rawhit
100+ Head-Fier
- Joined
- Jan 4, 2002
- Posts
- 324
- Likes
- 21
Hello all,
I have been going through the posts here and headwize for some time to decide upon a DIY amp for my Grado SR325 and SR80 phones. Must say that there are some very knowlegeable ppl out here.
I have a few constraints for the amp i want to build
-have never built an amp before so I dont want to take up something very complex.
-My budget is around 120 USD for a battery driven amp as I cant spend more than this now.
-I'm not looking for portable amp and size is not a big concern.
-The amp should be able to run on 2 9 volt batteries.
It would be great if somebody could clarify my following doubts keeping the above constraints in mind :
1) Can I build a an amp within my budget which can match some good sounding commercial amps like Corda HA-1, Creek OBH11 SE and Grado RA-1?
2) Was thinking of building either CHA-47 or Corda amp with high quality parts. Which one should I go for? Though I have only Grados now later I might buy some high impedence cans also. So I want to amp to be versatile.
3) most common question. Which OpAmp ???. I know that opa2134 and buf64 (CHA47)combinition is recommended for newbies as these are easy to deal with. But I wanted to use higher quality parts since at least for now I want it to be my only amp (i hope i dont get sucked into this DIY stuff
).
The epamps I have read about here (but no idea about which to use) are opa2134, AD823, AD845, LM6171 (corda), Opa 627 (headroom). Which opamp should i choose?
5) How much do these Opamps cost?
6) My location makes it tough to get any of these opamps. Could not even find opa2134. Are there any sites which would ship these components internationally for a reasonable price?
thanx for you help
RawHit
I have been going through the posts here and headwize for some time to decide upon a DIY amp for my Grado SR325 and SR80 phones. Must say that there are some very knowlegeable ppl out here.
I have a few constraints for the amp i want to build
-have never built an amp before so I dont want to take up something very complex.
-My budget is around 120 USD for a battery driven amp as I cant spend more than this now.
-I'm not looking for portable amp and size is not a big concern.
-The amp should be able to run on 2 9 volt batteries.
It would be great if somebody could clarify my following doubts keeping the above constraints in mind :
1) Can I build a an amp within my budget which can match some good sounding commercial amps like Corda HA-1, Creek OBH11 SE and Grado RA-1?
2) Was thinking of building either CHA-47 or Corda amp with high quality parts. Which one should I go for? Though I have only Grados now later I might buy some high impedence cans also. So I want to amp to be versatile.
3) most common question. Which OpAmp ???. I know that opa2134 and buf64 (CHA47)combinition is recommended for newbies as these are easy to deal with. But I wanted to use higher quality parts since at least for now I want it to be my only amp (i hope i dont get sucked into this DIY stuff
The epamps I have read about here (but no idea about which to use) are opa2134, AD823, AD845, LM6171 (corda), Opa 627 (headroom). Which opamp should i choose?
5) How much do these Opamps cost?
6) My location makes it tough to get any of these opamps. Could not even find opa2134. Are there any sites which would ship these components internationally for a reasonable price?
thanx for you help
RawHit