nikongod
DIY-ku
- Joined
- Jan 24, 2005
- Posts
- 8,882
- Likes
- 130
I would say same or slightly higher cost.
If you wire the boards up differently to take better advantage of CMRR the cost is basically the same. I should note that I havn't tried with any of the popular amps (B22, M3) so it may not be possible without causing instabilities.
On the more expensive front: Transformers make all of this this very easy. I wish more people would use input transformers. For what people spend on 4-channel builds a pair of input transformers would barely make a dent in the wallet. They are very "not" measurements first, but have so many nice things going for them. ground-loop proofing is pretty slick IMO.
If you wire the boards up differently to take better advantage of CMRR the cost is basically the same. I should note that I havn't tried with any of the popular amps (B22, M3) so it may not be possible without causing instabilities.
On the more expensive front: Transformers make all of this this very easy. I wish more people would use input transformers. For what people spend on 4-channel builds a pair of input transformers would barely make a dent in the wallet. They are very "not" measurements first, but have so many nice things going for them. ground-loop proofing is pretty slick IMO.