[Trapper32]

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I am running the LM4562 in my DAC section and am interested in the OPAXXX opamps.  Where can you buy them and which ones would you recommend.  It looks like 2 are listed above.
 
Thanks,
 
Scott

Digikey sells a lot of the  opamps available...  here's their listing for the opa2107 http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=296-19953-5-ND
 

 

[Trapper32]

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I found the LM4562 grating  and while  the LT1364 is not too bad in the DAC , the OPA2107 in both the amp and DAC would give you alot more bass.  It definitely tames the treble and gives much help in the bass region.  

Exactly how much bass is "alot more bass."? Also, what is the difference between Through Hole and Surface Mount? Thanks

I think the opa2107 will give you the most bass available in an opamp swap.  If the bass isn't enough after that then I think you should follow ninjikiran's advice and get different headphones.  The opamps are the 8dip configuration...just lift up and replace...make sure they go back in the same orientation that they came out...you can put them in backwards and that results in no sound at best and blown components at worst.

 

[tangelo]

So I would need to buy two OPA2107, one for the DAC opamp and one for the headphone opamp? Just wanted to be sure, cause they seem kinda pricey. And also, that either Surface Mount of Through Hole doesn't really matter (so the cheaper one)? Thanks.

 

[ninjikiran]

More like... blown components   Putting in opamps backwards should usually be a death sentence.
 
Now I don't know if its a death sentence for the DAC or just the opamp, haven't actually researched that nor do I try to make such a mistake.

 

[Greg121986]

I just bought a Maverick D1 used on Ebay for $215 shipped. I am a really upset that I paid so much for it, considering a new one would go for only $20 more. I sniped the auction at $200 thinking it would never go for that price. It had one bid for $125 up until the very last minute. I guess it is kind of my fault for setting such a high snipe price, but I did not think it would reach that point.
 
This is my first attempt at hi-fi audio and it's my first purchase. Is it a good one? I'm wondering if my $215 would have been better spent somewhere else. I think I might pair it with some AKG 701 or 702s.

 

[attenuated 3db]

Out of curiosity, I just looked at the bidding history of that auction to see what happened.  The bidding did jump from $158 to $200 rather suddenly.  Well, don't feel too bad.  Ryan of Maverick Audio has incredible customer service, and will probably treat you like the original owner in terms of support; other Head-Fi-ers who were not the original owners of their Maverick products tell how he shipped them replacement parts, no questions asked.  And you did get a unit with a GE 5670W tube, which would have cost $219 new, plus $15 DHL international shipping.
 
I answered another question you had about the Maverick A1 and loudspeakers in another, new thread you started.  What headphones do you have now or are you planning to get?  I am enjoying my Maverick D1-A1 combination immensely with my new Sennheiser 650s, and all of this stuff just arrived in the last nine days.   Shades of time-dilation.  Hard to believe I clicked "yes" on that many PayPal buttons in so short a time and signed to take delivery of so many wonderful little packages.

 

[uelover]

aww i am selling my D1 with all the upgraded parts! should have bought from me! hahah.
 
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I just bought a Maverick D1 used on Ebay for $215 shipped. I am a really upset that I paid so much for it, considering a new one would go for only $20 more. I sniped the auction at $200 thinking it would never go for that price. It had one bid for $125 up until the very last minute. I guess it is kind of my fault for setting such a high snipe price, but I did not think it would reach that point.
 
This is my first attempt at hi-fi audio and it's my first purchase. Is it a good one? I'm wondering if my $215 would have been better spent somewhere else. I think I might pair it with some AKG 701 or 702s.

 

[Trapper32]

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So I would need to buy two OPA2107, one for the DAC opamp and one for the headphone opamp? Just wanted to be sure, cause they seem kinda pricey. And also, that either Surface Mount of Through Hole doesn't really matter (so the cheaper one)? Thanks.

Yes, two but you don't want the thru hole or surface mount..u need the 8dip ones.

 

[Greg121986]

Last I checked my previous post about the A1 with speakers was kind of dead. I will check it again. For headphones, I would like to get some AKG 701 or 702s. Between my two roommates we have some Grado GS1000i, AKG 702, and Sennheiser HD650s. I will try all of them on my amp. I have also tried Beyerdynamics DT 880 Premium and Pro which I really liked after they were well broken in. I have tried some well broken in AKG 701s as well and I have to say those have been my favorite. I might get those or 702s depending on what price I can find.
 
Because I am weary to spend so much money right now I was also considering Grado SR80i, but I am not sure if I would be happy with them. I like their price, but I really did not like the Grado GS1000i not even considering their $1000 price tag. I much prefer the AKG.
 
The bidding of the Ebay auction was really strange. I used Gixen to snipe the auction. It was my first time sniping, I have never actually used that tactic before. I set my price initially to $185 for the auction on Gixen but later changed it to $200 thinking an extra $15 wouldn't make a difference. I really thought it would go for much less than that.
 
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Out of curiosity, I just looked at the bidding history of that auction to see what happened.  The bidding did jump from $158 to $200 rather suddenly.  Well, don't feel too bad.  Ryan of Maverick Audio has incredible customer service, and will probably treat you like the original owner in terms of support; other Head-Fi-ers who were not the original owners of their Maverick products tell how he shipped them replacement parts, no questions asked.  And you did get a unit with a GE 5670W tube, which would have cost $219 new, plus $15 DHL international shipping.
 
I answered another question you had about the Maverick A1 and loudspeakers in another, new thread you started.  What headphones do you have now or are you planning to get?  I am enjoying my Maverick D1-A1 combination immensely with my new Sennheiser 650s, and all of this stuff just arrived in the last nine days.   Shades of time-dilation.  Hard to believe I clicked "yes" on that many PayPal buttons in so short a time and signed to take delivery of so many wonderful little packages.

 

[ninjikiran]

I see it all the time on ebay and it annoys me to no end.  People buying items for like $10 off retail price, kind of like some strange bidding addiction.

 

[Dynobot]

Live and Learn
 
If you didn't learn anything you will repeat the coarse, so let the value of your lesson sink in....
 
 
Quote:

I just bought a Maverick D1 used on Ebay for $215 shipped. I am a really upset that I paid so much for it, considering a new one would go for only $20 more. I sniped the auction at $200 thinking it would never go for that price. It had one bid for $125 up until the very last minute. I guess it is kind of my fault for setting such a high snipe price, but I did not think it would reach that point.
 
This is my first attempt at hi-fi audio and it's my first purchase. Is it a good one? I'm wondering if my $215 would have been better spent somewhere else. I think I might pair it with some AKG 701 or 702s.

 

[tangelo]

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So I would need to buy two OPA2107, one for the DAC opamp and one for the headphone opamp? Just wanted to be sure, cause they seem kinda pricey. And also, that either Surface Mount of Through Hole doesn't really matter (so the cheaper one)? Thanks.

Yes, two but you don't want the thru hole or surface mount..u need the 8dip ones.

Wait, so wait you're telling me is that this won't fit?
 
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=296-19953-5-ND
 

 

[ninjikiran]

Looks like a dual model based on description, appears to be Dip8.  Besides any offsets I don't see any reason for it not to work.
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So I would need to buy two OPA2107, one for the DAC opamp and one for the headphone opamp? Just wanted to be sure, cause they seem kinda pricey. And also, that either Surface Mount of Through Hole doesn't really matter (so the cheaper one)? Thanks.

Yes, two but you don't want the thru hole or surface mount..u need the 8dip ones.

Wait, so wait you're telling me is that this won't fit?
 
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=296-19953-5-ND
 

 

[Trapper32]

Yes, its the dip8 version not a smd.   The exact ones I've used are the OPA2107AP
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So I would need to buy two OPA2107, one for the DAC opamp and one for the headphone opamp? Just wanted to be sure, cause they seem kinda pricey. And also, that either Surface Mount of Through Hole doesn't really matter (so the cheaper one)? Thanks.

Yes, two but you don't want the thru hole or surface mount..u need the 8dip ones.

Wait, so wait you're telling me is that this won't fit?
 
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=296-19953-5-ND
 

 

[Shevlock]

Spanky- Just wanted to say that I really appreciated your thread on the Maverick D1. It was largely based on your obvious enthusiasm that I purchased one myself and recently received delivery. I was wondering if you or anyone else had experienced this issue with the USB DAC as well.
 
Sometimes, the sound will just cut out while listening for an extended period of time. The only way that I can solve it is by reconnecting the USB cable. Any ideas on  how to solve this?
 
Thank for any help you can cast on the matter.