Mod your Beresford 7520

[Robscix]

Yes, that is what I figured, I would just unsolder the leg instead of clipping it then I can reverse the mod if need be.
To note, I also seen the DIL socket pic and thought that was a great idea for reversing the mod or trying tou other types in this circuit position. Great stuff.

[RoboCopper]

Hi,
While I am waiting for my LM4562NA I had some spares AD8066 which is not compatible for Beresford unless you have SOIC adapter. I got some adapter for AD8066 chip and after hard work with the solder I do like the sound which is coming out of chip.
Open, spacious, organic, plenty of highs, warm, although maybe I would not suggested to open systems, there is slight hiss or hum.
That is the reason I would like to purchase factory made AD8066 soldered to this adapter which is compatible to Beresford.
Anybody knows the online shop which sell that?
On ebay there is none.
Thank you.

[RoboCopper]

Hi,
In the last month I ordered LM4562NA from ebay.
But the item was not working properly, there was a sound distortion in treble especially when listening vocal classical female recordings.
Luckily, I got refund from seller.
Few questions:
1. Shall I mention the name of that seller where I got this half working chip?
2. I am looking to buy LM4562NA from ebay but from seller which definitely sells stock which should work.
Can somebody check this link and suggest me reputable seller?
http://shop.ebay.co.uk/i.html?LH_Pre...=p3286.c0.m283

To me the best could be: this one ?
As the other chips which letter start with JR did not work properly.
Should it start with ER like others?
Can somebody suggest me which one I should go for?
I prefer to purchase on ebay, but any other reputable place on the net is fine.

Thank you

Rob

[Maximum]

I got some of my chips from farnell. Free delivery, and you can be more sure you aren't buying a fake. LM4562NA chips should be under 5 quid each.

[Butuz]

Hi Guys. Please help me avoid having to read 150 pages!!!!

My 7520 runs standard supplied PSU. What is the best upgraded PSU??? Can be shop bought or DIY.

Thanks

Butuz

[Codifus]

Hi,
In the last month I ordered LM4562NA from ebay.
But the item was not working properly, there was a sound distortion in treble especially when listening vocal classical female recordings.
Luckily, I got refund from seller.
Few questions:
1. Shall I mention the name of that seller where I got this half working chip?
2. I am looking to buy LM4562NA from ebay but from seller which definitely sells stock which should work.
Can somebody check this link and suggest me reputable seller?
http://shop.ebay.co.uk/i.html?LH_Pre...=p3286.c0.m283

To me the best could be: this one ?
As the other chips which letter start with JR did not work properly.
Should it start with ER like others?
Can somebody suggest me which one I should go for?
I prefer to purchase on ebay, but any other reputable place on the net is fine.

Thank you

Rob

I bought my LM4562NAs and OPA2132 from digi key in the US;

http://search.digikey.com/scripts/Dk...62NA&x=28&y=17

Be sure to click the change country button on the very top right of the website.

[StanleyB]

I have added the Caiman power supply as an accessory on my website for those who have modified their TC-7520 and want to take advantage of the extra benefits the Caiman power supply offers. After lengthy testing of the Caiman PSU with the TC-7520, my beta testers have reported no problems, but significant SQ improvements.
The Caiman power supply won't benefit the TC-7520 with NE5532 opamps that much. But with LM4562 and THS4032 (i.e the opamps I have tried), the result is definitely one of the best and cheapest upgrades you can try. The usual money back guarantee applies if you can't hear any difference.

[Butuz]

Fantastic cheers Stan. I got my 7520 second hand of this forum and it came supplied with several op amps for me to try including LM4562.

Butuz

[leo]

I have added the Caiman power supply as an accessory on my website for those who have modified their TC-7520 and want to take advantage of the extra benefits the Caiman power supply offers. After lengthy testing of the Caiman PSU with the TC-7520, my beta testers have reported no problems, but significant SQ improvements.
The Caiman power supply won't benefit the TC-7520 with NE5532 opamps that much. But with LM4562 and THS4032 (i.e the opamps I have tried), the result is definitely one of the best and cheapest upgrades you can try. The usual money back guarantee applies if you can't hear any difference.

Agreed! it improved both line outs and also the headphone output for me, you'd have to spend much more in time and expense to better the improvement it brings

[leo]

Hi,
While I am waiting for my LM4562NA I had some spares AD8066 which is not compatible for Beresford unless you have SOIC adapter. I got some adapter for AD8066 chip and after hard work with the solder I do like the sound which is coming out of chip.
Open, spacious, organic, plenty of highs, warm, although maybe I would not suggested to open systems, there is slight hiss or hum.
That is the reason I would like to purchase factory made AD8066 soldered to this adapter which is compatible to Beresford.
Anybody knows the online shop which sell that?
On ebay there is none.
Thank you.

Be careful with the AD8066 used in this dac, I found it quite touchy and measured some stability issues , it sometimes behaved and sometimes it didn't.
High level hiss and hum could be the sign of it going unstable