I have messaged the updated OP to firev1.
Here it is in all its blazing glory.
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Due to several requests that from the HF community that a Head-fier who have actually pre-ordered a unit should start a thread I have made this impressions thread.
This thread is in development.
1). OP/first page is general information and specs(In development).
2). Second post is a FAQs.
3). Third post is where you will find impressions/appreciation etc.
OS ipods
AK120
Samsung Galaxy
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Initial head-fi hifi-m8 thread
http://www.head-fi.org/t/622939/the-centrance-hifi-m8-thread
Website with general information
http://centrance.com/products/hifi-m8/
Hifi-m8 blog
http://centrance.com/products/new/blog/
*Hifi-M8 wiki
http://centrance.laurenson.com/index.php?title=Contents
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*Impedance switch is 11-2-1.
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Jude of head-fi fame video review of the Hifi-m8 and LX August 2013.
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And one of the greatest designer of DAC/Amps etc of course, jokes are often directed at the ones we admire and love.
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Let’s recap: There will be 8 versions of HiFi-M8 in total.
That’s four versions of HiFi-M8 and four versions of HiFi-M8 LX.
KEY POINT:
As a reminder, HiFi-M8 LX has S/PDIF input and USB input, while HiFi-M8 has iDevice input and USB input.
Each product will come with a choice of side panels, as follows:
– Unbalanced: 1/4″ jack, 1/8″ jack and Balanced 4-Pin XLR jack
– Unbalanced: 1/4″ jack, 1/8″ jack and Balanced 4-pin RSA jack
– 2x Neutrik Combo jacks offering balanced and unbalanced output
– 2x Neutrik Male XLR jacks offering balanced output (this is the Pro version)
The “heart” will be the same across all products, but the connectors will differ. The side panel PCBs are making the different products possible.
Support for Unbalanced OR Balanced headphones, IEMs and overhead
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| 11ohm, 2ohm, 1ohm. | | | Three levels of output impedance, for best headphone linearity
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voltage
| -2 dBV (nominal, max gain)use with less-sensitive over-the head headphones
| | | | | -10 dBV (nominal, mid gain) use for connecting to line-level consumer audio equipment
| | | | -22 dBV (nominal, min gain) use with ultra-sensitive IEM headphones
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| | | Three levels of headphone gain, for headphone sensitivity matching
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| Flat, +, ++ | | | Three levels of bass sonic shaping, for matching to various headphones
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| Flat, +, ++ | | | Three levels of treble sonic shaping, for matching to various headphones
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RE: Bass and Treble switches:
`Each gives a slight boost of about 3 dB in the ++ position. Bass accentuates the kick drum area and treble lifts the "sheen" at the top. These are not plain vanilla shelves found in consumer stereos. Both curves have complex shaping and come from years of studio recording experience. They are very subtle-sounding`- M.Goodman
Digital specs
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| Resolution
| 24-bit (Also supports 16-bit)
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| Sample Rate
| USB: 44.1 kHz, 41 kHz, 88.2 kHz, 96 kHz, 172.4 kHz, 192 kHz
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| | Interface
| USB Host and Device compatible
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| | Local clock
| 10 ppm precision, unmeasurable jitter
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| | Compatibility
| iPad, iPhone, iPod, Mac, PC
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Analog Specs
| | | | | Freq. Response
| 20 Hz...50 kHz (flat EQ circuit)
| | | S/N Ratio
| 113 dB (A-weighted)
| | | THD+N
| 0.002 % (mid gain position)
| | | Crosstalk
| -103 dB (at 1kHz)
| | | Output Impedance
| 11, 2, 1 Ohm, selectable
| | | Output Power
| 1.4 W (max), 1 W (typical)
| | | Headphones
| 16...600 Ohm
| | | Output voltage
| -2 dBV (nominal, max gain) use with less-sensitive over-the head headphones
| | | | -10 dBV (nominal, mid gain) use for connecting to line-level consumer audio equipment
| | | | -22 dBV (nominal, min gain) use with ultra-sensitive IEM headphones
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| | | +19.0dBV (600 Ohms load) (still verifying)
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* Listening to IEMs or other high sensitivity headphones at maximum level may damage your hearing.
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General Specs
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Audio Output
| XLR balanced, 1/8" combo, 1/4" unbalanced jack, model-dependent
| | | | Headphone Amp
| Direct Class-A
| | | AC Powering
| Globally compatible, 90...240V AC power supply included
| | | DC Powering
| +9...+20V DC (3A) from external adapter, car, boat, etc.
| | | Internal supplies
| Battery-isolated, filtered ±10V, super-clean analog rails
| | | Unit Dimensions:
| 127 mm (L) x 82 mm (W) x 33 mm (H)
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| | Shipping weight:
| the shipping weight is 905g (2.0lb) The unit is 331g (or almost 12 oz)
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http://www.innerfidelity.com/content/show-newport-2013-highlight-centrance-hifi-m8
Edited by ExpatinJapan - Today at 12:59 pm
-= Hifi-M8 - ipod touch 5G 64 GB/Flacplayer app -
ATH-ESW11.Ltd.Ed/DITA The Truth =-
*My opinions are those of a possibly tone deaf hobbyist.
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post #2 of 1257
5/7/13
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- ExpatinJapan
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- online
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- Location: Japan, Tokyo.
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Hifi-M8 and friends FAQ.
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*Hifi-M8 wiki
http://centrance.laurenson.com/index.php?title=Contents
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*Impedance switch is 11-2-1.
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*Line out: Set the gain at 2 and turn the volume to maximum, this is effectively the Line Out.
HiFi-M8 is designed so that you can achieve "line level" output by keeping the gain switch in the middle position and putting the volume control all the way up.
-Kenny/Kefsef10 (Centrance)
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*Galaxy S4:Samsung S4 > ibasso otg cable > Hifi M8
As expected, it only works with USB Audio Recorder Pro app. (same as my Dacport)
Thanks to Wormsdriver.
Centrance windows driver to work with a PC
http://centrance.com/downloads/ud/
HiFi-M8 supports 24-bit / 192kHz asynchronous audio under Windows. The latest driver release 7.4.5 is compatible with XP, Windows 7 and Windows 8.
No driver required to work with MACs (already built in).
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Charging.
get it yet
how I know the charge is completed?
mgoodman:
The leftmost LED that has a lightning sign above it would turn off when the unit is done charging. The three battery LEDs will be on long by then.
Charging takes a little while due to large battery, so best to leave your HiFi-M8 charging overnight. It will stop when it's done. No harm leaving it plugged in. It might top itself off every once in a while, just like a cell phone.
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Originally Posted by
JoonBug 
I've a few questions for Michael after having used my M8 for a few hours: (I've got the 4-pin XLR iDevice unit)
1. How long did you find the M8 takes to charge from a 110V outlet?
-mgoodman-- Likely as long as it takes to discharge, so consider 6 hrs as a guideline. It might go faster. We are still collecting data.
2. The 1/8" combo optical jack shines red (presumably the optical signal?) all the time (that the M8 is on). Is that normal??
-mgoodman-- Yes, normal and safe, no reason for alarm. Just don't stare at it for a long time. Don't stare at any other bright lights either
3. There seems to be a little "click" when I change the M8 to a different mode (iDevice to USB input, iDevice to power off, USB input to iDevice, etc.) Is that the sound of something frying?
-mgoodman-- We have to turn the circuit off and then back on again when we switch modes, so the unit actually turns off for a moment. That produces a click. I recommend taking the headphones off your head when switching modes.
4. My included short 30pin cable didn't seem to connect for some reason... I tried a regular stock Apple 30pin to USB cable and it connected to my old iPod touch just fine. Is the CEntrance cable particularly finnicky?
(Honestly if it turns out the cable has some kind of defect, whatever.
-mgoodman-- This is not normal. Our cable is fine. Please talk to Stacie about that.
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!!!!NOTE: it seems Centrance no longer includes the short 30pin LOD cable for idevices (June 2014).
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via ButtUglyJeff
So far, in my limited research, these are the LX compatible DAPs:
AK100 & AK120
DX100 (HDP-R10)
and in a limited fashion the IHIFI960
Android phones also have limited capabilities, depending on flavor and app used...
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*Via Buttuglyjeff
iMac - all the HiFi-M8s will work with iMacs, no drivers required, via USB. You will need to check and see if your iMac has Toslink in the headphone port like most Mac laptops do, if you want to use optical input on the LX models. But, since you can use USB, I consider it a non-issue.
iPod Classic - there isn't a 160gb
stock Classic that won't work with the M8. I'm not sure how you are shopping for your iPod, but be careful of modded iPods. Many are older models (like 5th or 5.5 gen) that had bigger hard drives added. Avoid those just because they won't work with the HiFi-M8. Now for the bad news. 24/96 support for iDevices isn't out yet. CEntrance is still promising its in the works, but not yet. More bad news. I'm quite sure iPod Classics will never be able to play more then 16/48 files without down sampling. That's is merely my opinion/assumption at this point. CEntrance has made a release yet, so we are all in the dark. I just believe that you'll need to run IOS7 to make higher sample rates possible, and Classics run their own unique firmware, not any IOS.
Nexus 5 - I'm not sure if any members confirmed success with the Nexus 5, but considering its the purest form of Android, without the phone manufacturer adding their own garbage, I would expect it would run fine through the USB A port, which is in all HiFi-M8s.
I'm just going to throw this out there. ExpactinJapan has succeeded in playing up to 24/192 with Flac Player App from 2 different IOS7 devices, a 5th gen iPod Touch, and an iPhone 4 (24/96 tested) I believe. He's using the Camera Connection Kit (CCK), into USB A, which is the same port you will use with your iMac and Nexus 5. USB A is on all models of the HiFi-M8. Depending on you library size, maybe you can go iPod Touch instead?
up to pg 21 impre/ pag
