history. ", it will have a similar to the SLR camera body + lens + other parts extended system, specifically is the host, the amp card, multiple function expansion base, can be resolved with a battery, a detachable structure.

According to the forecast, the HM-901 host price at $1000 or less, but have not yet been confirmed it with the standard amp card. Although the price is a bit expensive, but according to the official HiFiMAN says, on the generation 801 reference tone correcting device is the value of more than 2 yuan RMB British meridian CD player, and the 901 is to use the Kim Ko ( Accuphase DP-100 ) turntable, and the United States of America Recording Engineer Association recommend Pacific Pacificmicrosonic decoder, the total value of more than $30000.

HM-901 player product development situation and technical notes

HM-901 player HIFIMAN brand is the second generation player products.

This player is designed in the playback quality of high fidelity level at the same time, support for the possible multiple audio format, with more convenient selection interface, provide powerful functions, and the introduction of online music server function.

The HM-901 project has entered the final version of the prototype test phase, hardware, software, structure, industrial design four group has completed the integration.

We also need a few weeks time to concentrate on the pilot preparation and software testing work. The product of HM-901 time for the initial conference in late September, to the agents of delivery time in early October.

The overall design of HM-901

HM-901 random accessories including bare metal, charger, dispensing machine amp card and discharging plug wiring ( including lines, coaxial input and output, the coaxial input, USB line and a charging interface )

The HM-901 remains HM-801 building block design, retaining the replaceable amp card and battery design. Three dimensional size is much smaller than 801, width, length is significantly less than 801, thickness and 801 proximity.

Amp card will have a variety of options, from the most basic single end design, tens of milliwatts power output of cheap amp card to high-end positioning application of balanced line and use more expensive operational amplifier and buffer chip balance amp card, can be used as the matching device. In the use of balanced line amp cards, can be achieved by switching the switch headphone output switching 4 level balance, thus driving the 4 balance plug headphones. Balanced drive efficiency than ordinary single end amp circuit efficiency is twice as high, large output power four times. It is worth mentioning that, the amp card design in the battery. In other words, open the machine back to the battery compartment, remove the battery, no tools can replace amp card.

The battery remains the use of positive and negative 7.4 volt battery pack design, that is to say, simulation of actual line voltage up to 14.8V, and without harmful to the timbre of the switching DC-DC power chip processing. Without the use of the amp card just for the line output function or coaxial output as a function of time, using the time can be up to or more than 12 hours; in the use of ordinary life cards, using the time can be up to or more than 10 hours; in the use of the larger energy expensive matching high-grade amp cards, use time can reach or more than 8 hours.

Volume potentiometer used only in high-end HIFI amplifier can be found step potentiometer. Stepping potentiometer large volume, shape special, expensive, system integration is particularly difficult. We are in the 801 line compared with the stepping volume potentiometer and the use of ordinary potentiometer before deciding at the expense of using stepping potentiometer design. Contrast detection, regardless of is the voice of the density or sound field, use stepping potentiometer has heard of improvement.

The use of full sized SD card slot, supports the SDXC design, has been testing 128G SDXC card, use no problem.

At the bottom of the machine has a 30 pin slot, the slot is realized through the line output, digital coaxial output, digital coaxial input, USB connection and power supply charging, even through the base realizes the remote control broadcast.

The base for the selection, back connection table amp or power amplifier with RCA output block, coaxial output and input socket, USB jack, audio with replaceable power line socket, and a USB audio socket.

Notable is, line output portion, base and not base the output level is different, the base line output part adds a set of buffer, thereby increasing the output voltage.

Circuit board materials we selected the most upscale black PCB board ( ENIG, ha, in fact most of PCB plate immersion gold ). With the supplier team to update and improve, waving board called work how days gone for ever!

HM-901 mixer

As a high-end music player, we are most concerned about is the and quality is closely related to the analog circuit part. Before many netizens guess we will use the ESS ES9018 chip. Yes, in the current DAC chip industry lack of the age of heroes, in addition to 9018, we have no other choice. But we know that, this is a high index of chip, light music. In order to make good use of this chip, we in the low pass filter ( LPF ) portion of the design fee trouble. In the development process, we have experimented with five or six different LPF solutions, hope that through the improvement of part LPF design to get through this chip the eight extra meridians, let the chip music playback have feelings.

Indeed, at the time that we do, the first prototype of timbre and the old flagship HM-801, and the HM-801 reference CD player meridian 588 compared, is close to. But in contrast to the reference device, we are not satisfied with. Face value of 200000 yuan Accuphase ( voice ) DP100 turntable and Pacificmicrosonic decoder audio combination, I tell myself, must continue to search up and down and.

In the final programme, is a satisfactory scheme, we made a difficult decision: at any cost, uses two ES9018. In other words, each channel a. Either from the lower energy consumption, or from cost considerations, this is a difficult decision.

The second ES9018, the energy consumption is reduced, at least one or two hours of play time, from the cost, the machine cost and price is certainly more than HM-801. From the R & D cost, two ES9018 each channel a use mode can greatly increase the underlying software development difficulty. A friend will ask a, ESS9018 A and with two, quality difference is really big?

All the time since, quality difference have after all how old, in a large number of users to discuss, has been in a state of circulate erroneous reports.

Often users to ask questions, a product quality alent to another product into a few. This statement is wrong reference frame deletion. Elementary mathematics, in the discussion of several problem or percentage before, must define where is the reference point.

Without this reference, a few a few into comparison completely meaningless.

In accordance with the rules of mathematics, HM-901 products with a ES9018 and two ES9018, quality difference has how old this thing, we first choose a frame of reference.

Hypothetical reference is hundreds yuan entry-level player, a ES9018 prototype HM-901 and two ES9018 prototypes of the difference is not large, because both of them far beyond entry-level player products. If the light is serious have a fever equipment, such as the previously mentioned voice dial and Pacificmicrosonic decoder, then the difference is huge, there is a difference between.

In the DAC decoding chip after low-pass filtering ( LPF ), we used two OPA2107 and two OPA627 operational amplifier. The two operational amplifier is currently on the market one of the most expensive one.

We use the two operational amplifier is not because they are expensive, but because they gave us the desired sound.

It is worth mentioning that, as part of an LPF materials used to be heavier than HM-801, because HM-801 while in the low pass filter IV converting part uses the two expensive OPA627, but in order to do a good low frequency response, we pass a large number of experiments, the relatively cheap but in HM-801 line can play a good low frequency of LM833 operational amplifier used in the filtering and buffering part.

Distortion: 0.0031%

SNR: 110 dB

The degree of channel separation: greater than 90 dB

[svas35!]

КНИ: 0.0031%

соотношение сигнал/шум: 110 dB

разделение каналов: > 90 dB

это предварительные результаты тестирования линейного выхода! без реальной нагрузки. У АК100 они откровенно лучше http://rlu.ru/fCq
http://player.ru/showthread.php?t=11...=1#post1104544


---------- Добавлено в 18:32 ---------- Предыдущее сообщение было размещено в 18:28 ----------

шум хорошо отфильтрован по крайней мере

[Чекист]

КНИ: 0.0031%

соотношение сигнал/шум: 110 dB

разделение каналов: > 90 dB

это предварительные результаты тестирования линейного выхода! без реальной нагрузки. У АК100 они откровенно лучше http://rlu.ru/fCq
http://player.ru/showthread.php?t=11...=1#post1104544


---------- Добавлено в 18:32 ---------- Предыдущее сообщение было размещено в 18:28 ----------

шум хорошо отфильтрован по крайней мере

svas35!, ну делай скидку на то, что это все-таки рекламная информация в интернет-магазине. Будут точные результаты по тестированию, тогда уж и обсуждать

[wattt]

заплатил за предзаказ но китайцы сами еще не знают что где когда и как

[Frost'IK]

Dear Sir,

Thank you for the inquiry.
We do not have pre-order programme now. And the release date is still unknown.
If there is any information, we will update our website. Thanks for your interest in HiFiman product.

Best Regards,
Zhang Lu
Head-Direct Customer Service Team

[vals]

Вот что меня удивляяет:
Собрались слушаать 901 не по балансу, так вы послушайте 801 по балансу , и удивлеение я вам гарантирую.