ROBSCIX
Headphoneus Supremus
- Joined
- Aug 25, 2005
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How does it sound?
Originally Posted by ROBSCIX /img/forum/go_quote.gif How does it sound? |
Originally Posted by 12Bass /img/forum/go_quote.gif If you're referring to THS4052, I made some comments here: http://www.head-fi.org/forums/f6/opa...ml#post6116238 |
Originally Posted by 12Bass /img/forum/go_quote.gif This is an AD8397 in my Gina24's headphone circuit, replacing SSM2135. A number of bypass capacitors were used, two 2200 µF on the rails (+/- 12V), two 22 µF and two 0.01 µF on pins 4 and 8, plus one 0.01 µF across. The circuit looks messy largely because it has been modified too many times and traces have lifted, plus the AD8397 required some circuit changes in order to make things stable/reliable. That and my careless soldering.... The Gina's headphone output with the AD8397 is clearer and more punchy sounding than with the original chip, which sounded sort of small and lifeless. Other mods are an OPA2211A in place of NJM2068 on the PCI card, along with shorted output capacitors, meaning that the output is DC coupled. This is my main source/headphone amp, used for driving my K702s. |
Originally Posted by 12Bass /img/forum/go_quote.gif Thanks ROBSCIX. Actually, I'm pretty happy with the AD8397.... can't think of another chip which would be better for this application (driving low impedance headphones). Also don't like the idea of adding more mechanical connections from a reliability/stability perspective. The intention behind this particular circuit was to fabricate a reliable, good sounding, headphone output, not to mess around with op amps.... I have other circuits for that.... |