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post #241 of 291 Old 08-25-2014, 10:01 AM
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Originally Posted by willybk3 View Post
That did it - THANKX Dave!

Will
As long as you know that the 2.0 audio output will be lossless via SPDIF but the 5.1 audio will be lossy via SPDIF So MCH lossless DSD files converted to MCH lossless PCM in the Oppo will be output as lossy MCH on the KanexPro.

How to phase match subwoofers to the mains speakers: http://www.avsforum.com/avs-vb/showt...0#post19542630
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post #242 of 291 Old 08-25-2014, 01:02 PM
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Originally Posted by dmusoke View Post
As long as you know that the 2.0 audio output will be lossless via SPDIF but the 5.1 audio will be lossy via SPDIF So MCH lossless DSD files converted to MCH lossless PCM in the Oppo will be output as lossy MCH on the KanexPro.
Hmm, so the KP actually downconverts the audio?... because it exceeds the bandwidth of SPdif capability or what?
I never really thought about that since the HA-1 is 2-channel only, so...
whenever you are using the KP method, just be sure to play the stereo layer of your SACDs when applicable.

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post #243 of 291 Old 08-25-2014, 01:13 PM
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The KP units only has HDMI and SPDIF outputs but since the HA-1 can only accept the digital SPDIF outputs and has no HDMI input, then you are limited to the specs of the SPDIF connections, which is lossless for 2.0 up to 192kHz sampling rate and lossy for 5.1 outputs.

How to phase match subwoofers to the mains speakers: http://www.avsforum.com/avs-vb/showt...0#post19542630
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post #244 of 291 Old 08-25-2014, 01:26 PM
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^ So I wonder what happens when you try to feed the HA-1 a 5.1 audio track via SPDIF?... I haven't tried it.
Will it convert it to 2.0 downmix, or only play the L/R channels, or just have no audio at all?
I may try that sometime in the next few days and see what happens.

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post #245 of 291 Old 08-25-2014, 02:31 PM
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SPDIF accept a 5.1 track but will be lossy and not lossless/HD due to bit-rate limitations of the SPDIF interface. Lossless audio has much higher bit-rates(up to 25Mbits/s) than lossy audio(448kbits/s for DVD and 640kb/s for Bluray). You'll have to select a lossy 5.1 track if you want to pass it via SPDIF.


I connect my audio from my DVR via SPDIF to my pre-pro and HDMI for video to minimize the dreaded HDMI handshake. The audio is Dolby 5.1 encoded.

How to phase match subwoofers to the mains speakers: http://www.avsforum.com/avs-vb/showt...0#post19542630
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post #246 of 291 Old 08-25-2014, 04:17 PM
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question on headphone wire

I have the HA1 and need a long run from the unit to where I sit

is the length of wire an issue as with speaker wire?

different gauge needed for different length runs????

What you got back home, little sister, to play your fuzzy warbles on? I bet you got little save pitiful, portable picnic players. Come with uncle and hear all proper! Hear angel trumpets and devil trombones. You are invited.
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post #247 of 291 Old 08-25-2014, 05:30 PM
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The laws of electronics say No. The output of the HA-1 is a voltage output with low impedance(less than 100 ohms to ground). The input impedance to HP could be as low as 30 ohms(like the PM-1) to 600 ohms.You have a voltage divider between the headphone wire low impedance(0.1 ohms) and the actual HP impedance which is 300 to 6000 times greater. So most of the voltage(99.999%) will drop into the HP itself.


No worries...its about wire resistance R, inductance L, and capacitance C. R and L are not an issue as they are usually very low not to matter but C could be an issue as it could affect the frequency response, worst case for lousy HP cables. Make sure C is way under 100pF/ft. Typical is under 50pF/ft.
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How to phase match subwoofers to the mains speakers: http://www.avsforum.com/avs-vb/showt...0#post19542630
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post #248 of 291 Old 08-25-2014, 06:41 PM
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^ Several months ago I purchased an extension cable, with 1/4" male on one end and 1/4" female on the other, and about 25ft long,
to use with headphones when I need the distance. I think it only cost around $10. I believe the brand is "Hosa", (sold at B&H, Amazon, et al...).
Thought I would give it a shot and if it wasn't up to par, I would find a better one.
However with one end of the cable plugged into the HA-1 and the other into headphones,
I can't hear any difference from having the headphones plugged directly into the HA-1.
That is also unbalanced and I haven't attempted the same thing with a balanced XLR cable yet, but I have a feeling it'll probably have the same results.
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post #249 of 291 Old 08-28-2014, 08:26 AM
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connection question now

is this the correct wire to use to connect my Nad CD player, C542 to my HA 1?

and is this the correct usb wire to connect my lap top to the ha1?

What you got back home, little sister, to play your fuzzy warbles on? I bet you got little save pitiful, portable picnic players. Come with uncle and hear all proper! Hear angel trumpets and devil trombones. You are invited.
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post #250 of 291 Old 08-28-2014, 08:33 AM
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Quote:
Originally Posted by eljr View Post
connection question now

is this the correct wire to use to connect my Nad CD player, C542 to my HA 1?

and is this the correct usb wire to connect my lap top to the ha1?
Those wire are the correct types but there are less expensive options as well:


http://www.amazon.com/dp/B00004Z5T2/...elkin+gold+usb


http://www.bluejeanscable.com/store/audio/index.htm


- Rich
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post #251 of 291 Old 09-13-2014, 08:33 PM
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Can I connect an Oppo 103 to an Oppo HA-1 and play SACDs? Blu-ray audio? DVD-Audio? Blu-ray concert films (audio track only, obviously)?

My system? Google for: Martin Logan 420 CLX Descent Stage Summit
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post #252 of 291 Old 09-14-2014, 03:15 AM
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Originally Posted by jimshowalter View Post
Can I connect an Oppo 103 to an Oppo HA-1 and play SACDs? Blu-ray audio? DVD-Audio? Blu-ray concert films (audio track only, obviously)?
Yes, but... you will of course have to downmix any multi-channel audio to 2-channel audio,
and for high resolution audio like SACD/DVDA, and TrueHD/DTS-HD-MA, will have to be run through the analog output
of the 103 since the SPDIF (coax/optical) won't pass those high res codecs.
They can only be sent over analog or HDMI and of course the HA-1 doesn't have an HDMI input.

There is an alternative option using an audio "de-embedder", which is mentioned in previous posts of this thread.

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post #253 of 291 Old 09-14-2014, 05:01 PM
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Quote:
Originally Posted by Smarty-pants View Post
of course the HA-1 doesn't have an HDMI input.
Rats. Any reason why that's the case? It seems kind of bizarre.

The headphone section in a 105 doesn't seem to be as good as the HA-1, but I guess I'll have to settle for it.

My system? Google for: Martin Logan 420 CLX Descent Stage Summit
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post #254 of 291 Old 09-14-2014, 05:47 PM
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Originally Posted by jimshowalter View Post
Rats. Any reason why that's the case? It seems kind of bizarre.

The headphone section in a 105 doesn't seem to be as good as the HA-1, but I guess I'll have to settle for it.
With HDMI you're talking about another high end chip and board and software coding for all that goes with it.
That would significantly increase the price, so I'm sure that is why Oppo stuck with the features it does have.
Like I said you can use a de-embedder with the the player and HA-1 and is a very affordable solution at around $50.
However, the headphone amp of the 105 is no slouch. It's quite good in fact.

~Dave

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post #255 of 291 Old 09-15-2014, 02:28 AM
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Quote:
Originally Posted by jimshowalter View Post
Rats. Any reason why that's the case? It seems kind of bizarre.

The headphone section in a 105 doesn't seem to be as good as the HA-1, but I guess I'll have to settle for it.
Did you consider a small class A headphone amp without all the digital input capability? You already have a 103 and can downmix to the FR/FL RCA inputs? I use a firestone audio cute beyond with my 95 and love it. I'd like to have a HA-1, but I don't really need all the digital input capability repeated that my 95 has.

There are many great headphone amps out there that are just that, amps. If I were buying another headphone amp, I'd probably go with the Burson Audio Soloist or I'd give tubes a try and try a woo audio wa3.

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post #256 of 291 Old 09-16-2014, 07:55 AM
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Quote:
Originally Posted by eljr View Post
question on headphone wire

I have the HA1 and need a long run from the unit to where I sit

is the length of wire an issue as with speaker wire?

different gauge needed for different length runs????
In general for long runs, use the balanced cable (XLR) output. There is nothing magical or expensive about this; it is standard microphone cable. It is very good at is rejecting so-called common-mode noise (hum) that is typically picked up from nearby power cords and similar. This is why on a stage, microphone cables are run balanced. But, if you don't have any background noise issues using unbalanced (RCA), then don't worry about it.

Also, the HA-1 is designed as a balanced amplifier, so using the balanced output is recommended, not required, to avoid the balanced to single-ended conversion at the RCA output of the HA-1.

Finally, balanced has twice the voltage swing as unbalanced and so will deliver 6dB more power to your headphones. Whether this shows up as increased volume to your ears depends also on the details of the headphone design.

As stated in other replies, cable impedance (resistance) is not much of a concern with headphones, buy a decent quality cable and no worries.
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post #257 of 291 Old 09-16-2014, 01:22 PM
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Question to Smarty-Pants (Dave) - I saw that you were selling your silver HA-1. I had just purchased an HA-1 (black) PM-1 combo from Oppo last month to match my old Stax unit - two days away from 30 day return - did you not like the HA-1?

Will
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post #258 of 291 Old 09-16-2014, 01:34 PM
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Originally Posted by willybk3 View Post
Question to Smarty-Pants (Dave) - I saw that you were selling your silver HA-1. I had just purchased an HA-1 (black) PM-1 combo from Oppo last month to match my old Stax unit - two days away from 30 day return - did you not like the HA-1?

Will
I LOVE the HA-1 Will. It is an exquisite unit for everything it does.
However a financial emergency arose and I need money for personal finances right now.
I still have a BDP-105 that is almost as good as the HA-1 and that will have to get me by for a while.

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post #259 of 291 Old 09-22-2014, 11:28 AM
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It seems that Oppo 105D Universal Player has everything that HA-1 has and more -- same XLR's, a powerful headamp, ESS9018 DAC, pre-outs, etc. Yes the HA-1 has a volume knob and a cool GUI with meters. And they both cost about the same. Therefore, it seems the 105D is a better value.

Your thoughts?

Wolfy
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post #260 of 291 Old 09-22-2014, 03:28 PM
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Quote:
Originally Posted by Wolfy701 View Post
It seems that Oppo 105D Universal Player has everything that HA-1 has and more -- same XLR's, a powerful headamp, ESS9018 DAC, pre-outs, etc. Yes the HA-1 has a volume knob and a cool GUI with meters. And they both cost about the same. Therefore, it seems the 105D is a better value.

Your thoughts?
As a pre-amp and dac I would pretty much agree, but the headphone capabilities of the HA-1 is a cut above the 105D.
The HA-1 has balanced output for the headphones that sounds better than the single ended output,
as well as some other features like direct connect of portable devices (phones, iPod, ect...), high/low gain, Bluetooth...
Also, if you are using the volume control of the player, there is dynamic compression to deal with if you do not keep the volume
in the upper range. That is not an issue with the HA-1. The HA-1 also has ANALOG audio inputs where the 105D does not.
All of those things may or may not be a deal breaker for anyone, but if they are aren't, the 105D is still a great value and
of course you get a lot more features that the HA-1 doesn't have with disc playback, mass storage device playback, and surround sound.
The headphone amp in the 105D is actually really good, comparable to the single ended connection on the HA-1, but again the balanced output of the HA-1 is better.

One thing I have wondered, is if it's possible to buy or make a cable to try to use the rear balanced output of the 105/105D
to plug directly into a pair of headphones like the Oppo PM-1 or PM-2. I wonder then how it would compare to the balanced output of the HA-1.

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post #261 of 291 Old 09-22-2014, 07:23 PM
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Quote:
Originally Posted by Smarty-pants View Post
if you are using the volume control of the player, there is dynamic compression to deal with if you do not keep the volume
in the upper range.
Can you elaborate on that? I have never heard this before.

Yes the HA-1 needs Analog Input to receive an analog source such as SACD; whereas the 105 itself *is* the source and has no need for analog input.

I am going to have to put these two together and do a side-by-side comparison. To me, the headamp is the most important part. Currently I have an AKG K701 and will be upgrading to K812 soon.

Wolfy
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post #262 of 291 Old 09-22-2014, 09:29 PM
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Quote:
Originally Posted by Wolfy701 View Post
Can you elaborate on that? I have never heard this before.

Yes the HA-1 needs Analog Input to receive an analog source such as SACD; whereas the 105 itself *is* the source and has no need for analog input.

I am going to have to put these two together and do a side-by-side comparison. To me, the headamp is the most important part. Currently I have an AKG K701 and will be upgrading to K812 soon.
The volume control on the Oppo 10x players is dynamically compressed somewhat when you use the analog volume control of the players.
As long as you keep the volume above 70 or 75 then there is no issue. The difference is very subtle though.

You can use the analog input for any other devices, like a phono input too.
I have described elsewhere in this thread too, about using a de-embedder to send digital uncompressed and DSD audio to the HA-1.
That would make sure that you are taking advantage of the DAC in the HA-1.

If the headamp is the most important, then you may want to consider the HA-1 for sure.
Again the single ended output is comparable to the 105/105D, but the balanced output is better.
I guess it just depends on how critical you are, and if you think the difference is worth the trade-offs and the price paid.

If you really want the best of both worlds, then you can combine the HA-1 with a BDP-103D and zero compromises.
The cost would be more than just the HA-1 or just the 105D, but you would have all the frills and features of what Oppo has to offer
in a haeadphone amp, disc/file player, DAC, and pre-amp.

~Dave

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post #263 of 291 Old 09-23-2014, 12:01 AM
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As a pre-amp and dac I would pretty much agree, but the headphone capabilities of the HA-1 is a cut above the 105D.
....

One thing I have wondered, is if it's possible to buy or make a cable to try to use the rear balanced output of the 105/105D
to plug directly into a pair of headphones like the Oppo PM-1 or PM-2. I wonder then how it would compare to the balanced output of the HA-1.
I wonder of the XLR balanced outputs of the 105/105D can go to an external class A balanced headphone amp and thus boost the signals into the headphone be a viable alternative?

You wont get the pretty display of the HA-1, but all the features of the 105/105D can be fully utilized. Extra power provided by an external device to the headphones.

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post #264 of 291 Old 09-23-2014, 11:49 AM
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Originally Posted by steveting99 View Post
I wonder of the XLR balanced outputs of the 105/105D can go to an external class A balanced headphone amp and thus boost the signals into the headphone be a viable alternative?

You wont get the pretty display of the HA-1, but all the features of the 105/105D can be fully utilized. Extra power provided by an external device to the headphones.
Well yes that would definitely work. Some people already do exactly that with the 105/105D connected to the HA-1.
Not to mention the fact that you can connect the XLR/RCA outputs of the 105/105D directly to power amps too.
So that should also work pretty much with any headphone amp that has the proper inputs.

Sending analog output from the 105/105D means you are using the DAC in the player.
Sending digital output from the 105/105D means you are using the DAC in the receiving device.

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post #265 of 291 Old 09-23-2014, 01:46 PM
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Quote:
Originally Posted by Smarty-pants View Post
One thing I have wondered, is if it's possible to buy or make a cable to try to use the rear balanced output of the 105/105D to plug directly into a pair of headphones like the Oppo PM-1 or PM-2.
The output impedance of the XLR outs on the 105 are about 100 ohms, if that figures into your direct-connect-to-headphones equation.

I'll be back later...


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post #266 of 291 Old 09-24-2014, 01:13 AM
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The XLR inputs impedance on HA-1 are 100K...
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post #267 of 291 Old 09-24-2014, 01:33 AM
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Quote:
Originally Posted by RayDunzl View Post
The output impedance of the XLR outs on the 105 are about 100 ohms, if that figures into your direct-connect-to-headphones equation.
Thanks RayDunz for the XLR output impedance. Looking at the headphone amp with XLR inputs that have round 90k Ohms input impedance for a 900:1 damping factor. Think this is pretty good.

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Originally Posted by Coris View Post
The XLR inputs impedance on HA-1 are 100K...
Believe Ray was referring to the XLR outputs of the 105/105D and yes it would match very well with the XLR inputs of the HA-1. The damping factor increases to 1000:1, do you think it makes an audible difference?

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post #268 of 291 Old 09-24-2014, 04:03 AM
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No any difference, of course...
105/105D it fit very well on XLR out with HA-1 XLR in. And I use headphone out of HA-1 as line out/in for my amp, with exceptional/best results...
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post #269 of 291 Old 09-24-2014, 06:36 AM
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Originally Posted by Coris View Post
The XLR inputs impedance on HA-1 are 100K...
According to the HA-1 manual specification section, the XLR input impedance is 15k ohms.

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Last edited by RichB; 09-24-2014 at 09:31 AM.
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post #270 of 291 Old 09-24-2014, 08:50 AM
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Each differential input (XLR) it have a 100k resistor to GND. These inputs goes directly (AC coupled) to the differential opamps ( preamp input stage). I doubt that the impedance of the opamp chips on its inputs are around 15k... But Oppo may have right, if they wrote so in HA-1 specifications...

Last edited by Coris; 09-24-2014 at 09:03 AM.
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