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Woo Audio Amp Owner Unite
Mar 13, 2016 at 11:21 PM Post #36,811 of 42,298
krutsch said:
 
The Oppo's internal decoder is highly regarded, so I would say 'Yes'; will probably outperform the Arcam with disc content.
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If a signal is already PCM (of any given rate) then is there any decoding performed by a DAC?
 
I've never got my head around all this.
 
DVD Audio and Blu-ray Audio is already in PCM. Only SACD is DCD.
 
Mar 13, 2016 at 11:22 PM Post #36,812 of 42,298
krutsch said:
   
Hey, those labels are pretty cool. I know I could Google, but is there a good, known source for these?
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I just used Google then dropped the logo's into a design program. The Tung-Sol logo is entirely my design.
 
Mar 13, 2016 at 11:25 PM Post #36,813 of 42,298
badas said:
 
If a signal is already PCM (of any given rate) then is there any decoding performed by a DAC?
 
I've never got my head around all this.
 
DVD Audio and Blu-ray Audio is already in PCM. Only SACD is DCD.
Click to expand...


The Oppo players use ESS Sabre DACs, internally, so they will decode MPL from DVD-Audio, DTS Master/Dolby True HD/PCM from Blu-ray and DSD from SACDs and feed PCM directly to the DACs, outputting as analog on the RCA outs (for the 103, I think you use the FL/FR for stereo out).
 
I *believe* (could be wrong) that the only the higher-end Oppo will do direct DSD-to-analog out; but still, converting to 88.2/24 and then to analog will sound fine.
 
Plug in the analog out right into your WA22 and prepare to be amazed...
 
Mar 13, 2016 at 11:26 PM Post #36,814 of 42,298
badas said:
 
I just used Google then dropped the logo's into a design program. The Tung-Sol logo is entirely my design.
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Cool. I can handle the design part, but what did you use for printable stickers? Any heat issues?
 
Mar 13, 2016 at 11:33 PM Post #36,815 of 42,298
krutsch said:
 
The Oppo players use ESS Sabre DACs, internally, so they will decode MPL from DVD-Audio, DTS Master/Dolby True HD/PCM from Blu-ray and DSD from SACDs and feed PCM directly to the DACs, outputting as analog on the RCA outs (for the 103, I think you use the FL/FR for stereo out).
 
I *believe* (could be wrong) that the only the higher-end Oppo will do direct DSD-to-analog out; but still, converting to 88.2/24 and then to analog will sound fine.
 
Plug in the analog out right into your WA22 and prepare to be amazed...
Click to expand...

 
Yip. I have it wired and setup exactly that way already. I just need to put more listening time in.
 
As I have two blu-ray players exactly the same. I have one setup to do multi-channel output for my 7.3 channel speaker system and the other as you described above for HP's. Oppo BDP-103 will decode and send as analog. I've used it before. So I guess this is the best way.
 
krutsch said:
 
Cool. I can handle the design part, but what did you use for printable stickers? Any heat issues?
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I have the advantage of running a label company.
rolleyes.gif
I can get any label printed.
No heat issues. I mainly just print of gloss paper stock. Synthetic PP (poly prop) had melting issues on metal bases. So I switched to paper.
 
Mar 14, 2016 at 12:46 PM Post #36,816 of 42,298
badas said:
 
Okay. Good to know.
 
My Oppo BDP-103D can decode all SACD, DVD Audio and Blu-ray Audio and send via RCA. Should I give that a blast?
Obviously it will be using the players DAC.
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Yes. Then you can skip your external DAC and send directly to a preamp. This is what I do with my McIntosh MVP 861 when playing SACD's.
 
Mar 15, 2016 at 7:07 PM Post #36,818 of 42,298
Quick question for all.
Has anyone used the 6BL7 in the wa22?

Though we could but got this from woo today
"Hi Joe,

I checked with Jack and he said "WA22 power supply cannot handle 6BL7's fliament current. It is too large”.

Thanks for being a Woo Audio customer!

~ Mike Liang
1-872-222-9667"
Thanks for any insight. Seem Glenn thinks it would work and I do also but.......
 
Mar 15, 2016 at 8:45 PM Post #36,819 of 42,298
Every amplifier is guaranteed to perform as designed when purchased new from us or through an authorized reseller. We back this with a 14 day full refund policy, 30 day warranty on tubes, and one year warranty on amp. We can not guarantee performance of the amp if the user use tubes purchased from a third-party or makes modifications to the amplifier. 
 
If you're experiencing an issue with our products, please email us at info@wooaudio.com or call us during business hours. We can't help you if you don't reach out.
 
872-222-9667
 
Mar 15, 2016 at 9:15 PM Post #36,821 of 42,298
Regarding noisy power tubes on the WA22, it is quite contrary to what we found. In fact, most noise issues we have encountered would come from 6SN7. Many tubes sold on eBay are not properly tested. They were mostly tested on a generic tube tester which couldn't tell if the tube is noise or not. Of course, you could find good tubes with a low price, but there is a bit of luck involved. We tested all our tubes on the actual amp so you can expect they will work well.  To add to the topic, we would use NOS as much as we could find them because those are good. However, NOS supply is dropping every day so one day they would dry up and we have to look for an alternative.
 
Mar 15, 2016 at 9:24 PM Post #36,822 of 42,298
3083joe said:
Quick question for all.
Has anyone used the 6BL7 in the wa22?

Though we could but got this from woo today
"Hi Joe,

I checked with Jack and he said "WA22 power supply cannot handle 6BL7's fliament current. It is too large”.

Thanks for being a Woo Audio customer!

~ Mike Liang
1-872-222-9667"
Thanks for any insight. Seem Glenn thinks it would work and I do also but.......
Click to expand...

The same is said about using the 6SN7 tubes in the WA6-SE but...
 
Mar 15, 2016 at 9:40 PM Post #36,823 of 42,298
wooaudio said:
  Regarding noisy power tubes on the WA22, it is quite contrary to what we found. In fact, most noise issues we have encountered would come from 6SN7. Many tubes sold on eBay are not properly tested. They were mostly tested on a generic tube tester which couldn't tell if the tube is noise or not. Of course, you could find good tubes with a low price, but there is a bit of luck involved. We tested all our tubes on the actual amp so you can expect they will work well.  To add to the topic, we would use NOS as much as we could find them because those are good. However, NOS supply is dropping every day so one day they would dry up and we have to look for an alternative.
Click to expand...


That is not my situation.
 
I transferred all my tubes to an older WA22. Dead quiet.
 
Then transferred my power tubes to a WA2. Dead quiet.
 
Put the quiet power tubes that were tested in the WA2 and older WA22 in my WA22. Really noisy. Changed to a different power tube. Dead quiet.
 
My WA22 does not like some brands of 6080 power tubes. I really liked the Mullard 6080 power tubes and purchased 5 sets from 3 different sellers. All NOS from different years. Some were better than others however all were noisy. All noisy power tubes were then tested in a WA2. All were quiet.
 
Any thoughts or comments to 274B tubes making the transformers hum in a lot of WA22's?
 
Mar 15, 2016 at 10:06 PM Post #36,825 of 42,298
wooaudio said:
  :Badas - Do you have two WA22 and one WA2 in your possession? PM, email or call in so we will get to know it. 
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I use to know someone local with an older WA22. He has moved now.
 
I tested in the WA2 from the shop where I purchased my WA22 from (computer lounge). I'm from New Zealand (long way away).
 
That is how I found out my amp is not up to scratch.
 
I lent a lot of tubes to another local WA22 owner. Including Mullards. I wonder if he used and it was quiet in his amp (new build)? He is often on the threads and might comment.
 
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