[PinkFloyd]

http://freespace.virgin.net/rock.grotto/B-tech.htm

I've replaced the caps, resistors and op amp for under £10 and this baby sounds better than a Creek OBH-11 costing almost £100 more. (No, I'm not joking)

I'm not convinced that the OPA2134 sounds better than the NE5532 however. The NE5532 sounded a lot smoother... it's early days but my initial impression of the OPA2134 is that it's a downgrade over the 5532 in this particular circuit.

Does anyone know if an OP AMP needs time to "burn in"? If so, I may be slightly hasty in discounting it considering it's only been soldered in 3 hours ago!

Even with this OP AMP I find the sound comparable to the Creek OBH-11 and can strongly recommend it if you are looking for a good sounding amp at a reasonable price. Throw £8 worth of caps and resistors (I wouldn't bother replacing the 5532 OPA) into the equation and you really do have a giant killer.

Pinkie

Give the page time to load and the tweaked amp is at the bottom of the page.

 

[mekanoplastik]

excelent idea...

Im sure the expression in your face when you first listened the modded version was something like this ->

can you bypass the tone control and the small headphone jack? that may help even more....



m.

 

[PinkFloyd]

Quote:

Originally posted by mekanoplastik excelent idea... Im sure the expression in your face when you first listened the modded version was something like this -> can you bypass the tone control and the small headphone jack? that may help even more.... m.

I'm working on it as I type this. As it stands though I can live with the tone conrol and 3.5mm jack as the amp sounds so goooooood!

When I bought the £29 B-Tech I thought

after listening to it I thought

it's got potential. After opening it up I the

had taken over my soul.

After completing the tweak I feel like

Great sound for the pound.

Pinkie

 

[Mcrmouse30]

I am impressed! I want one but don't know where to get the amp in the U.S.

 

[PinkFloyd]

Quote:

Originally posted by Mcrmouse30 I am impressed! I want one but don't know where to get the amp in the U.S.

http://www.btech-usa.com/ $79 from them!

 

[00940]

how easy is it to mod this amp ? Could it be a good start to begin with DIY ? I'll be back in Europe by June and I'll have plenty of free time before september.

 

[Mcrmouse30]

Quote:

Originally posted by PinkFloyd http://www.btech-usa.com/ $79 from them!

Ouch.

. Thanks for the link btw.

 

[Trawlerman]

I think I saw this on the website for Superfi http://www.superfi.co.uk

Can't check at the moment though as their site is down for maintenance.




Sound As Ever

 

[PinkFloyd]

Quote:

Originally posted by Trawlerman I think I saw this on the website for Superfi http://www.superfi.co.uk Can't check at the moment though as their site is down for maintenance. Sound As Ever

Richer sounds website £29 http://www.richersounds.com/ under "accessories / miscellaneous"