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GUSTARD H10 High-current Discrete Class A output Stage Headphone Amplifier

Nov 19, 2015 at 2:51 PM Post #3,601 of 5,561
Op-amps take so long to reach Canada/be delivered.
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But I have yet to give up hope!
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Nov 19, 2015 at 2:55 PM Post #3,602 of 5,561
jackharm said:
  Op-amps take so long to reach Canada/be delivered.
frown.gif

 
But I have yet to give up hope!
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Ya I know. I am on day 16 of waiting, Burson told me to expect about 2 weeks....Canada Post is so ridiculously slow it's embarrassing.
 
Nov 19, 2015 at 3:16 PM Post #3,604 of 5,561
moriez said:
   
LoL! Those exact same things happen to *ahem*
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the best of us.
 
 
 
More sparkle in the treble could mean more quantity or do you think it's at the same level but just easier to hear?
 
Points 4 and 5 could exactly be what I'm looking for at the moment. It's greatly appreciated if you could listen and reaffirm that this really is the case to your ears.
What's other owners opinion in this specific area?
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jerick70 said:
  I think the reason there is more sparkle is because the treble is cleaner.  I'll listen closer once I swab the Burson's back in and let you know what I think.
 
That is the great thing about the H10, you can choose what sound you want.  This amp is so responsive to opamp swabbing it's mind blowing.  The stock opamps will give you the most laid back sound out of the bunch.  Then the AD797/AD823.    
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I put my Bursons back in.  Yes, cleaner treble is exactly why the treble sparkles more.  Also, it feels like the music is reproduced like as it was meant to be heard. 
 
Nov 19, 2015 at 8:46 PM Post #3,610 of 5,561
swannie007 said:
Just installed the Burson V5S's a few hours ago and to say that I'm impressed is an understatement! The bass has definitely ramped up, but not so as to sound overdone or unnatural, just more present and very clean and tight. Kinda like mama went to the gym and tightened up her rear end. Nice and controlled.
The mid range is also cleaner but not sibilant. As it is at the moment, with about five hours of play, I am very happy. If it gets better with burn-in, that would just be a bonus. Not sure if I would install the dual op-amps as I think I am reaching a point of diminishing returns and would have a hard time justifying the expenditure against the small increment in performance. If I left this amp as it currently is, I would be happy for some time. Until, that is, Gustard makes a balanced amp with similar, or improved performance at a reasonable cost.
I will leave the amp on overnight playing music and have listen in the morning before work and see if I can detect an improvement in sound quality.
Thanks to the Captain for turning me on to this upgrade. Greetings and salutations to all SS Gustard swabbies from "The Bosun in The Bush".
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Boson Swannie! I always enjoy hearing from you and especially when I get confirmation of my own experiences. I'm glad to hear that I have steered you in the right direction for your musical enjoyment. The V5S do work very well with the 823's. You have probably 75% of the Burson goodness working for you right now. Down the road, when you get bored or get the upgrade itch, you can always go for the other 25%.

Did I read correctly that you are moving to the States soon? I don't want to lose the appellation - Boson in the Bush. It's just too good. You will have to reside in a city here that starts with a "B", like boson from the Bronx, or some such cool alliteration.
 
Nov 19, 2015 at 11:12 PM Post #3,613 of 5,561

 

 

WHAT YOU NEED​

 
 ​

TOOLS

  1. Screw bit set
  2. Long nose pliers or IC puller (not shown)
  3. Power Drill (not shown)
 

ITEMS

  1. Gustard H10
  2. The Op-amps you wish to swap with. (I will be using two single and two dual Burson Supreme Sound V5 op-amp's)
 

STEPS​

To Remove the Lid

 ​
  1. Unscrew the 4 top screws that hold the lid in place,
    1. There are two on the front end (one on each side), and two in the rear near the corners.
            * You may need to use a power drill to unscrew the screws as they are a bit tight.
  1. To lift the lid off, on the side of the Gustard H10 are ridges. Use your nails to grip and slowly lift up to take the lid off.
​
Please note in the picture I redundantly removed all 8 screws located on the sides and rear of the H10. Only the top four screws are needed to be removed to take off the lid.​

To Swap the Op-Amps

You can choose to swap up to two pairs of op-amps; two dual op-amps located along the rear end of the Gustard H10 (near the inputs) and/or two single op-amps located along the side of the H10.
  1. Get your long nose pliers or IC puller and gently grip the sides of the op-amp.
​
 
  1. Once you are sure you have a good grip you can start to slowly wiggle and pull up. The op-amp should pop out leaving you with an empty socket. Repeat this process for the other op-amps.
​
 
  1. Before swapping in your newly acquired Burson V5's, make sure you know what goes where. The Burson V5-OPA-D (Dual op-amps) go in the rear, while the V5-OPA-S (Single op-amps) go along the side.
  2. Align the half-moon indentation that is located along the opposite side of the logo on the Burson V5's with the indentation in the H10 socket (sorry for the reversed picture).
​
 
 ​
  1. Make sure the pins are aligned with the socket and gently push down until it 'snaps' in. Repeat this for the remaining op-amps.
 
Now quickly power it up and ensure that everything is running as it should, remember to put the lid back on, and enjoy your V5'd H10!
Now for some random shots:
 

 

 
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