Mod your Beresford 7520

[The Vinyl Adventure]

blimey,
if i were in your shoes i would offer uprgade packages to people. a little bubble wraped package containing a couple of opamps and various other electronic whosiwotsits with a small 'how-to'

btw did you get back the other dac?
and any news on thiat input duplicator thing?

[The Vinyl Adventure]

right, so i just hopped on this opamp upgrade parade
i was very happy with the sound from the standard ones but as people keep saying there are alternatives that areso much better i thouhgt id give it a bash
i have put in these 4562s
there is more bass and they seem a bit more grainy, is this normal, concidering they have only just gone in, or am i just hearing something thats not there through worry that i have broken it?

[kalozois100]

Already 25 pages on modding the tc-7520!!! Congratulations Stan!

[StanleyB]

right, so i just hopped on this opamp upgrade parade
i was very happy with the sound from the standard ones but as people keep saying there are alternatives that areso much better i thouhgt id give it a bash
i have put in these 4562s
there is more bass and they seem a bit more grainy, is this normal, concidering they have only just gone in, or am i just hearing something thats not there through worry that i have broken it?

Probably just needs burning in.

[sponge]

But there is more. I am already experimenting with other mod possibilities that would be practical and relatively easy for the average electronic hobbyist to perform.

STan

How about a quick release latch on the case lid? - These 4 screws are getting to me...

[The Vinyl Adventure]

yeah, it seems to be a bit better now, in fact it did seem to calm down pretty quick! i briefly dropped the other opamps back in and the grain was still there so i think i was just the track i was using and me listening a bit to hard i also am fairly certian in hindsight that it is coming from the amp
these new ones now just seem to sound a little bit more open and more realistic i guess, with a bit more depth yet control to the bass. does that sound about what i should expect?

[kalozois100]

How about a quick release latch on the case lid? - These 4 screws are getting to me...

I left out the screws and wrapped around the casing with electrical tape when i was modding the tc-7510. it keep the case in place just as well as screws and allowed fast access. when i finally finished the all mods i closed all with screws. just remember to keep screws in a safe place for later on...

[Covenant]

After living with the 4562 op-amps for a week or so I have decided that the bass is a bit heavy or one note-ish in my system. I must stress this is subtle and dependant on the type of music being played. Its probably due to using floor standing speakers in a small room. With standmounts these op-amps may be perfect.
Nevertheless I will be thinking of swapping them for something with better control of the lower frequencies.

[trailer]

After living with the 4562 op-amps for a week or so I have decided that the bass is a bit heavy or one note-ish in my system. I must stress this is subtle and dependant on the type of music being played. Its probably due to using floor standing speakers in a small room. With standmounts these op-amps may be perfect.
Nevertheless I will be thinking of swapping them for something with better control of the lower frequencies.

I like a lot of bass and loved the 4562's and the 49720's.

The 4032's control the bass MUCH better.

[mwahahaha]

I like a lot of bass and loved the 4562's and the 49720's.

The 4032's control the bass MUCH better.

Think I might give the 4032's a go now that we seem to have found the eBay supplier that will do all the prep work. I have found the 49720's just take a bit of the feeling out of the sound - this could be because the bass is a little loose and is overshadowing the uppers and the mid's. Some albums/tracks though sound much better with the 49720's - just depends on the recording/music genre.